Supply, testing, delivery and off-loading of power line carrier (plc) equipment with environmental management requirements

No eligibility criteria specified

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The tender is for the supply, testing, delivery, and off-loading of Power Line Carrier (PLC) equipment. The scope of work is not detailed in the provided document. Bidders must select the applicable category on the returnables template (Category 3 is indicated as applicable).

Returnable documents must be completed, signed, and submitted with the quotation. The tender returnables template (List of Tender Returnables, Cat 3, Rev 7) must be used: select the applicable category on the Cover tab, complete the Returnables tab, save as PDF, and sign. The template must be submitted as part of the bid.

Quality evaluation uses a weighted scorecard with five sections: Section A (Quality Management System, weight 0.25), Section B (Evidence of QMS in operation, weight 0.25), Section C (Contract Quality Plan, weight 0.2), Section D (Quality Control Plan, weight 0.2), and Section E (User-defined additional requirements, weight 0.1). For Section A, bidders may choose Option 1 (valid ISO 9001 certification by an accredited body) or Option 2 (evidence of QMS in operation). Each section requires specific documents; scores are calculated as a percentage of the maximum score multiplied by the weight. Bidders must meet the applicable quality requirements to be evaluated.

The tender is for the supply, testing, delivery, and off-loading of Power Line Carrier (PLC) equipment. The scope of work is not detailed in the provided document. Bidders must select the applicable category on the returnables template (Category 3 is indicated as applicable).

No specific compliance requirements (e.g., CSD registration, tax clearance, B-BBEE level, CIDB grading) are stated in the provided document. The quality evaluation requires either a valid ISO 9001 certificate (Option 1) or evidence of an implemented QMS (Option 2) as per the tender quality requirements.

The tender is for the manufacture, supply, testing, delivery and offloading of estimated quantities of Power Line Carrier (PLC) equipment on an 'as and when required' basis. The equipment is used on Eskom transmission lines (275kV and 400kV) and includes carrier cabinets, PLC units, combiners, filters, modems, and accessories. Quantities are estimated per line and for future projects.

Closing date: 2026-09-30 at 10:00 (local time). No briefing or site visit is mentioned.

Returnable documents: the completed PS5 price schedule (prices inclusive of VAT), the Cover pricing information sheet (total price excluding and including VAT, signed by an authorised signatory), the Transport & Offloading Matrix with rates, and the CPA Formula sheet with each formula totalling 100%. All documents must be completed, signed, and submitted by the closing time.

No eligibility criteria or evaluation scoring split is stated in the document. The tender is an open request for bid; evaluation will likely consider price and CPA formula compliance, but no specific weighting or minimum thresholds are provided.

Scope: manufacture, supply, testing, delivery and offloading of estimated quantities of Power Line Carrier (PLC) equipment on an 'as and when required' basis. The equipment list includes carrier cabinets, combiners, PLC units (various power and frequency configurations), upgrades, modules, subracks, modems, power supplies, and accessories, each with SAP item numbers. Quantities are estimated per line (e.g., 275kV and 400kV lines) and for future projects. The tenderer must provide pricing per unit for each item.

Pricing must be submitted in the PS5 price schedule, with prices inclusive of VAT. The cover sheet requires total price excluding VAT and including VAT, and the rand value in words. For goods supplied from outside RSA, the schedule requires FOB price, freight, marine insurance, import costs, and transport to site. For goods from inside RSA, FOR price is required. The CPA Formula sheet must be completed unless prices are fixed for the contract duration; each formula must total 100% with a minimum 15% fixed portion, and indices must be from recognised independent sources (e.g., SEIFSA, StatsSA). Transport and offloading rates must be provided in the Transport & Offloading Matrix, including rates for various vehicles and labour grades, and accommodation costs for overnight trips. Bidders must note National Treasury instruction 03 of 2017.

No specific compliance requirements (e.g., CSD, tax, B-BBEE) are stated in the document.

Power Line Carrier systems are used in Eskom to facilitate telecommunications which are used for

teleprotection, protection and telecontrol. This ensures stability in the power system.

The specification is required to detail the requirements for the correct operation of the power line carrier (PLC)

equipment and to ensure the power line carrier equipment facilitates the telecommunications medium used by

the terminal equipment at substations. The specification also ensures the PLC equipment interfaces correctly

to the protection, telecontrol and telecommunications equipment.

2. Supporting clauses

2.1 Scope

2.1.1 Purpose

The purpose of this document is to provide specific characteristics of Power Line Carrier (PLC) systems used

for communication on power lines between terminal stations, as required by Eskom. The communication

services supported and detailed in this specification are: speech, data, telesignalling and teleprotection.

2.1.2 Applicability

This specification is applicable to all those in Eskom involved in the application and engineering of power line

carriers on HV and EHV power lines.

This document shall apply throughout Eskom Holdings Limited Divisions.

2.2 Normative/informative references

Parties using this document shall apply the most recent edition of the documents listed in the following

paragraphs.

2.2.1 Normative

[1] ISO 9001, Quality Management Systems.

[2] TST41-634, Drawing Office Standard.

[3] 240-75975613, Standard for the installation of Power Telecommunications Equipment.

[4] 240-75655504, Eskom Specification: Corrosion protection standard for new indoor and outdoor

Eskom equipment, components, materials and structures manufactured from steel standard.

[5] 240-57649048: Eskom Standard: Fault Monitoring Equipment for Power Systems Standard.

[6] 240-60725641: Specification for Standard (19 inch) Equipment Cabinets.

[7] IEC 60495: Single-sideband power line carrier terminals

[8] QM-58: Eskom Standard: Supplier Contract Quality Requirements Specification.

[9] IEC 60481: Coupling devices for power line carrier systems

[10] IEC 60721-3-3: Classification of environmental Conditions. - Part 3: Classification of groups of

environmental parameters and their severity. - Section 3: Stationary use at weather protected

locations

[11] IEC 60834-1: Performance and testing of teleprotection equipment of power systems

[12] SANS / IEC 61000-4-2: Electromagnetic compatibility (EMC) – Part 4 – Testing and measurement

techniques – Section 2: Electrostatic discharge immunity test.

[13] SANS / IEC 61000-4-3: Electromagnetic compatibility (EMC) – Part 4: Testing and measurement

techniques – Section 3: Radiated, radio – frequency, electromagnetic field immunity test.

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SPECIFICATION FOR POWER LINE CARRIER & Unique Identifier: 240-106920490

Integrated teleprotection equipment

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[14] SANS / IEC 61000-4-4: Electromagnetic compatibility (EMC) – Part 4: Testing and measurement

techniques – Section 4: Electrical fast transient/burst immunity test.

[15] SANS / IEC 61000-4-5: Electromagnetic compatibility (EMC) - Part 4: Testing and measurement

techniques - Section 5: Surge immunity tests.

[16] SANS/IEC 61000-4-8: Electromagnetic Compatibility (EMC) – Part 4-8: Testing and measurement

techniques – Power frequency magnetic field immunity test.

[17] IEC 61000-4-18: Electromagnetic Compatibility (EMC) – Part 4-18: Testing and measurement

techniques – Damped oscillatory wave immunity test.

[18] IEC 60255-5: Insulation test for electrical relays.

[19] IEC 60255-25: Electrical Relays – Part 25: Electromagnetic emission tests for measuring relays and

protection equipment

[20] IEC 61850: Communication Networks and Systems in Substations.

[21] ITU-T G703: Physical/Electrical Characteristics of Hierarchical digital interfaces

[22] ITU-T X.21: Interface between DTE and DCE Equipment for Synchronous Operation on Public Data

Networks

[23] 240-42066934: IEC 61850 Protocol Implementation Document for the purposes of Substation

Automation.

[24] 240-68235024: Eskom IEC 61850 Station Bus Interoperability Test Standard.

[25] 240-68107841: Eskom IEC61850 Standard Requirements for PICS, PIXIT and TICS.

[26] 240-55410927: Eskom’s cyber security standard.

[27] SANS 201729:2005 / ETSI ES 201729: Public Switched Telephone Network (PSTN); 2-wire analogue

voice band switched interfaces; Timed break recall (register recall); Specific requirements for

terminals.

[28] SANS 336/ ETSI TBR 21: Terminal Equipment (TE); Attachment requirements for pan-European

approval for connection to the analogue Public Switched Telephone Networks (PSTNs) of TE

(excluding TE supporting the voice telephony service) in which network addressing, if provided, is by

means of Dual Tone Multi Frequency (DTMF) signalling.

[29] TIA/EIA/IS-968: Telecommunications telephone terminal equipment technical requirements for

connection of terminal equipment to the telephone network

[30] ITU-T Q.552: Transmission characteristics at 2-wire analogue interfaces of digital exchanges

[31] ETSI ES 201 970: Access and Terminals (AT); Public Switched Telephone Network (PSTN);

Harmonized specification of physical and electrical characteristics at a 2-wire analogue presented

Network Termination Point (NTP)

2.2.2 Informative

[32] ITU-T G.232 : Publication Recommendation G.232

[33] ITU-T Q23: Technical features of push-button telephone sets

[34] ITU-T G.712 : Publication Recommendation G.712

[35] ITU-T G162: Publication Recommendation G.162

[36] ITU-T G823: The control of Jitter and Wander Within Digital Networks which are based on the 2048

kBit/s hierarchy

[37] ITU-T G.956: Digital line systems based on the 2048 kBit/s hierarchy on optical fibre cables

[38] ITU-T G652: Characteristics of a single mode optical fibre cable

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SPECIFICATION FOR POWER LINE CARRIER & Unique Identifier: 240-106920490

Integrated teleprotection equipment

Revision: 3

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[39] IEC60870-2-1: Telecontrol equipment and systems. Part 2: Operating conditions – Section 1 Power

supply and electromagnetic compatibility.

[40] SANS 1091: National colour standards for paint

2.3 Definitions

2.3.1 General

None

2.3.2 Disclosure classification

Controlled disclosure: controlled disclosure to external parties (either enforced by law, or discretionary).

2.4 Abbreviations

Abbreviation Description

CAS Channel Associated Signalling

CB Central Battery

CC Coupling Capacitor

CVT Capacitor Voltage Transformer

DTMF Dual-tone multi-frequency

E&M Ear & Mouth

EHV Extra High Voltage

FXO Foreign Exchange Office

FXS Foreign Exchange Subscriber

HF High frequency

HMI Human Machine Interface

HV High Voltage

IED Intelligent Electronic Device

Ips Impulses per second

LME Line Matching Equipment

NTCSA National Transmission Company of South Africa

PEP Peak Envelope Power

PLC Power Line Carrier

PSTN Public Switched Telephone Network

QA Quality Assurance

Rx Receive

SH Symmetrical Hybrid

SSB Single side band

TE Terminal Equipment

TMS Transmission Measurement Set

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Integrated teleprotection equipment

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Abbreviation Description

Tx Transmit

UHF Ultra High Frequency

2.5 Roles and responsibilities

Not applicable.

2.6 Process for monitoring

Not applicable.

2.7 Related/supporting documents

This document supersedes TSP41-65.

3. General Requirements

3.1 Environmental conditions

The equipment shall operate as specified under the following ambient conditions:

a) Indoors: Ambient conditions: IEC 60721-3-3, Class 3K5 where high air temperatures and low air

temperatures are amended as specified in IEC60495.

b) Altitude: 0m to 2000m

c) Temperature: Maximum : +55°C

Minimum : 0°C

d) Humidity: 95 % below : +35°C

75 % above : +35°C

e) Barometric pressure: 70kP to 106kP

f) Lightning: Extremely severe

3.2 Power line carrier equipment

3.2.1 Carrier frequency circuits

3.2.1.1 Channel requirements

a) Each power line carrier link shall provide a full duplex communication channel between two terminals

of a high voltage transmission line. The PLCs shall accommodate with legacy requirements meeting

the International Standard IEC 60495. Each carrier terminal shall include a transmitter and receiver

operating on the single-sideband principle with suppressed carrier, suitable for contiguous channel

operation.

b) All the main functions of the equipment shall be implemented in the Digital Signal Processing

technology (voice/data services, teleprotection parameters, bandwidth selection, channel

characteristics, etc).

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c) Full duplex operation of a standard single channel PLC shall be possible in a minimum 4 kHz

bandwidth (two kHz for each direction of transmission), within the carrier frequency range 40 kHz to

500 kHz. The duplex channel frequency allocations will be made in accordance with the frequency

allocation chart included in Annexure E of this specification. Eskom prefers contiguous transmit (Tx)

and receive (Rx) channel frequency bands and not a superimposed Tx and Rx channel frequency

bands.

d) Eskom prefers a system which can achieve the following basic configurations on a single common

platform:

1. Teleprotection only, 2 kHz bandwidth (per direction of transmission). Minimum of three totally

independent Teleprotection channels.

2. 4 kHz bandwidth (per direction of transmission) with the following functions: Teleprotection

(Minimum of four totally independent Teleprotection channels), capable of transmitting data

at up to 64 kBit/s (depend on S/N ratio).

3. 4 kHz bandwidth (per direction of transmission) Alternate multipurpose with the following

functions: Teleprotection (Minimum of four totally independent Teleprotection channels),

Speech limited to 2 kHz and data above speech.

4. 8 kHz and higher bandwidth (per direction of transmission), Alternate multipurpose with the

following functions: Teleprotection (Minimum of four totally independent Teleprotection

channels), flexible data and speech multiplexers.

3.2.1.2 Transmitter power requirements

a) The power rating shall be defined as the peak-envelope-power (PEP) available at the co-axial HF

input/output of the carrier, without exceeding the maximum permitted level of spurious emissions as

detailed in section 2.5 and figure 7 of IEC 60495.

b) The equipment shall have a range of units with a nominal carrier frequency output power, as defined

in 2.4.1 of IEC 60495, of a maximum of 50 dBm (100W) which can be configurable for lower power

outputs (e.g. 47 dBm (50W)).

3.2.1.3 Transmitter protection

The transmitter shall be capable of operating continuously without suffering damage into an open circuit or

short circuit, either by means of its basic design or by means of protective devices that reduce the transmitter

output power under these conditions. The protective system shall be self-resetting when the transmitter open

circuit or short circuit is removed. Protective systems that switch off the transmitter instantaneously under

mismatch conditions are not acceptable.

3.2.1.4 Transmitter loadings

a) The combination of signals applied to the transmitter shall not exceed the nominal power of the

transmitter.

b) The digital PLCs shall allow configuration of transmitter loadings (automatically calculated) for the

different PLC requirements as listed in section 3.2.1.1.

c) If the power amplifier is overdriving for a period of more than 60s, an alarm shall be raised.

3.2.2 Combination of transmitters and receivers

a) The transmitter output filters shall be designed to permit the operation of several transmitters on the

same high frequency cable, without the use of hybrids, with a minimum spacing of 8kHz between

transmitter and adjacent transmitter band edges. The 8 kHz minimum separation requirement relates

to a standard PLC using a 4 kHz bandwidth for each direction of operation.

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b) The supplier must specify the minimum separation requirement for the 2 kHz PLC. Attenuation of the

transmitted signal shall not exceed either 0.5dB for 1 transmitter or 1dB for 3 or more transmitters,

due to the loading effect of adjacent transmitters, when the 8 kHz spacing is applied.

c) Each carrier set shall include a high frequency hybrid to connect the transmitter and its associated

receiver to line. The hybrid shall be of unsymmetrical design, so as to introduce no more than 1dB

of attenuation in the direction transmitter to line. The hybrid circuit shall incorporate variable resistive

and reactive components in the balancing network. It shall be designed to cope with a varying line

impedance resistive component between 35 and 150 and a reactive component which could vary

between 75 capacitive to 75 inductive. With this arrangement, trans-hybrid attenuation of up to

56dB shall be possible. It is preferred for the RF hybrid to be adjustable from the front (faceplate).

d) The two-wire HF input circuit to the hybrid shall be protected. Eskom prefers the protection of the

hybrid with a 350V, 1s, gas discharge tube. If the supplier uses an alternative method, the supplier

to provide the details of this method of protecting the hybrid and PLC.

e) The carrier HF input/output shall have nominal impedance of 75 unbalanced.

f) The return loss in the transmit and receive bands shall be  10dB.

3.2.3 PLC Frequency requirements

a) The virtual carrier frequency (HF) shall not differ from its nominal value by more than  20Hz on

systems using suppressed carrier.

b) In a pair of PLC terminals, the frequency difference between a voice frequency signal applied to the

transmit end and that at the receive end shall not exceed 1Hz after 1 year of operation.

c) Carrier Frequency Duplex Channel Allocations:

1. Carrier Frequency channel allocations will be made in accordance with the chart given in

Annexure E of the specification. If a 2kHz, 8 kHz, 16kHz bandwidth PLC are used, then the

channel allocations will be adjusted accordingly.

2. For ordering purposes Eskom always assumes that the carrier transmits a residual carrier

at the lower band edge of the channel, and the information is transmitted by the upper

sideband. The frequency of the residual carrier is used in the order document. This

convention is used irrespective of the actual residual carrier or sideband arrangement e.g.

The carrier operating in the following 4 kHz bands:-

Table 1: Example of PLC frequency labelling convention

2kHz PLC 4kHz PLC 8kHz PLC 16kHz PLC

Tx 104 to 106 kHz Tx 104 to 108 kHz Tx 104 to 112 kHz Tx 104 to 120 kHz

Rx 106 to 108kHz Rx 108 to 112kHz Rx 112 to 120kHz Rx 120 to 136kHz

Will have its frequencies specified as follows:-

Tx 104 kHz Tx 104 kHz Tx 104 kHz Tx 104 kHz

Rx 106 kHz Rx 108 kHz Rx 112 kHz Rx 120 kHz

3.2.4 Automatic gain control and receiver sensitivity

a) A HF level variation of + 10/-30dB about the nominal receive level, within the regulation range, shall

not change the voice frequency receive levels of speech or signals by more than  1 dB.

b) The maximum receiver sensitivity for speech signals, with the automatic gain control (AGC) at the

end of its regulation range, shall not be less than the minimum signal of –20dBm measured at the

HF input to the carrier.

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c) An alarm shall be provided to indicate when the carrier signal is outside the AGC control range.

d) In addition to the alarm required in 3.2.4.c), a signal level squelch circuit shall be provided to block

the speech and signalling outputs of the carrier when the AGC is outside its control range. The

teleprotection signal output shall not be affected by this squelch circuit.

3.2.5 Receiver noise squelch circuit

a) Where squelch circuits operate on loss of signal only, due to the increase in gain afforded by the

AGC circuit, there is a definite risk, on noisy circuits, that the increased noise output will prevent the

AGC squelch circuit and associated alarm from operating. The receiver shall, therefore, include a

pure noise detector for the initiation of the noise squelch circuit. The sensitivity of the noise detector

shall be adjustable over the range –10 to –30dBmO (50Bd).

b) Besides the initiation of an alarm, a squelch circuit shall inhibit all received signals from entering the

voice frequency circuits. This is required to prevent the increased noise level from causing

maloperation of the squelch circuits in the teleprotection receivers and to avoid noise injection on

telesignalling channels arranged in tandem connection, when one of the carrier channels of the

tandem link fails.

c) The squelch circuit for the teleprotection circuits shall incorporate the pick-up and drop-off time

delays specified in 3.2.5d).

d) The S/N squelch circuit shall cut off all audio circuits, including the teleprotection channels. To

prevent the squelch circuit blocking the teleprotection under line fault conditions, the circuit shall have

a delay of 5s on pick-up and a delay of 2s delay on reset.

e) Alarm and squelch circuits shall be self-resetting. Lock-out systems are not acceptable.

3.2.6 Hybrid Balancing and Equaliser network

a) The carrier receiver of the PLCs that comprise of speech and data (4,8,16 kHz PLCs) shall include

a channel equaliser to equalise the non-linear amplitude variations of the transmission line. The

equaliser network shall be capable of accommodating a maximum of  10dB amplitude distortion

variation across the 4kHz basic carrier frequency bands (speech, telesignalling and pilot tone),

allowing for either a positive or negative amplitude slope at the band edges or in the centre of the

band, or a combination of both. It will be an advantage if the equaliser can equalise the phase

variations of the line and can accommodate up to 3ms group delay.

b) The equaliser is required to regulate all the received signals including pilot/signalling tone and

telesignalling channels.

c) The equaliser network shall not be used to equalise the basic internal amplitude distortion of the

terminal equipment.

d) The equaliser network shall be supplied complete with all components required to provide all

equaliser characteristics needed to fulfil the requirements of a).

e) The tuning of the hybrid whilst the PLC is energized and connected to either an artificial line or the

actual line shall be allowed.

3.2.7 Voice requirements

a) The voice circuits shall comply to the latest version of at least one of the standards below:

1. SANS 201729:2005 / ETSI ES 201729: Public Switched Telephone Network (PSTN); 2-wire

analogue voice band switched interfaces; Timed break recall (register recall); Specific

requirements for terminals

2. SANS 336/ ETSI TBR 21: Terminal Equipment (TE); Attachment requirements for pan-

European approval for connection to the analogue Public Switched Telephone Networks

(PSTNs) of TE (excluding TE supporting the voice telephony service) in which network

addressing, if provided, is by means of Dual Tone Multi Frequency (DTMF) signalling

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3. TIA/EIA/IS-968: Telecommunications telephone terminal equipment technical requirements

for connection of terminal equipment to the telephone network

4. ITU-T Q.552: Transmission characteristics at 2-wire analogue interfaces of digital

exchanges

5. ETSI ES 201 970: Access and Terminals (AT); Public Switched Telephone Network (PSTN);

Harmonized specification of physical and electrical characteristics at a 2-wire analogue

presented Network Termination Point (NTP)

b) The voice circuit/module shall have a FXS interface.

c) The voice circuit/module shall have a FXO interface. The FXO interface shall be able to connect to

the telecoms equipment as displayed in Annex A.

d) The mechanical design of the interface unit shall be such that it forms part of the standard equipment

permanently housed in the carrier bay.

e) To limit spares holding, it is preferred that the required interfaces in point 3.2.7b) and 3.27c) above

are accommodated on a single universal interface that is software programmable.

3.2.8 Point-to-point communication (service telephone)

a) In addition to the speech channel equipment specified, each carrier set shall include facilities for

establishing point-to-point communication between the two ends of the transmission lines where the

FXS port could be used.

b) Point-to-point, service engineer calling shall either be initiated by using a handset and an internally

mounted push button/buzzer configuration or standard telephone sets using the internal telephone

set “buzzer”.

c) The service engineer’s plug-in facility shall be so arranged that customer calls have priority.

3.2.9 Interconnection and Repeater Operations

a) Interconnection of PLC terminals:

All carriers shall preferably be fitted with (integrated software programmable, digital) filters in the transmit and

receive legs of both the speech and super audio paths to support VF transit applications. These filters are

required, when transit communication necessitates blocking of the signalling, speech, pilot tone and/or

protection guard tones when the carriers are connected in a back-to-back configuration between two terminals

at the same point.

b) Carrier repeater operation

In certain circumstances, Eskom may wish to operate the carriers on a wideband back-to-back configuration.

With this arrangement, it shall be possible to connect the carrier audio output on a wideband basis through to

the wideband audio input of the following carrier link, so that all signals, including speech, telesignalling,

protection, telephone signalling and pilot tones are retransmitted by the following carrier terminal. The above

arrangement is particularly desirable at carrier repeater stations to allow the transit connection of teleprotection

signals on an audio basis.

1. Amplitude response of back-to-back terminals with an audio bandwidth of 300Hz to 3800Hz. (refer

to Annexure B, Amplitude Distortion template).

2. Group delay response of back-to-back terminals with an audio bandwidth of 300Hz to 3800Hz. (refer

to Annexure B, Group Delay Distortion template).

3.2.10 Noise and interference

The noise and interference levels between carrier link transmitter and receiver shall be measured using the

line attenuations detailed below, when transmitting at the relative transmit levels specified in 3.2.1.4 with the

nominal speech and telesignalling receive levels . All PLC circuits shall operate reliably for S/N down to 25dB

for conventional operation and S/N of 30dB for full digital operation.

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SSB rating Total attenuation

10W 17 dB

20W 20 dB

40W 23 dB

80W 26 dB

100W 27 dB

3.2.10.1 Noise

a) In the speech band under idle channel conditions, noise shall be not greater than 60dBmOp (Sp).

b) In the telesignalling (super audio) band, noise shall be not greater than  52dBmO (50Bd), measured

in the complete telesignalling band.

3.2.10.2 Interference

a) The pilot, telephone signalling or guard tone interference shall not exceed the following limits when

measured at the following points:

1. Telesignalling output: -52dBmO (50Bd) when measured within the telesignalling bandwidth.

2. Speech output: -60dBmOp (Sp) measured in the speech bandwidth.

b) All the above noise and interference levels shall be measured with the compandors out of circuit (if

the PLC uses compandors).

3.2.11 Voltage withstand, electromagnetic compatibility and insulation resistance

{"name":null,"email":null,"phone":null,"department":".......................................................................................... 18","address":null}

B-BBEE Minimum Level: 3

Bidders must comply with the technical specification and all referenced standards. The document does not specify general eligibility criteria such as CSD registration or tax clearance. Bidders must complete the Statement of Compliance or Deviation (Section 6) and provide test certificates as required. The tender is issued by Eskom/NTCSA; no specific pre-qualification thresholds are stated in the provided content.

Power Line Carrier (PLC) systems are used for teleprotection, protection and telecontrol on HV and EHV power lines. The equipment must operate under the following ambient conditions:

• Indoors: IEC 60721-3-3, Class 3K5 with amendments as per IEC60495.
• Altitude: 0m to 2000m.
• Temperature: Maximum +55°C, Minimum 0°C.
• Humidity: 95% below +35°C, 75% above +35°C.
• Barometric pressure: 70kPa to 106kPa.
• Lightning: Extremely severe.

Carrier frequency circuits:

• Each PLC link shall provide a full duplex communication channel between two terminals of a HV transmission line, meeting IEC 60495.
• All main functions implemented in Digital Signal Processing technology.
• Full duplex operation in minimum 4 kHz bandwidth (2 kHz per direction), within carrier frequency range 40 kHz to 500 kHz.
• Eskom prefers contiguous Tx and Rx channel frequency bands.
• Preferred configurations on a single common platform:

1. Teleprotection only, 2 kHz bandwidth per direction, minimum three totally independent teleprotection channels.
2. 4 kHz bandwidth per direction with teleprotection (minimum four independent channels) and data up to 64 kBit/s (depending on S/N ratio).
3. 4 kHz bandwidth per direction alternate multipurpose with teleprotection (minimum four independent channels), speech limited to 2 kHz and data above speech.
4. 8 kHz and higher bandwidth per direction alternate multipurpose with teleprotection (minimum four independent channels), flexible data and speech multiplexers.

Transmitter power:

• Power rating defined as peak-envelope-power (PEP) at co-axial HF input/output, without exceeding spurious emission limits of IEC 60495.
• Nominal carrier output power maximum 50 dBm (100W), configurable for lower outputs (e.g. 47 dBm (50W)).

Transmitter protection:

• Transmitter shall operate continuously without damage into open or short circuit.

Digital converter/multiplexer:

• Seamless migration from digitised single side-band PLC to full digital PLC via converter/multiplexer unit.
• Migration to full digital possible on site without affecting frequency allocation or coupling arrangement.
• Modem robust, capable of reliable digital transmission up to 64 kbit/s on 4 kHz bandwidth, upgradable to increasing bandwidth.
• Speed adjustable in steps; automatic transmission speed adaptation (fallback/fallforward) preferably provided, enable/disable by choice.
• Aggregate can accommodate combination of speech and data signals of varying speeds.
• Data rate of multiplexer channels individually programmable.
• Interfaces: V11/RS232 (sync and async), V24/X21, RS422A, LAN (RJ45), electrically isolated.
• Ethernet (LAN) minimum 10 Mbps with auto negotiation, RJ45 electrically isolated; optional optical interface for 850 nm multimode (50/125 μm) and 1310 nm single mode (9/125 μm), preferred LC connector for multimode.
• Data rate programmable for 9600 bit/s and 19200 bit/s for asynchronous data and voice circuits.
• 2/4 wire operation with DTMF signalling, remote subscriber operation.
• Protection signalling not affected by converter/multiplexer.
• Digital PLC configuration can utilise full 4 kHz, 8 kHz or 16 kHz bandwidth for digital transmission.

Carrier combiner units (CCU) and Symmetrical hybrids (SH):

• CCU consists of symmetrical HF hybrids mounted within carrier cabinets.
• Minimum two power line carrier ratings: Type CX40/50 (40 or 50 Watts PEP) and Type CX80/100 (80 or 100 Watts PEP).

Teleprotection equipment:

• Teleprotection system integrated into carrier equipment, providing no less than three totally independent bi-directional channels.
• Suitable for permissive, blocking or direct transfer trip modes.
• Uses carrier pilot signal for guard under quiescent conditions; command signal within speech band.
• Teleprotection transmitter boost/exalt circuit linked to command circuit; when command transmitted, speech and data blocked so full SSB power available.
• Capable of operating with maximum sudden attenuation of 20dB caused by line fault.
• Single component failure cannot produce false command output; command output blocked and alarm given.
• Command output blocked after 1s if command signal present longer than 1s.
• Teleprotection receiver gives command output if command signal received within 100ms of guard disappearing; otherwise blocked and alarm given.
• Received signal monitored continuously; alarm if neither guard nor command present.
• Teleprotection transmitter output monitored continuously; alarm if output fails.
• Systems designed and equipped for at least three channel operation; each channel's interface galvanically separate and independent.

Management, alarms and test facilities:

• Service interface for management console (PC/laptop) for status, configuration, integration into management system.
• Password protection and terminal addressability.
• Logging of local and remote alarms, operational status, chronological register of events.
• Communication with remote PLC preferably via integrated service channel.
• All main functions programmable from service interface/HMI.
• Preferred HMI port: Ethernet (RJ45); multimode fibre optic port for IEC 61850 also for remote access; acceptable interface EIA-232.
• Software compatible with Microsoft Windows XP, Windows 7 or later, preferred 64-bit.
• Adaptors (e.g. USB to RS-232) specified and included as option on price schedule.
• Web interfaces must not require changing web interface parameters on PC.
• All HMI and enabling software provided as part of equipment; updates free for lifespan; firmware/HMI revisions backward compatible.
• Event and alarm logs exportable in Excel, PDF or similar.
• Management console features software-based measuring facility; graphical presentation; tuning and testing with generation of signals.
• All test points suitable for measurements with 75Ω or 600Ω impedance; adaptors/test cords supplied.
• PLC and related equipment use light emitting diodes for indications.

Cyber security:

• IEDs support implementation of 240-55410927, Eskom's cyber security standard.
• Role-based access in at least three levels: read-only; read access with selected application-specific settings; full read and write access.
• Levels (2) and (3) password protected.

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3.4.8 Voltage withstand, electromagnetic compatibility and insulation resistance

requirements ........................................................................................................................ 26

3.5 Housing of equipment, cabling, labelling and test equipment .......................................................... 26

3.5.1 Housing of equipment and cabling facilities ......................................................................... 26

3.5.2 Standard Cabinet Arrangement for Power Line Carriers ..................................................... 28

3.5.3 Equipment Labelling and Identification ................................................................................ 28

3.5.4 Cabinet wiring ...................................................................................................................... 29

3.5.5 Equipment design and testing facilities ................................................................................ 30

3.6 Drawings and instruction manuals ................................................................................................... 31

3.6.1 Drawings .............................................................................................................................. 31

3.6.2 Instruction manuals .............................................................................................................. 31

3.6.3 Tools, test equipment and spares ........................................................................................ 32

3.6.4 Quality assurance and system reliability .............................................................................. 33

4. Tests .......................................................................................................................................................... 33

4.1 Power line carrier equipment ........................................................................................................... 33

4.1.1 Routine Tests ....................................................................................................................... 33

4.1.2 Type Tests ........................................................................................................................... 34

4.2 Carrier Combiner Units with Symmetrical Hybrid (SH) .................................................................... 35

4.2.1 Routine Tests ....................................................................................................................... 35

4.2.2 Type Tests ........................................................................................................................... 35

4.3 Integrated Teleprotection Equipment ............................................................................................... 36

4.3.1 Routine Tests ....................................................................................................................... 36

4.3.2 Type Tests ........................................................................................................................... 36

4.4 Converter/Multiplexer Equipment ..................................................................................................... 37

4.4.1 Routine Tests ....................................................................................................................... 37

4.4.2 Type Tests ........................................................................................................................... 38

4.5 Test certificates and witnessing of tests........................................................................................... 38

4.5.1 Test certificates .................................................................................................................... 38

4.5.2 Witnessing of Tests .............................................................................................................. 38

5. Delivery, Packaging and Labelling ............................................................................................................ 39

5.1 Delivery ............................................................................................................................................ 39

5.2 Packaging ......................................................................................................................................... 39

5.3 Labelling ........................................................................................................................................... 39

6. Statement of Compliance or Deviation ...................................................................................................... 39

7. Authorization .............................................................................................................................................. 40

8. Revisions ................................................................................................................................................... 40

9. Development team .................................................................................................................................... 40

10. Acknowledgements ................................................................................................................................... 40

Annex A – Voice (Speech) Configurations ....................................................................................................... 41

Annex B – Group Delay and Attenuation Distortion Limits ............................................................................... 42

Annex C – Teleprotection ................................................................................................................................. 44

Annex D – Type Test Circuits ........................................................................................................................... 45

Annex E – Frequency Allocations ..................................................................................................................... 46

Annex F –Cabinet, wiring and CCU Diagrams ................................................................................................ 47

Annex G – Technical Schedules A&B .............................................................................................................. 55

paragraphs.

2.2.1 Normative

[1] ISO 9001, Quality Management Systems.

[2] TST41-634, Drawing Office Standard.

[3] 240-75975613, Standard for the installation of Power Telecommunications Equipment.

[4] 240-75655504, Eskom Specification: Corrosion protection standard for new indoor and outdoor

[5] 240-57649048: Eskom Standard: Fault Monitoring Equipment for Power Systems Standard.

[6] 240-60725641: Specification for Standard (19 inch) Equipment Cabinets.

[7] IEC 60495: Single-sideband power line carrier terminals

[8] QM-58: Eskom Standard: Supplier Contract Quality Requirements Specification.

[9] IEC 60481: Coupling devices for power line carrier systems

[10] IEC 60721-3-3: Classification of environmental Conditions. - Part 3: Classification of groups of

environmental parameters and their severity. - Section 3: Stationary use at weather protected

locations

[11] IEC 60834-1: Performance and testing of teleprotection equipment of power systems

[12] SANS / IEC 61000-4-2: Electromagnetic compatibility (EMC) – Part 4 – Testing and measurement

techniques – Section 2: Electrostatic discharge immunity test.

[13] SANS / IEC 61000-4-3: Electromagnetic compatibility (EMC) – Part 4: Testing and measurement

techniques – Section 3: Radiated, radio – frequency, electromagnetic field immunity test.

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[14] SANS / IEC 61000-4-4: Electromagnetic compatibility (EMC) – Part 4: Testing and measurement

techniques – Section 4: Electrical fast transient/burst immunity test.

[15] SANS / IEC 61000-4-5: Electromagnetic compatibility (EMC) - Part 4: Testing and measurement

techniques - Section 5: Surge immunity tests.

[16] SANS/IEC 61000-4-8: Electromagnetic Compatibility (EMC) – Part 4-8: Testing and measurement

techniques – Power frequency magnetic field immunity test.

[17] IEC 61000-4-18: Electromagnetic Compatibility (EMC) – Part 4-18: Testing and measurement

techniques – Damped oscillatory wave immunity test.

[18] IEC 60255-5: Insulation test for electrical relays.

[19] IEC 60255-25: Electrical Relays – Part 25: Electromagnetic emission tests for measuring relays and

protection equipment

[20] IEC 61850: Communication Networks and Systems in Substations.

[21] ITU-T G703: Physical/Electrical Characteristics of Hierarchical digital interfaces

[22] ITU-T X.21: Interface between DTE and DCE Equipment for Synchronous Operation on Public Data

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b) Functions required

1. Logging of local and remote alarm information.

2. Logging of local and remote operational status information.

3. Programming of local and remote operational parameters.

4. Chronological register of alarms and events.

5. Communication with the remote PLC shall preferably be established through an integrated

service channel.

6. All the main functions of the equipment (e.g. voice/data services, teleprotection parameters

bandwidth selection, channel characteristics, etc) shall be programmable from the service

interface/ HMI via a management console (PC/laptop).

c) HMI interface standards/ requirements.

1. The preferred HMI communications port for local engineering access is the Ethernet (RJ45).

The multimode fibre optic port for the IEC 61850 application should also allow for remote

access for the HMI. The other acceptable interface is the EIA-232.

2. All software shall be compatible with the Microsoft Windows XP, Windows 7 or later versions

of the Microsoft operating systems with the preferred 64-bit configuration.

3. Adaptors required to connect the equipment to PC ports e.g. USB to RS-232 , and proven to

be compatible with the equipment, shall be specified and shall be included as an option on

a price schedule.

4. If web interfaces are used, these interfaces must not be required to change the web interface

parameters (e.g. IP addresses, etc) on the PC’s web software as this might create problems

on the user’s Eskom/ NTCSA (Operating System) account.

5. All HMI and enabling software shall be provided as part of the equipment supplied and

updates shall be provided free of charge for the lifespan (OEM recommendation) of the

equipment. The supplier to inform Eskom of all firmware upgrades on the PLC equipment

and the HMI. The firmware and HMI revisions must be backward compatible.

6. The event and alarm logs shall be easily exportable in a Microsoft ExcelTM, PDF or similar

format.

7. The Management Console must feature a software based measuring facility which can

access and display important test data internal to the PLC equipment. The capability of

presenting it in graphical form, on the time and frequency scale will be an advantage. The

console must also provide for tuning and testing of the PLC with generation of all signals

required to tune and test the RF filters and AF options, providing a help function with

explanations for all actions that may be performed.

8. All test points shall be suitable for measurements with test equipment of 75Ω or 600Ω

impedance (either Terminated or High Impedance). Adaptors or test cords shall be supplied

to adapt measurement points to test equipment terminals of 600Ω balanced (4mm bunch

plug) or 75Ω unbalanced (BNC).

9. The PLC and related equipment shall use light emitting diodes for indications.

d) Cyber Security

1. IEDs shall support the implementation of 240-55410927, Eskom’s cyber security standard.

2. IEDs shall support role-based access in at least three levels:

i. Read-only access

ii. Read access, writing of selected application-specific settings

iii. Full read and write access

be totally independent from each other.

3.4.4 End-to-end and local test facilities

a) Manual end-to-end test facilities are not required. The system shall be continuously monitored and

an alarm given in the event of an active component failure.

b) The following test facilities, built into the teleprotection, are desirable and will be considered in the

evaluation of the teleprotection equipment

1. Automatic, non-intrusive, in service loop testing.

2. Trip counters.

3. Time stamped event recording with resolution of 1ms or better. It should be possible to

connect the event recorder to an external time signal (e.g. GPS receiver) for accurate time

stamping.

c) Test plugs, relays or switches that can be used to interrupt the connection to the protection relay

panel are not acceptable.

d) Local test facilities, that can be used to initiate a command over the teleprotection channel, shall be

interlocked with a key switch or special programming requirement. Alternatively, test systems that

test the guard and command channel independently and that cannot generate a genuine command

signal, are acceptable.

e) In-built echo or reflex test systems that can echo a genuine command signal are not required.

3.4.5 Management and Alarms

a) If the Teleprotection system cannot be accessed through the PLC HMI interface, the service interface

shall be provided to connect a management console to the equipment for status information retrieval,

configuration, chronological register of alarms and events, and to integrate the equipment into a

management system. The interface shall comply with the requirements detailed for the PLC HMI

interface in section 3.2.12 Management, Alarms and test facilities.

b) Each teleprotection unit shall include alarm circuits associated with the transmitter and the receiver,

to monitor the state of the teleprotection equipment to identify fault location at either of the two

terminals on a teleprotection link.

c) Each module shall include relevant LEDs on the module face-plate to indicate the type of failure.

d) The transmitter and receiver alarms, if not integrated into the alarm system of the PLC, shall each

provide a potential free change-over contact for external use by Eskom.

e) All alarm relays shall operate in the healthy state and shall release on loss of power. A power

indication LED shall indicate the state of the power supply.

f) All alarm circuits shall be self-resetting.

m) The gland plates fitted to the top and bottom of the carrier cabinets shall be pre-punched and the

holes filled with plastic filler caps. The required gland hole arrangement is shown in Annex F, Figure

F1.

n) The gland plate at the bottom of the cabinet shall be fitted with a removable inspection plate in the

vicinity of the external earth stud.

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i) A compression terminal or lug capable of accommodating at least two 16 sq mm conductors shall be

located at the bottom and top of the cabinet, for the equipment earth.

j) A cabinet wiring diagram, similar to the drawing given in Annex F Figure F2 or F3 shall be fixed to

the inside of the cabinet door. In addition, a drawing of the layout of the equipment modules, their

function, test point numbers and module serial or drawing numbers shall be fixed to the inside of the

door.

k) All terminals and wiring, etc, used, shall be to Eskom’s approval.

l) Cabinet cabling harnesses shall be available as separate purchase items to be installed and

connected in position by Eskom for any additional equipment that may be installed at a later date to

achieve all alternate configurations.

m) Care shall be taken with the cabinet wiring to ensure that the weighted disturbance power generated

by any speech transmitter or telemetering transmitter circuits and appearing on any receiver, shall

be less than 60dBmOp (Sp) in the case of speech circuits and –52dBmO (50Bd) in the case of

telemetering circuits.

n) The power and teleprotection control cables and wiring shall be kept separate from all signalling and

speech circuit cables.

o) The cabinet wiring shall also comply to the Eskom document, 240-75975613, “Standard for the

installation of Power Telecommunications Equipment”.

3.5.5 Equipment design and testing facilities

a) Individual units, modules, printed boards, etc. shall be of the plug-in variety to facilitate maintenance.

b) The carrier transmitter output amplifier shall include a surge protection circuit and shall be designed

to accommodate an open circuit or short circuit across the output terminals without the risk of damage

to components. The HF input/output circuit shall incorporate surge protection.

c) Supervisory LEDs shall indicate the healthy state of important circuits, and potential-free alarm

contacts shall be available for connection to Eskom’s alarm circuits to indicate equipment failure.

d) The management console, as specified in 3.2.12 shall facilitate measurement of all pertinent test and

monitoring points. Test points mounted on the front panels or face plates of the various modules

shall facilitate measurement with a Transmission Measurement Set (TMS) with a maximum input

impedance of 5k or alternatively, 600, or 75. All test points shall either be given in dBm or dBu

(0dBv = 0,775V). Test point information shall still be available on the module face-plate after the

sub-rack cover plate has been removed.

e) The HF input/output of the carrier shall be 75 unbalanced. Test points for measuring the line levels

shall be wired to plug-in sockets mounted on the front panels or face-plates. In addition, it shall be

possible to terminate the HF output with a 75 non-inductive load resistor, equal in rating to the

nominal PEP of the carrier set using links or plugs. The load resistor shall form a permanent part of

the carrier set. The HF output cabling of each carrier shall be terminated on a UHF co-axial socket

in the rear of the cubicle, as specified in Annexure F, Figure F5. All test points shall be suitable for

measurements with test equipment of 75Ω or 600Ω impedance (either Terminated or High

Impedance). Adaptors or test cords shall be supplied to adapt measurement points to test equipment

terminals.

f) Facilities for signal level adjustment, with a setting accuracy of 0.25dB, shall be available. If software

programming is not employed, attenuator pads incorporating strapping pins are preferred. If

potentiometers are used, they shall be of the professional quality multi-turn helical type.

Potentiometers with a maximum rotation of 270° are not acceptable for signal level adjustments.

g) The individual components shall be adequately de-rated in terms of current, voltage, power and

temperature, taking into account the supply voltage and temperature tolerances specified, so as to

ensure long life and reliable operation.

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b) The concept shall support a seamless migration from the digitised single side-band PLC into a full

digital PLC through the implementation of a converter/multiplexer unit.

c) In cases where a full digital PLC with increased channel capacity is not specified from the beginning,

the migration to full digital must be possible any time on site, without affecting the frequency allocation

or existing coupling arrangement.

d) The modem should be robust and capable of reliable digital transmission of rates of up to 64kbit/s

on a 4 kHz bandwidth, upgradable to increasing bandwidth depending on channel characteristics,

(S/N, distortion etc). Speed must be adjustable in steps to ensure optimal adaptation to the prevailing

transmission conditions.

e) The transmission bandwidth shall be programmable to provide optimum utilisation of the PLC

channel.

f) The equipment shall preferably provide automatic transmission speed adaptation (fallback /

fallforward) in programmable steps, according to the actual prevailing channel conditions. Automatic

speed adaptation must be able to be enabled or disabled by choice.

g) It shall be possible to accommodate within the aggregate a combination of speech and data signals

of varying speeds.

h) The data rate of the multiplexer channels shall be individually programmable.

i) V11/RS232 (synchronous and asynchronous), V24/X21, RS422A and LAN (RJ45) interfaces,

electrically isolated, from ground and against each other, shall be available.

j) The Ethernet (LAN) communication channel shall be specified for a minimum 10 Mbps with auto

negotiation. The interface shall be RJ45 which shall be electrically isolated. An option for an optical

interface could be provided and should cater for both the 850 nm multimode 50/125 μm fibre optic

cores as well as the 1310nm single mode (9/125 um) fibre optic cores. The preferred fibre connector

type for the 850 nm multimode fibre optic core is LC.

k) The data rate shall be programmable for 9600bit/s and 19200bit/s for asynchronous data circuits and

voice circuits.

l) 2/4 wire operation with DTMF signalling shall be possible, as well as remote subscriber operation.

m) Protection Signalling shall not be affected or influenced by this converter/ multiplexer. Protection

signalling must be possible with the same level of security and dependability as with normal PLC

transmission.

n) The system configuration shall be flexible and allow various modes of operation with the Digital PLC.

The digital PLC configuration could utilise the full 4kHz, 8kHz or 16kHz bandwidth for the digital

(data) transmission.

3.3 Carrier combiner units (CCU) and Symmetrical hybrids (SH)

3.3.1 General

The carrier combiner units (CCU) consists of symmetrical HF hybrids that are mounted within carrier cabinets.

B-BBEE Minimum Level: 3

No other financial requirements are specified in the provided content.

The inputs and outputs of the carrier equipment, including cabinet cabling and telephone interfacing equipment, shall comply with the levels specified in Table 2 of the specification. Table 2 covers insulation and electromagnetic compatibility requirements for power line carrier and related teleprotection equipment, including dielectric withstand voltage tests, impulse tests, insulation resistance, damped oscillatory wave immunity, electrical fast transient/burst, and surge immunity tests.

The PLC enclosure shall have passed the Power Frequency Magnetic Field test of SANS/IEC 61000-4-8 with compliance to Class 5: 100 A/m continuous, 1000 A/m for 1 to 3 s, 50 Hz.

The PLC enclosure shall have passed the Electrostatic Discharge test of SANS/IEC 61000-4-2 with compliance to level 3: 6 kV contact discharge and 8 kV air discharge, including measuring points on front panel.

The PLC shall have passed the Radiated Electromagnetic Field Requirements test of SANS/IEC 61000-4-3 to compliance Level 3: 10 V/m.

The PLC power supply shall have passed the Conducted Emission test of IEC 60255-25: 0.15–0.5 MHz 79 dB (uV) quasi peak, 66 dB (uV) average and 0.5–30 MHz 73 dB (uV) quasi peak, 60 dB (uV) average.

The equipment shall neither suffer damage nor maloperate (e.g. output change from “guard” to “trip”) when any of the tests called for in Table 2 and sections 3.2.11 and 3.4.4 are performed. After completion of tests, equipment shall be checked for correct operation.

The IEC/SANS standards shall be specified for the tests in Table 2 and section 3.2.11 a), b), c) and d); if PLC complies with other equivalent standards from IEC, SANS, ITU-T and CISPRE, details shall be provided by supplier to Eskom/NTCSA for evaluation.

B-BBEE Minimum Level: 3

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b) The supplier must specify the minimum separation requirement for the 2 kHz PLC. Attenuation of the

transmitted signal shall not exceed either 0.5dB for 1 transmitter or 1dB for 3 or more transmitters,

due to the loading effect of adjacent transmitters, when the 8 kHz spacing is applied.

c) Each carrier set shall include a high frequency hybrid to connect the transmitter and its associated

receiver to line. The hybrid shall be of unsymmetrical design, so as to introduce no more than 1dB

of attenuation in the direction transmitter to line. The hybrid circuit shall incorporate variable resistive

and reactive components in the balancing network. It shall be designed to cope with a varying line

impedance resistive component between 35 and 150 and a reactive component which could vary

between 75 capacitive to 75 inductive. With this arrangement, trans-hybrid attenuation of up to

56dB shall be possible. It is preferred for the RF hybrid to be adjustable from the front (faceplate).

d) The two-wire HF input circuit to the hybrid shall be protected. Eskom prefers the protection of the

hybrid with a 350V, 1s, gas discharge tube. If the supplier uses an alternative method, the supplier

to provide the details of this method of protecting the hybrid and PLC.

e) The carrier HF input/output shall have nominal impedance of 75 unbalanced.

f) The return loss in the transmit and receive bands shall be  10dB.

3.2.3 PLC Frequency requirements

a) The virtual carrier frequency (HF) shall not differ from its nominal value by more than  20Hz on

systems using suppressed carrier.

b) In a pair of PLC terminals, the frequency difference between a voice frequency signal applied to the

transmit end and that at the receive end shall not exceed 1Hz after 1 year of operation.

c) Carrier Frequency Duplex Channel Allocations:

1. Carrier Frequency channel allocations will be made in accordance with the chart given in

Annexure E of the specification. If a 2kHz, 8 kHz, 16kHz bandwidth PLC are used, then the

channel allocations will be adjusted accordingly.

2. For ordering purposes Eskom always assumes that the carrier transmits a residual carrier

at the lower band edge of the channel, and the information is transmitted by the upper

sideband. The frequency of the residual carrier is used in the order document. This

convention is used irrespective of the actual residual carrier or sideband arrangement e.g.

The carrier operating in the following 4 kHz bands:-

Table 1: Example of PLC frequency labelling convention

2kHz PLC 4kHz PLC 8kHz PLC 16kHz PLC

Tx 104 to 106 kHz Tx 104 to 108 kHz Tx 104 to 112 kHz Tx 104 to 120 kHz

Rx 106 to 108kHz Rx 108 to 112kHz Rx 112 to 120kHz Rx 120 to 136kHz

Will have its frequencies specified as follows:-

Tx 104 kHz Tx 104 kHz Tx 104 kHz Tx 104 kHz

Rx 106 kHz Rx 108 kHz Rx 112 kHz Rx 120 kHz

3.2.4 Automatic gain control and receiver sensitivity

a) A HF level variation of + 10/-30dB about the nominal receive level, within the regulation range, shall

not change the voice frequency receive levels of speech or signals by more than  1 dB.

b) The maximum receiver sensitivity for speech signals, with the automatic gain control (AGC) at the

end of its regulation range, shall not be less than the minimum signal of –20dBm measured at the

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3.4 Teleprotection equipment

3.4.1 General

a) A teleprotection system, that is capable of being integrated into the carrier equipment detailed in

section 3.2, shall be available.

b) The teleprotection system shall be able to provide no less than three totally independent bi-directional

channels capable of simultaneous operation in any combination.

c) The teleprotection equipment shall be suitable for operating in the permissive, blocking or direct

transfer trip modes of protection.

3.4.2 Equipment design

a) Teleprotection equipment shall use the carrier pilot signal for the guard signal under quiescent

conditions. When a command signal is transmitted, the signalling shall take place within the speech

band.

b) The teleprotection transmitter boost or exalt circuit shall be linked to the command circuit lead so that

when a command signal is transmitted the command signal is boosted and all speech and data

signals on the PLC shall be blocked, during the operation of the associated protection equipment, so

that the full SSB power is available for transmitting the teleprotection signals.

c) The teleprotection system shall be capable of operating with a maximum sudden attenuation of 20dB

caused by a line fault. This gross dynamic range can be achieved by a combination of the

teleprotection receiver dynamic range and the increase in transmitter level obtained by boosting the

transmitted command signal. The equipment shall be designed so that the teleprotection signal is

received within the standard clear channel transmission time, with a maximum sudden fault

attenuation of 20dB.

d) The equipment shall be designed so that a single component failure cannot produce a false

command output. In the event of an active component failure, the command output shall be blocked

and an alarm given.

e) The failure of any components in the command output circuit shall not give rise to a false command

output.

f) All relays associated with protection intertrip functions shall be according to 240-57649048.

g) Command hold or command memory circuits in either the teleprotection transmitter or receiver are

not required.

h) The command output from the teleprotection receiver shall be blocked after 1s and an alarm given if

the command signal is present for longer than 1s.

i) All teleprotection equipment shall be suitable for operation in any of the protection modes specified

in 3.4.1.c) of this section. The required mode of operation shall be selected by suitable programming

options of the teleprotection equipment.

j) All teleprotection equipment shall be equipped for independent bi-directional operation. Blocking of

the teleprotection receiver by the teleprotection transmitter is NOT required.

k) The teleprotection receiver shall give a command signal output, provided that the command signal

is received within 100ms of the guard signal disappearing. If a command signal is not received within

100ms the command output shall be blocked and an alarm given. The circuit shall reset automatically

on receipt of a continuous guard signal. A continuous guard signal is an undisturbed signal for at

least 50ms.

l) The received signal shall be monitored continuously by the receiver and an alarm signal given if

neither a guard nor a command signal is present.

m) The teleprotection transmitter output shall be monitored continuously and an alarm given if the

transmitter output fails.

3.4.3.7 Number of Teleprotection channels

a) Systems shall be designed and equipped for, at least, three channel operation, The facilities detailed

in 3.4.3.5, shall be duplicated for each teleprotection channel.

b) In addition each channel’s interface with Eskom’s protection relay equipment shall be galvanically

separate and independent of the others. Common leads with common potentials are not acceptable.

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3.5.2 Standard Cabinet Arrangement for Power Line Carriers

A typical configuration is demonstrated in Annex F Figure F4 of this schedule. The cabinets shown are fully

equipped. Other standard arrangements may be made up by utilising partially equipped cabinets. In all cases

the cabinets shall be able to be equipped with wiring to accept additional equipment at a later stage, to fully

equip the cabinet.

a) A minimum of two power line carrier ratings are required.

Type CX40/50 40 or 50 Watts PEP

Type CX80/100 80 or 100 Watts PEP

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Data If required. (Information completed by Manufacturer from order documents).

Channel:-

Speech If required. (Information completed by Manufacturer from order documents).

Channel:-

c) Carrier Frequency Duplex Channel Allocations

1. Carrier Frequency channel allocations will be made in accordance with the chart given in

Annexure E of the specification. If a 2kHz, 8 kHz, 16kHz bandwidth PLC are used, then the

channel allocations will be adjusted accordingly.

2. For ordering purposes Eskom always assumes that the carrier transmits a residual carrier at

the lower band edge of the channel, and the information is transmitted by the upper sideband.

irrespective of the actual residual carrier or sideband arrangement e.g. The carrier operating

in the following 4 kHz bands:-

2kHz PLC 4kHz PLC 8kHz PLC 16kHz PLC

Tx 104 to 106 Tx 104 to 108 Tx 104 to 112 Tx 104 to 120

kHz kHz kHz kHz

Rx 106 to Rx 108 to Rx 112 to Rx 120 to

108kHz 112kHz 120kHz 136kHz

Will have its frequencies specified as follows:-

Tx 104 kHz Tx 104 kHz Tx 104 kHz Tx 104 kHz

Rx 106 kHz Rx 108 kHz Rx 112 kHz Rx 120 kHz

d) The Protection channel labelling shall be completed by Eskom.

3.5.4 Cabinet wiring

a) The cabinets, terminal and cabinet wiring shall be arranged similar to Annex F Figure F2, F3, F4

and/or F5 as applicable for either swing frame or front and rear entry cabinets. All wiring, terminals,

etc. shall be to Eskom’s approval and details must be furnished at the time of tendering.

b) Each cabinet shall be wired and fitted with all terminal blocks to fully equip each equipment version

to accommodate actual equipment arrangement ordered.

c) The terminal blocks for the SSB speech functions and the cabinet alarms shall be either telephone

tag blocks, “Klippon” type terminals, “Krőne” type insulation displacement or similar which shall be

suitable for solid conductors with a cross sectional area from 0,3 sq mm to 2,5 sq mm.

d) The terminal blocks for the protection cabling functions shall be non-disconnectible “Klippon” type

terminals, or similar and shall be suitable for standard or solid conductors with a cross section area

from 0,3sq mm to 2,5sq mm.

e) The terminal blocks for power cabling shall be “Klippon” type, or similar, suitable for conductors with

a cross sectional area from 4 to 16 sq mm.

f) The power cable and protection cable terminal blocks shall be fitted with protective covers.

g) The twin co-ax connectors, one set provided for each SSB in the cabinet, shall be UHF type SO239T,

each socket fitted with a UHF plug. The co-axial plugs shall be of the PL 295 crimp type suitable for

RG11A/U cable, e.g. “Suhner” type UHF-0-7-19c/022 or similar.

h) On original equipment orders, the cabinet shall be supplied with all the appropriate cables connected

to the equipment sub-racks.

The document is an Eskom specification for Power Line Carrier and Integrated Teleprotection Equipment (Unique Identifier: 240-106920490, Revision: 3). It supersedes TSP41-65. The specification applies throughout Eskom Holdings Limited Divisions. It includes requirements for environmental conditions, power line carrier equipment, carrier combiner units, teleprotection equipment, housing, cabling, labelling, test equipment, drawings, instruction manuals, tools, test equipment, spares, quality assurance, tests, delivery, packaging, labelling, and statement of compliance or deviation. The document includes annexes for voice configurations, group delay and attenuation distortion limits, teleprotection interfaces, type test circuits, frequency allocations, cabinet/wiring/CCU diagrams, and technical schedules A&B.

Eskom/NTCSA for evaluation.

The IEC 61850 standards combine the ethernet based communication standards with the functionality of the

3.6.4 Quality assurance and system reliability .............................................................................. 33

The tender is for the supply, testing, delivery, and off-loading of Power Line Carrier (PLC) equipment. No further description is provided.

Closing date: 2026-09-30 at 10:00 (SAST). No other dates (briefings, site visits, clarification deadlines) are stated in the document.

No specific contact names, emails, or phone numbers are provided in the document. All communication must be with the Eskom Representative in writing.

Submit electronically via the Eskom Tender Bulletin site on the Eskom E-tendering page by the closing time (SAST). No late tenders accepted; the e-tender system will not allow submission after closing. Tenders must be in English and signed electronically. Complete the Acknowledgement Form and submit it with the tender, stating whether the tender is for the whole or part of the works. Return all mandatory tender returnables by the tender submission deadline; other returnables required for contract award must be submitted before award. Do not deposit tenders in a tender box; only electronic submission is accepted. Ensure all documents are uploaded in the correct folders (technical, commercial, financial) as indicated on the e-tendering page. Site visits or clarification meetings may be compulsory; failure to attend results in disqualification. CSDG applies to works over R60 million or professional services over R5 million with duration 12 months or more. CPG applies to Grade 7-9 GB/CE contracts with duration 6 months or more, requiring at least 5% engagement of targeted enterprises. Security for performance may require naming at least two financial institutions. Misrepresentation or fraud may lead to disqualification and suspension.

Evaluation follows PPPFA: price and B-BBEE level scores are added and ranked. If functionality is a criterion, tenderers must meet the minimum threshold stated in the Tender Data; only those meeting it are evaluated further. Basic compliance and mandatory returnables are checked first; failure renders the tender non-responsive. Pre-qualification criteria (e.g., B-BBEE level, local content) may be applied; proof must be provided at tender submission deadline. Financial risk assessment may disqualify if risk is too high. Arithmetical errors are corrected as per specified rules; the amount in words governs. B-BBEE level is scored from CSD report or certificate; if not provided, score zero under PPPFA but not disqualified (unless pre-qualification). Objective criteria per Section 2(1)(f) may be used but not functionality or B-BBEE elements. Reverse e-auction may be used; if so, prices must be omitted from the tender.

The tender is for the supply, testing, delivery, and off-loading of Power Line Carrier (PLC) equipment. No further technical specifications are provided in the document. Tenderers must provide reasonable proof that safety, health, environmental, and quality (SHEQ) systems, policies, and capabilities are in place at contract award. All costs and personnel associated with SHEQ must be reflected in the tender.

Prices must include all duties, taxes (including VAT), and levies applicable 14 days prior to tender submission. Rates and prices must be fixed for the contract duration. Prices must be in South African Rand unless otherwise instructed. Arithmetical errors in pricing schedules will be corrected as per specified rules; the amount in words governs.

Prices must include all duties, taxes (including VAT), and levies applicable 14 days prior to the tender submission deadline. Rates and prices must be fixed for the contract duration unless otherwise provided. Prices must be in South African Rand unless instructed otherwise, and in accordance with the exchange rate and base date stipulated. If security for performance is required, the tenderer must name at least two financial institutions they will approach; Eskom may reject unsuitable institutions. Arithmetical errors in pricing schedules will be corrected as per specified rules; the amount in words governs.

CSD registration required (per NT instructions).

Tax compliance status (SARS) required.

B-BBEE certificate or affidavit required; if pre-qualification, must be provided at tender submission deadline.

CIDB registration mandatory if applicable; proof at tender closing deadline, or proof of application with actual registration by contract award.

SHEQ systems, policies, and capabilities must be in place at contract award.

SD&L Undertaking must be completed and submitted by contract award.

Comply with PPPFA, dti designated materials, COIDA, OHS Act, and Eskom SHEQ requirements.

Comply with COIDA, OHS Act, and Eskom's SHEQ requirements. Provide proof of SHEQ systems and capabilities at contract award. Costs for SHEQ must be included in the tender.

Eskom may accept or reject any variation, deviation, or alternative tender, and may cancel the tender process at any time prior to contract formation. Eskom is not liable for any losses or damages incurred by tenderers during the process. Eskom reserves the right to negotiate with selected tenderers. Tender validity must be maintained for the period stated; if not extended, tenders become invalid. Confidentiality of tender documents is required; use only for preparing the tender. Tenderers must sign the final contract if awarded.

Tenderers must comply with eligibility criteria in the Tender Data and must not be under restriction to do business with Eskom/State Owned Companies. Sub-contracting 100% of the SOW is not permitted. Tenderers must comply with relevant legislation including NT instructions, CIDB regulations, PPPFA, B-BBEE codes, COIDA, OHS Act, and Eskom SHEQ requirements. SD&L Undertaking must be submitted by contract award.

Basic compliance and mandatory returnables are checked first; failure renders non-responsive. Pre-qualification criteria may apply. Functionality scoring may be used with a minimum threshold. Financial risk assessment may disqualify. Price evaluation includes factors like CPA, FOREX, discounts, NPV. Arithmetical errors are corrected as specified. B-BBEE scoring and ranking per PPPFA. Objective criteria may be used per Section 2(1)(f). Reverse e-auction may be used; if so, prices must be omitted.

Closing date: 27 January 2025 (per document). Note: the tender record lists closing date as 2026-09-30T10:00:00.000Z; the document states 27 January 2025. No other dates are stated.

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Returnable documents: the completed and signed E-Tendering Training Acknowledgement Form (Annexure) must be submitted to Eskom within the prescribed period. Failure to fully complete and submit this form will render the bidder non-responsive and disqualified. The form must be submitted prior to the tender closing.

Bidders must submit the completed Acknowledgement Form – E-Tendering Training within the prescribed period. Failure to do so will render the bidder non-responsive and disqualified from the Procurement Process.

Mandatory returnable: E-Tendering Training Acknowledgement Form – must be fully completed and submitted to Eskom within the prescribed period. Failure to do so disqualifies the bidder.

The tender is for the supply, testing, delivery and off-loading of Power Line Carrier (PLC) equipment. The document provided is a Contract Quality Plan (CQP) template that the supplier must complete to demonstrate how they will meet the client's quality management expectations.

The bidder must complete and submit the Contract Quality Plan (CQP) for evaluation. The CQP must be approved by the owner of the organisation. The bidder must comply with ISO 9001 and SANS 466:2005. The bidder must identify and manage sub-suppliers and outsourced activities. The bidder must provide a list of tools and equipment and their calibration/maintenance status. The bidder must describe how customer property and product preservation will be handled.

The scope is the supply, testing, delivery and off-loading of Power Line Carrier (PLC) equipment. The bidder must provide a Contract Quality Plan (CQP) that addresses quality management for the contract, including definitions, scope of work, communication channels, organogram, interfacing documents, supplier and sub-supplier management, monitoring, items to be manufactured or purchased, quality control plans/inspection test plans, special controls, documented information to be submitted to Eskom, records control, concession and non-conformance management, databook management, tools and equipment, customer property, product preservation, identification and traceability, and commissioning and post-delivery activities.

The bidder must comply with ISO 9001 and SANS 466:2005 for quality management. The bidder must complete and submit the Contract Quality Plan (CQP) template.

The contract is for the supply, testing, delivery and offloading of Power Line Carrier (PLC) equipment on an 'as and when required' basis over a period of five (5) years for the National Transmission Company South Africa (NTCSA). The contract number is to be inserted. The document is the Contract Data Part 2 (C1.2b) to be completed by the supplier.

Closing date: 2026-09-30 at 10:00 (from tender record). No other dates stated in the document.

The document provides a contact for obtaining the NEC3 Supply Contract Guidance Notes: Engineering Contract Strategies, Tel 011 803 3008, Fax 086 539 1902, www.ecs.co.za. No other contact information is provided.

Returnable documents: none explicitly listed in the extracted text. The document is the Contract Data Part 2 (C1.2b) to be completed by the supplier. The supplier must complete all data fields in full, according to the options chosen, to create a complete contract. The contract number is to be inserted. The supplier must provide its name, address, telephone and fax numbers. The tendered total of the Prices must be stated in figures and words. The price schedule must be referenced. The delivery date(s) for goods and services must be stated. The programme must be referenced. The percentage for overheads and profit added to the Defined Cost must be stated. The Goods Information for the Supplier's design must be referenced. The matters to be included in the Risk Register must be stated. Restrictions to access for the Supply Manager and Others must be stated. The document is based on the NEC3 Supply Contract (SC3) and its Guidance Notes. The supplier must read both the SC3 and the relevant parts of the Guidance Notes. The supplier must complete the data by hand in ink or by clicking on form fields. Completion of the data in full is essential.

Unable to extract eligibility criteria from the provided document. The document is a contract data form, not an evaluation criteria section.

The contract is for the supply, testing, delivery and offloading of Power Line Carrier (PLC) equipment on an 'as and when required' basis over a period of five (5) years for the National Transmission Company South Africa (NTCSA). The supplier must provide the Goods Information for the Supplier's design. The supplier must state the delivery date(s) of the goods and services. The supplier must state the programme. The supplier must state restrictions to access for the Supply Manager and Others to work being done for this contract.

The supplier must state the percentage for overheads and profit added to the Defined Cost. The supplier must read the NEC3 Supply Contract (SC3) and its Guidance Notes. The supplier must complete the data in full according to the options chosen. The supplier must provide the Goods Information for the Supplier's design.

The supplier must state the tendered total of the Prices in figures and words. The supplier must reference the price schedule. The supplier must state the percentage for overheads and profit added to the Defined Cost. The supplier must state the matters to be included in the Risk Register.

The supplier must state the tendered total of the Prices in figures and words. The supplier must state the percentage for overheads and profit added to the Defined Cost. The supplier must reference the price schedule. The supplier must state the matters to be included in the Risk Register.

No specific compliance requirements (e.g., CSD, tax, B-BBEE, CIDB) are stated in the extracted text. The document is a contract data form, not a compliance checklist.

The supplier must state the restrictions to access for the Supply Manager and Others to work being done for this contract. No other health and safety requirements are stated in the extracted text.

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Supply, testing, delivery and offloading of Power Line Carrier (PLC) equipment on an "as and when required" basis over a period of five (5) years for the National Transmission Company South Africa. The contract is an NEC3 Supply Contract (SC3). The price schedule is a pricing document only; it does not contain instructions for the work. The supplier must provide goods and services in accordance with the Goods Information. The supplier should insert any additional items considered necessary into the price schedule. The total of the prices is assumed to be fully inclusive of everything necessary to provide the goods and services. The supplier must include in prices and rates for correction of defects (core clause 43.1) as there is no compensation event for this unless the defect is due to a supplier's risk. The supplier must spread the cost of work not listed separately across other prices and rates. There is no adjustment to lump sum prices if quantities change; the only basis for a change is a compensation event per clause 60.1. The supplier does not have to allow for matters arising from a compensation event. Format of the price schedule: for lump sum items, enter the amount in the Price column only; for rate-based items, enter the rate and quantity to produce the Price; for time-based items, state a unit of time and the length of time as a quantity. The price schedule is referenced as Pricing Schedule (PS5).

The contract is a priced contract where prices are derived from a list of items priced as lump sums or as expected quantities multiplied by a rate, or a mix of both. The Price Schedule is only a pricing document, not Goods Information. The tendering supplier should insert any additional items considered necessary, and the total of the Prices is assumed to be fully inclusive of everything necessary to Provide the Goods and Services. The supplier must include in Prices and rates for correction of Defects (core clause 43.1) as there is no compensation event for this unless the Defect is due to a Supplier's risk. The supplier must spread the cost of work not listed separately across other Prices and rates. There is no adjustment to lump sum prices if quantities change; the only basis for a change is a compensation event per clause 60.1. The supplier does not have to allow for matters arising from a compensation event. Format: For lump sum items, enter amount in Price column only; for rate-based items, enter rate and quantity to produce Price; for time-based items, state unit of time and quantity of time. Price schedule notes: Prices exclude VAT; lead time to be stated; transportation by Supplier; CPA kicks in after sixteen months from contract base date; 15% of prices fixed and firm, 85% subject to escalation as per clause X1; latest/ruling index used for CPA calculation aligned to delivery dates.

Prices exclude VAT. Lead time must be stated in weeks from date of order acknowledgement. Transportation of the goods will be undertaken by the supplier. The contract price adjustment (CPA) will apply after sixteen (16) months from the contract base date (which is one month prior to enquiry closing) for commodities with less volatile prices. The sixteen months comprise one month prior to enquiry closing, three months normal tender validity period as prescribed by the CIDB Act, and the first twelve months of the contract period. 15% of the prices will be fixed and firm; the remaining 85% will be subject to escalation as per clause X1. The latest/ruling index used for CPA calculation will be aligned to the delivery dates of the equipment on the assessment for payment on a particular payment certificate month. Payment is assessed per clause 50.2: the amount due is the price for each completed lump sum item, plus amounts calculated by multiplying completed quantities by rates, plus other amounts to be paid, less amounts to be paid by or retained from the supplier. Any tax required by law to be paid to the supplier is included in the amount due.

No specific requirements found

Returnable documents: The Quality Control Plan or Inspection Test Plan (QCP or ITP) must be completed and submitted. The QCP/ITP must include scope of work, item/plant/material description, activities, intervention points, inspection and test methods, controlling documents, acceptance criteria, and records. Approvals are required from the Contractor/Supplier, Subcontractor (where applicable), Eskom, and Approved Inspection Authority (AIA) where applicable.

No specific evaluation criteria (e.g., price vs functionality, 80/20 or 90/10 preference point system) are stated in the provided document. Bidders must comply with the Quality Control Plan requirements and any applicable statutory or non-statutory inspection and testing obligations.

The scope of work is the supply, testing, delivery and off-loading of Power Line Carrier (PLC) Equipment. The QCP/ITP must cover the item/plant/material description and activities. Inspection and test methods may include visual, microscopy, NDT, liquid/dye penetrant, magnetic particle, eddy, etc. Acceptance criteria include functionality requirements, performance measures, regulatory compliance, chemical tests, etc. Intervention points include hold points, witness points, document review, surveillance, and verification. Testing categories include T1 (100% testing) and T2 (sample testing); inspection categories include A1 (100% inspection) and A2 (sample inspection); witness categories include W1 (100% witness) and W2 (sample witness); document review categories include R1 (100% document review) and R2 (sample document review).

No specific compliance requirements (e.g., CSD registration, tax clearance, B-BBEE level, CIDB grading) are stated in the provided document. Bidders must comply with the Quality Control Plan requirements and any applicable statutory or non-statutory inspection and testing obligations.

The document is a list of pre-vetted guarantors for Eskom guarantees, not a description of the PLC equipment tender. It lists entities from which Eskom will accept guarantees without further vetting.

Closing date: 2026-09-30 at 10:00 (per tender record). The document lists the pre-vetted guarantor list as at 31 August 2025, but no closing date is stated in the document.

Returnable documents: a valid guarantee from an Eskom-approved guarantor. Guarantors on the pre-vetted list are accepted without further vetting; guarantors not on the list must undergo Eskom Treasury vetting (up to 12 weeks) and the bidder accepts the risk that the bid may be marked non-responsive if the guarantee is not accepted. Standard SBD forms (SBD 1, SBD 3.1/3.2/3.3, SBD 4, SBD 6.1, SBD 6.2, SBD 7.1/7.2, SBD 8, SBD 9) and a declaration of authority to sign are required.

Bids will be evaluated for responsiveness regarding the guarantee. A bid without an acceptable guarantee may be marked non-responsive and not evaluated further. No other evaluation criteria are stated.

The tender is for the supply, testing, delivery and off-loading of Power Line Carrier (PLC) equipment. No technical specifications are provided in the document.

Guarantee requirements: Eskom will accept guarantees only from entities approved by Eskom Treasury. Pre-vetted guarantors are listed (local, foreign, and other). Guarantors not on the list must meet minimum credit ratings (National scale: za.A- or A3.za; Foreign currency: BBB- or Baa3) and are subject to Treasury vetting which can take up to 12 weeks. Guarantees from entities on the 'subject to credit limit availability' list are accepted only if the entity has available credit limit; if not, the bid may be marked non-responsive. The document lists available limits for certain insurers (e.g., Santam Limited 4,413,746,699.33; Old Mutual 5,895,431,670.28; Hollard Insurance 804,420,775.70; etc.).

Guarantee compliance: The guarantee must be from an Eskom-approved guarantor. Pre-vetted list includes local banks (Absa, FirstRand, Nedbank, Standard Bank, etc.), foreign banks (Barclays, BNP Paribas, Citibank, Deutsche Bank, etc.), and other entities (AIIB, Bank of China, etc.). Standard SBD forms must be completed.

Guarantees from entities not on the pre-vetted list are subject to Treasury vetting which can take up to 12 weeks. If the guarantee is not accepted, the bid may be marked non-responsive. For entities on the credit-limit list, acceptance depends on available credit limit; if not available, the guarantee is not acceptable and the bid may be marked non-responsive.

Asian Infrastructure Investment Bank (AIIB) is included in the list of pre-vetted guarantors.

Vetting means that at the end of evaluation, the entity may be found unacceptable and Treasury may not accept the guarantee. A bid with an unacceptable guarantee may be marked non-responsive and not evaluated further.

Returnable documents: the signed Environmental Management Declaration (Eskom environmental proforma). The declaration must be completed, signed by the contractor's designated representative (with designation, contact number, signature and date) and countersigned by the Eskom Project Manager. No other returnable forms are stated in the provided document.

The only stated evaluation criterion is compliance with the Environmental Management Declaration. Bidders must acknowledge and accept responsibility to comply with all environmental requirements, including adherence to the project Environmental Management Plan/Programme or Environmental Authorisation, Eskom's environmental standards, policies and procedures, and the environmental transgressions fine system. The declaration must be signed by the contractor's representative and the Eskom Project Manager. No scoring split, preference point system, or minimum qualifying thresholds are stated in the provided document.

Scope of work: supply, testing, delivery and off-loading of Power Line Carrier (PLC) Equipment. Environmental obligations during the contract include: reporting incidents within 24 hours of occurrence; keeping and submitting to the Eskom Project Manager on completion the following registers where applicable: approved project-specific Environmental File, incident/complaint register, herbicide and pesticide register, and hazardous substance (including solvents) register. Non-conformances must be addressed promptly.

Environmental compliance: bidders must sign the Environmental Management Declaration, undertaking to comply with all applicable environmental legal and other requirements, Eskom's environmental standards, policies and procedures, and the environmental transgressions fine system. No other compliance requirements (e.g., CSD registration, tax clearance, B-BBEE, CIDB) are stated in the provided document.

Returnable documents: C1.1 Form of Offer and Acceptance (3 pages) must be completed and submitted. Contract Data parts C1.2a (provided by Purchaser) and C1.2b (provided by Supplier) are to be inserted from Returnable Documents at award stage. Proforma Guarantees (C1.3) are included. No other submission instructions are stated.

The document does not specify evaluation criteria, scoring split, minimum qualifying thresholds, or preference point system. Only the contract structure is outlined.

Scope: Supply, testing, delivery and offloading of Power Line Carrier (PLC) equipment on an 'as and when required' basis over a period of five (5) years for National Transmission Company South Africa (NTCSA). The contract is an NEC3 Supply Contract (SC3).

The scope includes testing of the PLC equipment. No specific quality standards or certifications are stated.

C1.1 Form of Offer and Acceptance must be completed. Contract Data parts C1.2a and C1.2b are required. Proforma Guarantees (C1.3) are included. No other compliance requirements are stated.

The contract is an NEC3 Supply Contract (SC3) between NTCSA SOC Ltd and the supplier. It covers the supply, testing, delivery and offloading of PLC equipment on an 'as and when required' basis over five years. The contract includes Part C1 (Agreements & Contract Data), Part C2 (Pricing Data), and Part C3 (Scope of Work).

This document defines the technical evaluation criteria for the supply of Power Line Carrier (PLC) equipment. The evaluation consists of mandatory criteria, desktop evaluation, and practical evaluation. The document applies throughout NTCSA SOC Ltd. Normative references include ISO 9001, specification 240-106920490, and tender technical evaluation procedure 240-48929482.

Closing date: 2026-09-30 at 10:00 (as per tender record).

No other dates (briefings, site visits, clarification deadlines) are stated in the document.

No contact information (SCM or technical) is stated in the document.

Complete and submit the Supplier Equipment Tendered Declaration form (Appendix A) with the tender. If this form is not completed or not accepted by NTCSA, the full technical evaluation (mandatory, desktop, and practical) will be conducted. Completed Technical Schedules A & B from specification 240-106920490 must be submitted in English. Submissions failing any mandatory criterion will not proceed to desktop evaluation.

Technical evaluation has three stages: Mandatory Criteria Evaluation, Desktop Evaluation, and Practical Evaluation. Mandatory criteria: submission of completed Technical Schedules A & B (in English) and PLC equipment supporting a 2 kHz bandwidth PLC channel per section 3.2.1.1d1). Desktop evaluation: minimum pass mark of 75% (1021 out of 1362 points) based on compliance with Technical Schedules A & B. Practical evaluation: overall threshold of 75% for both the compliance list (30% weight) and routine tests (70% weight). Scoring: Fully compliant = 3, Partially compliant (minor deviation) = 1, Non-compliant (major deviation) = 0. Bidders not achieving the minimum threshold for each sub-category will not be evaluated further.

The PLC Link to be evaluated shall comprise: PLC Terminal Equipment 4kHz with Data interfaces, Carrier Combiner Unit CCU-1 for phase-to-phase coupling, Teleprotection Module, and PLC Link and CCU mounted in the cabinet specified in NTCSA standard 240-106920490. The equipment must support a 2 kHz bandwidth PLC channel. Practical evaluation includes sample evaluation and routine testing at the supplier's premises. Routine tests include: frequency setting and accuracy (channel end-to-end frequency difference less than 0.1 Hz), power supply voltage range 42-57.6 V DC, transmit level measurement, transmitter alarm test (pilot level reduced by 6 dB), AGC setting, CCU polarity and insertion loss checks (max 3.5 dB between primary and secondary windings or 0.5 dB between secondary windings), teleprotection alarm functions, signal transfer time measurement (Permissive Tripping max 16ms, Direct Transfer Tripping max 40ms), trip operation test, and System C interface requirements (input burden and inrush current test with 0.2uF capacitor charged to 1.5 times relay rated voltage).

Practical evaluation: The tenderer will be given 3 weeks' notice to arrange and facilitate the evaluation at their premises. The supplier must have complete PLC demo units and test instruments available and perform all testing and configuration required by NTCSA. The evaluation consists of sample evaluation (assessing compliance with Appendix B list) and routine testing (per Appendix C checklist). Routine tests include: PLC terminal equipment frequency setting and accuracy, power supply voltage range (42-57.6 V DC), power amplifier transmit level measurement, transmitter alarm test, AGC setting, CCU polarity and insertion loss checks, teleprotection alarm functions, signal transfer time measurement (Permissive Tripping max 16ms, Direct Transfer Tripping max 40ms), trip operation test, and System C interface requirements (input burden and inrush current test with 0.2uF capacitor charged to 1.5 times relay rated voltage).

Normative reference: ISO 9001 Quality Management Systems. The supplier must have complete PLC demo units and test instruments available for practical evaluation and perform all testing and configuration required by NTCSA.

Bid Bond: performance guarantees.

Comply with clauses 3.2.12c) 1), 3.2.12c) 6), 3.2.12c) 7), 3.2.12c) 8), 3.2.12c) 9), 3.2.12d) 2), 3.2.12d) 3), 3.2.12d) 4), 3.2.12e) 1), 3.2.12e) 4), 3.2.12e) 6), 3.2.12e) 7), 3.2.13i), 3.2.14e), 3.2.14i), 3.2.14j), 3.3.2a), 3.3.2b) 1), 3.3.2d), 3.3.2e), 3.3.2f), 3.4.1a), 3.4.1c), 3.4.2l), 3.4.2m), 3.4.3.2), 3.4.3.3), 3.4.3.4), 3.4.3.7a), 3.4.3.8), 3.4.4a), 3.4.4b) 2), 3.4.5a), 3.4.5b), 3.4.5c), 3.4.5f), 3.5.1a), 3.5.1b), 3.5.1d), 3.5.1l), 3.5.1m), 3.5.1n), 3.5.4a), 3.5.4b), 3.5.4d), 3.5.4e), 3.5.4f), 3.5.4g), 3.5.4i), 3.5.5c), 3.5.5d), 3.5.5e) of the specification, and provide supporting documentation for each.

The assessment is to evaluate the tenderer's capability to enter into a contract with NTCSA. The report and any actions recommended do not guarantee a contract. Any actions taken by the tenderer as a consequence are for the tenderer's account, and liability is not transferable to NTCSA. The assessment team has no authority or responsibility in the contracting decision. Statements or actions by the assessment team should not be interpreted as contract award or create liability for NTCSA.

The PLC Link to be evaluated shall comprise: PLC Terminal Equipment 4kHz with Data interfaces, Carrier Combiner Unit CCU-1 for phase-to-phase coupling, Teleprotection Module, and PLC Link and CCU mounted in the cabinet specified in NTCSA standard 240-106920490. The supplier must complete the 'Supplier Equipment Tendered Declaration' form in Appendix A, allowing exemption from practical evaluation if products passed previous evaluation or are currently supplying. If not completed or accepted, full evaluation (mandatory, desktop, practical) is required.

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Returnable documents: the completed pro forma Parent Company Guarantee (Option X4) and/or Performance Bond (Option X13) as specified in the contract. These must be reproduced exactly on the guarantor's letterhead without any changes to text or format, completed with the required details, and submitted to the Purchaser within the time stated in the contract.

The bidder must be able to provide the required Parent Company Guarantee (Option X4) and/or Performance Bond (Option X13) in the exact pro forma forms provided. The Performance Bond must be issued by a bank and must comply with the terms set out in the pro forma, including the expiry date and the maximum Guaranteed Sum.

The contract is for the supply, testing, delivery and offloading of Power Line Carrier (PLC) equipment on an 'as and when required' basis over a period of five (5) years for the National Transmission Company South Africa (NTCSA). The contract is governed by the NEC3 Supply Contract (SC3).

The contract may require a Parent Company Guarantee (Option X4) and/or a Performance Bond (Option X13). The Performance Bond is a demand guarantee issued by a bank, with a specified Guaranteed Sum (amount to be inserted). The bond is payable on written demand from the Purchaser, subject to the terms and conditions in the pro forma.

The contract may require a Parent Company Guarantee (Option X4) and/or a Performance Bond (Option X13). These are to be reproduced exactly on the guarantor's letterhead without any changes to text or format, and completed with the required details. The Parent Company Guarantee is an unconditional guarantee that the Supplier will provide the goods and services; if the Supplier fails, the parent company must cause the goods and services to be provided at no additional cost, or indemnify the Purchaser for any additional costs. The Performance Bond is a demand guarantee issued by a bank, with a specified Guaranteed Sum. The bank's liability is as principal, not surety, and is payable on written demand from the Purchaser, subject to the terms and conditions in the pro forma. The bond expires on the Expiry Date, after which it is invalid and unenforceable.

The Purchaser is NTCSA SOC Ltd (reg no: 2021/539129/30), a state-owned company with registered office at Megawatt Park, Maxwell Drive, Sandton, Johannesburg. The goods are Power Line Carrier Equipment. The services are Supply, Testing, Delivery and Offloading of Power Line Carrier (PLC) Equipment.

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No explicit eligibility criteria are stated in the extracted document. Bidders must be able to comply with the NEC3 Supply Contract conditions, including providing a performance bond (10% of contract value) if applicable, and must accept the liability and insurance provisions. B-BBEE status changes must be disclosed. The contract requires adherence to South African law and dispute resolution procedures.

Supply, testing, delivery and offloading of Power Line Carrier (PLC) equipment on an "as and when required" basis over a period of five (5) years for National Transmission Company South Africa (NTCSA). The goods are Power Line Carrier Equipment. The services include supply, testing, delivery and offloading. Delivery dates are as per Purchase Order. The Supplier must submit a first programme within 1 week after receipt of Purchase Order, and revised programmes within 1 week after each additional Purchase Order. The defects date is 2 years after delivery per Purchase Order; defect correction period is 2 weeks; defects access period is 2 weeks.

The Goods Information is in Part 3: Scope of Work and all documents and drawings to which it makes reference. The Supply Requirements are in Annexure A to this Contract Data. The Supplier must comply with the Purchaser's Asbestos Standard 32-303: Requirements for Safe Processing, Handling, Storing, Disposal and Phase-out of Asbestos and Asbestos Containing Material.

X1: Price adjustment for inflation - base date for indices is one-month prior tender closing date. The latest/ruling index used for CPA calculation will be aligned to delivery dates. X3: Multiple currencies - payment in other currencies to foreign bank account, SARB approved CFC account, or alternative method agreed before contract date. X7: Delay damages - 0.1% per day to a maximum of 15% per Purchase Order. X13: Performance bond - 10% of total contract value.

Payment is made within 60 days from delivery date and fulfilment of invoicing and payment requirements. The currency of the contract is South African Rand (ZAR). Interest on late payments is at the publicly quoted prime rate of Standard Bank of South Africa (for ZAR) or LIBOR (for other currencies). Price adjustment for inflation applies with base date one-month prior to tender closing. Delay damages are 0.1% per day to a maximum of 15% per Purchase Order. A performance bond of 10% of total contract value is required. The Supplier's liability for indirect or consequential loss is limited to R0.0. Liability for loss/damage to Purchaser's property is limited to applicable deductibles (R25m for Generation, R7.5m for NTCSA, R1m for Distribution). Total liability is limited to total of Prices per Purchase Order, with additional excluded matters (property damage, death/injury, IP infringement) not limited. End of liability date is 3 years after delivery.

The contract is governed by the law of the Republic of South Africa. The language is English. The period for reply is 5 working days. The Supplier must not cede, delegate or assign any rights or obligations without written consent. Joint ventures are jointly and severally liable. The Supplier must notify the Purchaser of any change in B-BBEE status within seven days and submit an updated verification certificate within thirty days. The Supplier must comply with all applicable health, safety and environmental laws and regulations. The Supplier must provide insurances as stated in Insurance Table A. Asbestos management: removal and disposal of asbestos must be done by a registered asbestos contractor at the Purchaser's expense.

Z3: Where a change in the Supplier's legal status, ownership or business composition results in a change to B-BBEE status, the Supplier must notify the Purchaser within seven days, submit updated verification certificate within thirty days. If B-BBEE status has decreased, the Purchaser may re-negotiate or terminate. Failure to notify may constitute a reason for termination.

Z6: The Supplier must take all reasonable precautions to maintain health and safety of persons, comply with all applicable health & safety laws and regulations, and ensure subcontractors and employees comply. Z15: Asbestos management - the Purchaser ensures ambient air conforms to prescribed standards, OEL for asbestos is 0.2 fibres/ml as 4-hour TWA, short-term exposure limit 0.6 fibres/ml as 10-minute TWA. The Supplier may perform parallel measurements. If asbestos is identified, risk assessment and control measures are implemented. Supplier's personnel may stop work and leave contaminated area until declared safe. Removal and disposal of asbestos is done by a registered asbestos contractor at the Purchaser's expense.

Z6.2: The Supplier must comply with all applicable environmental laws and regulations and ensure subcontractors and employees comply.

Z14: Nuclear Liability - The Purchaser is operator of Koeberg Nuclear Power Station and is solely responsible for nuclear damage, indemnifies the Supplier, waives rights of recourse except for unlawful intent or unauthorized presence.

{"closingDate":"01 APRIL 2026"}

Construction All Risks Contract Works

The tender is for the supply, testing, delivery and off-loading of Power Line Carrier (PLC) equipment. The document is an annexure (G1) containing the SBD 6.2 Declaration Certificate for Local Production and Content for designated sectors.

Closing time: 12:00 (per the document, the closing date is 2026-09-30T10:00:00.000Z in the tender record, but the document states 12:00 as the time for SARB exchange rate publication; no separate closing time is stated in the document).

Returnable documents: SBD 6.2 Declaration Certificate for Local Production and Content, and Annex C (Local Content Declaration: Summary Schedule). Both must be submitted by the stipulated deadline; failure to do so disqualifies the bid. The declaration must be signed by the Chief Financial Officer or another legally responsible person nominated in writing by the Chief Executive or senior manager; this obligation cannot be delegated to an external representative or third party.

Bids are subject to the Preferential Procurement Regulations, 2022 under the PPPFA. The bid must meet the stipulated minimum threshold for local production and content for designated sectors. The local content percentage is calculated per SATS 1286:2011. Incorrect or unverifiable local content data may result in remedies under Regulation 9.1 of the Preferential Procurement Regulations, 2022.

The tender is for the supply, testing, delivery and off-loading of Power Line Carrier (PLC) equipment. The document does not specify quantities, technical standards, or service levels beyond the local content requirements.

The bid price must be stated excluding VAT. Imported content must be converted to ZAR using the SARB exchange rate at 12:00 on the advertisement date. The local content percentage is calculated per SATS 1286:2011 using the formula LC = [1 - x/y]

• 100. The declaration must include bid price excluding VAT (y), imported content (x), and the local content percentage. If the bid covers multiple products, local content percentages for each product must be provided.

Bid price must be stated excluding VAT. Imported content must be converted to ZAR using the SARB exchange rate published at 12:00 on the date of advertisement of the bid. Bidders must submit proof of the SARB exchange rates used. The local content percentage is calculated as LC = [1 - x/y]

• 100, where x is imported content in Rand and y is bid price excluding VAT.

SBD 6.2 Declaration Certificate for Local Production and Content: must be completed and submitted. Annex C (Local Content Declaration: Summary Schedule): must be submitted at the stipulated deadline. Declarations D and E (supporting schedules) must be completed and kept for verification for at least 5 years. The successful bidder must continuously update Declarations C, D and E with actual values for the contract duration. Local content must comply with SATS 1286:2011. The bidder must not subcontract in a manner that reduces local content below the stipulated minimum threshold.

The contract is subject to the General Conditions, Definitions, and Directives on Local Content as prescribed by the DTIC. The bidder must not subcontract in a manner that reduces local content below the stipulated minimum threshold. If challenges arise in meeting the minimum threshold after award, the DTIC must be informed for verification and directives.

The bid is subject to the Preferential Procurement Regulations, 2022 under the PPPFA. Incorrect or unverifiable local content data may result in remedies under Regulation 9.1.

NTCSA SOC Ltd, Megawatt Park, Maxwell Drive, Sunninghill ext.3, Sandton, Republic of South Africa. Postal address: P O Box 1091, Johannesburg 2000. Telephone: +27 11 800 .... (incomplete in document). No contact person or email stated.

The only returnable document stated is the Non-Disclosure Agreement (NDA), which must be signed and returned with the tender. The NDA binds the bidder to keep all disclosed information confidential and to use it only for the project. No other submission instructions are stated in this document.

No evaluation criteria are stated in this document. The only requirement is that the NDA must be signed and returned.

The project involves the supply, testing, delivery and off-loading of Power Line Carrier (PLC) Equipment. No further technical details are provided in this document.

The NDA must be signed by a duly authorised representative of the bidder. For NTCSA, the signatory must be no lower than an E-Band Manager. No other compliance requirements are stated.

The Non-Disclosure Agreement (NDA) between NTCSA and the bidder governs the handling of confidential information. Key obligations: the bidder must keep all disclosed information confidential, use it only for the project, and protect it with at least a reasonable standard of care. The NDA does not create a business relationship or obligation to contract. It lasts for 3 years after termination of the relationship. Breach requires remedy within 7 business days of written notice, failing which the disclosing party may seek legal remedies including urgent proceedings and damages. The bidder must return or destroy confidential material on request within 7 business days. The NDA is governed by South African law. Neither party may assign rights without consent, though NTCSA may cede to its subsidiaries or divisions. No publicity without prior written consent.

Purchaser: NTCSA SOC Ltd, Megawatt Park, Maxwell Drive, Sandton, Johannesburg, 2199. The Purchaser's agent details are given in the Contract Data.

Submit the signed C1.1 Form of Offer and Acceptance, including the Schedule of Deviations (if any), within the validity period stated in the Tender Data. The offer must state the total price exclusive of VAT, VAT at 15%, and the total inclusive of VAT. The Purchaser accepts by signing the Acceptance part and returning one copy. Alternative tenders require a separate copy of the form. The tenderer must, within two weeks of receiving the completed agreement, contact the Purchaser's agent to arrange delivery of any required securities, bonds, guarantees, proof of insurance, and other documentation. Failure to do so constitutes repudiation.

No specific evaluation criteria are stated in the provided document. The offer is accepted by the Purchaser signing the Acceptance part of the Form of Offer and Acceptance.

Supply, testing, delivery and offloading of Power Line Carrier (PLC) equipment on an 'as and when required' basis over a period of five (5) years for National Transmission Company South Africa. The contract is for goods as described in Part C3 Scope of Work: Goods Information including Supply Requirements.

The contract includes testing of the PLC equipment as part of the scope. Specific quality standards are not stated in the provided document.

Pricing data is contained in Part C2 Pricing Data. The offer must state the total price exclusive of VAT, VAT at 15%, and the total inclusive of VAT. The inclusive total is for budgeting purposes only.

The offered total of the Prices exclusive of VAT, VAT at 15%, and the total inclusive of VAT must be stated. The inclusive total is for budgeting purposes only; actual amounts are assessed per the conditions of contract. Pricing data is contained in Part C2 Pricing Data. The tenderer must provide any securities, bonds, guarantees, and proof of insurance required by the conditions of contract.

The tenderer must submit a signed Form of Offer and Acceptance, accepting the Conditions of Tender and the contract terms. Any deviations must be recorded in the Schedule of Deviations; no other amendments are valid. The tenderer must provide any securities, bonds, guarantees, proof of insurance, and other documentation required by the conditions of contract within two weeks of receiving the completed agreement.

The tenderer offers to perform all obligations and liabilities of the Supplier under the contract, including compliance with all terms and conditions, for an amount determined in accordance with the conditions of contract identified in the Contract Data. Acceptance of the Offer forms an agreement between the Purchaser and the tenderer. Contract terms are contained in Part C1 (Agreements and Contract Data), Part C2 (Pricing Data), and Part C3 (Scope of Work: Goods Information including Supply Requirements), and any documents incorporated by reference. The agreement comes into effect on the date the tenderer receives a fully completed and signed original copy of the document, including the Schedule of Deviations.

The document is a user manual for the Eskom eTendering system, not the tender specification. It explains how suppliers register, log in, and upload tender documents electronically. It does not describe the goods or services being procured.

For system problems, contact the buyer responsible for the published tender. No specific contact names, emails, or phone numbers are provided in the document.

Submissions are made electronically through the Eskom eTendering system at https://eTendering.eskom.co.za. Bidders must register on the system and verify their email and OTP before submitting. Documents must be uploaded under the correct category (e.g., Technical, Commercial, Finance). Each file must not exceed 50MB and total uploads must not exceed 900MB. After uploading all required documents, bidders must click 'Finalize Submission' and then 'Finalise and Close Submission' to complete the bid. A confirmation email with a submission ID is sent; keep it for reference. Late submissions are not accepted.

The document does not specify the evaluation scoring split, minimum qualifying thresholds, or preference point system for this tender. Bidders must have a valid CSD number to access the eTendering system. No other evaluation criteria are stated.

The tender is for the supply, testing, delivery, and off-loading of Power Line Carrier (PLC) Equipment. No further technical details, quantities, or standards are provided in the document.

Bidders must have a valid CSD (Central Supplier Database) number to access the eTendering system. No other compliance requirements are stated.

The tender is for the supply, testing, delivery and off-loading of Power Line Carrier (PLC) equipment. The tenderer must complete and sign Form A to acknowledge and accept Eskom Supplier Quality Requirements as per specification 240-105658000 and ISO 9001 standard.

Returnable documents: the completed and signed Form A (240-68099512) acknowledging and accepting Eskom Supplier Quality Requirements per specification 240-105658000 and ISO 9001. The form must be fully completed, with all applicable clauses marked (X) or (-) as instructed. Failure to complete and sign the form may disqualify the bid.

Bidders must accept and comply with Eskom Supplier Quality requirements per specification 240-105658000 and ISO 9001 standard. The form requires the tenderer to indicate acceptance of pre-contract award quality requirements (Category 3 selected), post-contract award quality requirements, standard conditions, and ISO 9001 clauses. No scoring split or minimum qualifying thresholds are stated.

The tender is for the supply, testing, delivery and off-loading of Power Line Carrier (PLC) equipment. The tenderer must complete and sign Form A to acknowledge and accept Eskom Supplier Quality Requirements as per specification 240-105658000 and ISO 9001. The form includes pre-contract award quality requirements (Category 3 selected), post-contract award quality requirements (contract execution, supplier quality performance monitoring), standard conditions (Eskom rights of access, rights to information, preservation, quality audits, management of nonconformities, special processes), and ISO 9001 clauses (context, leadership, planning, support, operation, performance evaluation, improvement).

The tenderer must complete and sign Form A to acknowledge and accept Eskom Supplier Quality Requirements as per specification 240-105658000 and ISO 9001 standard. The form requires the tenderer to select the applicable quality category (Category 3 selected) and indicate acceptance of all listed quality clauses.

Invoice submission email (local): [email protected]. Invoice submission email (foreign): [email protected]. Physical address for invoices: National Transmission Company South Africa SOC Ltd, PO BOX 1091, JOHANNESBURG, GAUTENG, 2000.

Returnable documents: all must be completed, signed and submitted with the tender. The SDL&I implementation schedule must be completed and returned to the SDL&I representative for acceptance before contract award. The signed Acknowledgement of Eskom's OHS legal and other requirements form (Annexure B) and the signed Acknowledgement of NTCSA's Contractor Environmental Requirements Proforma must be submitted. Disqualification risks: failure to submit any required returnable form, or submission after the closing time.

Technical evaluation: factory acceptance testing (FAT) will be conducted before delivery, performed by the Purchaser's evaluating representatives at the Supplier's premises, consisting of a factory assessment, sample evaluation and routine testing if required. Compliance with NTCSA health and safety, environmental, and quality requirements is mandatory. SDL&I obligations: bidders must indicate the number of new jobs created and jobs retained as a direct result of the contract, and commit to skills development targets aligned with NTCSA and MICT SETA scarce and critical skills, including bursaries for TVET artisans and university students. Penalty of 2.5% of every invoice amount (excluding VAT) applies for failure to submit quarterly SDL&I performance reports or meet SDL&I obligations.

Scope: Supply, Testing, Delivery and Off-Loading of Power Line Carrier (PLC) Equipment on an 'as and when required' basis over a period of five (5) years for National Transmission Company South Africa. The PLC equipment must comply with Eskom's technical specification 240-106920490 Rev 3. Goods are to be manufactured as per the Purchaser's approved/accepted designs. Factory acceptance testing (FAT) must be conducted before delivery. The Supplier must provide operating manuals for all products supplied. The Supplier must maintain a record of all products supplied, including product designations, serial numbers, manufactured dates, part/model numbers, and firmware versions, available to the Purchaser at no charge on request. Supply requirements are detailed in Annexure A to the C1.2 SC3 Contract Data. Multiple Purchase Orders with their own delivery dates will be issued during the contract. The successful Supplier must propose process mechanisms and facilities to guarantee required technical and logistical support. The program must provide planned completion dates for delivery of goods and services. FOB goods are to be delivered and accepted at the Supplier's works by the Purchaser's representative, with three days' written notice. All goods and services, inclusive of all factory acceptance tests and quality inspections, are required by the delivery date. Successful completion of testing (including correction of defects) with sign-off by the Purchaser's representatives signifies product readiness for packaging and delivery. The Supplier must comply with all stipulations of the applicable Purchaser's site.

The Supplier must comply with the quality criteria and constraints specified in QM 58 240-105658000 Supplier Quality Management Specification during contract execution, as per ISO 9001 Quality Management Systems. Factory acceptance testing (FAT) must be conducted before delivery, performed by the Purchaser's evaluating representatives at the Supplier's premises, consisting of a factory assessment, sample evaluation and routine testing if required. Successful completion of testing (including correction of defects) with sign-off by the Purchaser's representatives signifies product readiness for packaging and delivery.

Payment: within one week of receiving a payment certificate from the Supply Manager (core clause 51.1), the Supplier must provide a tax invoice showing the amount due. The invoice must include: name and address of the Supplier and the Supply Manager; contract number and title; Supplier's VAT registration number; Purchaser's VAT registration number; description of goods and services per the Price Schedule; total amount excluding VAT, VAT, and total including VAT. Invoices must be submitted via e-invoice to [email protected] (local) or [email protected] (foreign). Invoices submitted in any other manner will not be considered for payment. Each PDF file must contain only one invoice, debit note, or credit note; emails may not contain more than one PDF file. Foreign invoices must be accompanied by shipping documents: tax invoice, commercial invoice, SARS Release notification, SAD 500, custom worksheet, bill of lading. If supporting documents are not furnished, payment cannot be made and the Supplier will be charged the cost of moving the Forward Exchange Cover (FEC) incurred by NTCSA. Bonds/guarantees: the form of any required bond or guarantee is given in Part 1 Agreements and Contract Data, document C1.3, Sureties. The Purchaser may withhold payment until the bond or guarantee is received and accepted.

Health and safety: comply with Purchaser Health and Safety requirements standards 32-136, the Occupational Health and Safety Act, and the Compensation for Occupational Diseases and Illness Act. Submit: signed Annexure B (Acknowledgement of Eskom's OHS legal and other requirements), OHS Plan addressing scope risks, Baseline OHS Risk Assessment (BRA) with methodology, valid Letter of Good Standing (COIDA or equivalent), and OHS Policy signed by CEO complying with OHS Act Section 7. Environmental: submit signed Acknowledgement of NTCSA's Contractor Environmental Requirements Proforma and an Environmental Management Plan addressing carbon emission reduction, waste management, emergency planning, identification of environmental aspects and impacts, and an Environmental (or SHE/SHEQ) policy signed by Company Owner/CEO/MD. Quality: comply with QM 58 240-105658000 Supplier Quality Management Specification, as per ISO 9001. SDL&I: complete and return the SDL&I implementation schedule before contract award.

The Supplier must comply with NTCSA health and safety requirements, including: Purchaser Health and Safety requirements standards 32-136; Occupational Health and Safety Act (current and subsequent revisions); Compensation for Occupational Diseases and Illness Act. Required submissions: signed Annexure B (Acknowledgement of Eskom's OHS legal and other requirements); OHS Plan addressing project/scope risks aligned with health and safety specification; Baseline OHS Risk Assessment (BRA) with methodology; valid Letter of Good Standing (COIDA or equivalent); OHS Policy signed by CEO complying with OHS Act Section 7.

The Supplier must comply with NTCSA environmental criteria and constraints. Required submissions: signed Acknowledgement of NTCSA's Contractor Environmental Requirements Proforma; Environmental Management Plan for the scope of work addressing as a minimum: mechanisms to lower carbon emissions (encouraged), waste management (reduction, re-use, recycling, disposal), emergency planning for environmental incidents, identification of environmental aspects and impacts (medium risk) with methodology, and an Environmental (or SHE/SHEQ) policy signed by Company Owner/CEO/MD committing to compliance with environmental obligations and environmental duty of care.

Contract duration: five (5) years from the start date, with multiple Purchase Orders issued as and when required. Insurance: refer to Clause 8 (Risks, liabilities, indemnities and Insurance) of C1.2 SC3 Contract Data. Contract change management: as per contract data. Bonds/guarantees: form per C1.3 Sureties; Purchaser may withhold payment until bond/guarantee received and accepted. Records of Defined Cost, payments and assessments of compensation events must be kept by the Supplier. Forward Exchange Cover (FEC) costs incurred by NTCSA for currency movement will be charged to the Supplier if applicable. Payment terms: as described in financial requirements. All formal communications must be confirmed with a written instruction. Original documentation must be kept by the Supplier.

Jobs: tenderers must indicate the number of new jobs created as a direct result of being awarded this contract, and confirm the number of jobs retained. Skills Development: specific targets addressing NTCSA's core, scarce and critical skills and MICT SETA scarce and critical skills. The supplier is required to develop skills development through spend by NTCSA to qualify in the occupations of Engineers/Technicians/Learnerships. Candidates must be currently unemployed graduates from school, technical, vocational, education and training (TVET) campuses and universities. SDL&I undertaking: Bursaries for TVET Artisans and University student bursary. Penalty of 2.5% of every invoice amount (excluding VAT) for failure to submit SDL&I performance reports every quarter or failure to meet SDL&I obligations. Monitoring and Reporting: Suppliers must submit quarterly reports in accordance with the Data Collection Template. NTCSA will review reports within 60 days and notify in writing if obligations not met. Corrective measures must be implemented before the following quarter, failing which Retention clauses will be invoked. Every contract must be accompanied by the SDL&I implementation schedule, completed and returned to the SDL&I representative for acceptance before contract award.

Buyer: Thandazile Timana

Business Unit: Transmission

SDL&I Officer: Hlekani Motjiyeng (Officer: SDL&I)

Returnable documents:

• Valid B-BBEE certificate issued by a SANAS accredited verification agency, or a sworn affidavit / CIPC affidavit (depending on annual revenue).
• SBD 6.2 Declaration Form and Annex C (Local Content Declaration – Summary Schedule) — mandatory for designated sectors.
• Proof of subcontract agreement(s) and CSD reports of subcontractors — required where mandatory subcontracting applies.
• Subcontractor B-BBEE certificate or sworn affidavit — required where mandatory subcontracting applies.
• SBD 5 form — required from international companies if foreign content is $5 million or more (NIPP undertaking).
• B-BBEE Improvement or Retention Plan — must be submitted within 30 days of signing the contract.
• SDL&I Implementation Schedule — must be completed and returned to the SDL&I representative within 28 days of contract award.

Disqualification risks:

• Failure to meet objective criteria (e.g., local content threshold) may lead to the second-ranked tenderer being recommended for award.
• Missing or invalid B-BBEE documentation may affect preference points or award.

Preference point system applies under PPPFA. Bidders must submit valid B-BBEE documentation to claim preference points.

Objective criteria (condition for award):

• Designated sector: Steel products and components for construction — local content threshold 100%. SBD 6.2 and Annex C mandatory.
• Mandatory subcontracting (contracts above R30 million): minimum 30% of contract value must be subcontracted to qualifying EME/QSE or cooperative (51% black-owned, including youth, women, disabled, rural/township, military veterans). Proof of subcontract agreement and CSD report required.

SDL&I objectives (not scored, but contractual obligations):

• B-BBEE improvement/retention plan: Level 4 must reach Level 3 by end of first year; Levels 5–8 or non-compliant must reach Level 4 by end of first year and improve one level per year thereafter.
• Local procurement content: NTCSA target 100%.
• Jobs: proposals for type and number of jobs created and retained.
• Skills development: targets — Electrical Technicians 3, Artisans 3. Excludes Eskom employees and registered learners; tenderer bears full cost.

Scope: Supply, testing, delivery and off-loading of Power Line Carrier (PLC) equipment.

Duration: 5 years.

Designated sector: Steel products and components for construction — local content threshold 100%.

Skills development: tenderers must propose training initiatives for Electrical Technicians (target 3) and Artisans (target 3). Candidates from all provinces, representative of population demographics. Excludes Eskom employees and registered learners. Tenderer bears full cost; may approach SETAs for grants and SARS for tax rebates.

Price Schedule: tender response must separate local and imported components. Local procurement content = total spending minus imported component. NTCSA target 100% local content.

Local procurement content: total spending minus imported component. Tender response must separate local and imported components as per the Price Schedule.

SDL&I penalty: 2.5% of invoice amount for failure to meet SDL&I obligations.

SDL&I performance security: 2.5% of every invoice (excluding VAT) retained for the duration of the contract; released upon receipt of SDL&I progress reports, fulfilment of obligations, and approved compliance report.

B-BBEE: Valid certificate (SANAS accredited) or sworn affidavit / CIPC affidavit depending on annual revenue. Conditions:

• Annual revenue ≤ R10 million: Exempted Micro Enterprise — sworn affidavit acceptable.
• Annual revenue ≤ R50 million: Qualifying Small Enterprise — must comply with QSE scorecard elements unless 51% black-owned, then sworn affidavit.
• Annual revenue > R50 million: valid B-BBEE certificate required.

Local content: SBD 6.2 Declaration Form and Annex C mandatory for designated sectors (steel — 100% local content).

NIPP: International suppliers with foreign content ≥ $5 million must complete SBD 5 as undertaking to DTI; minimum 30% local participation programme.

Subcontracting: For contracts above R30 million, mandatory 30% subcontracting to qualifying EME/QSE or cooperative. Proof of subcontract agreement, CSD report of subcontractors, and subcontractor B-BBEE certificate required.

Sworn affidavits must meet validity requirements (deponent details, ownership percentages, revenue, financial year end, B-BBEE status, empowering supplier status, signatures and commissioner of oath details).

B-BBEE improvement/retention plan: submit within 30 days of contract signing. Level 4 must reach Level 3 by end of first year; Levels 5–8 or non-compliant must reach Level 4 by end of first year and improve one level per year thereafter.

Local procurement content: NTCSA target 100%.

Jobs: proposals for type and number of jobs created and retained.

Skills development: targets — Electrical Technicians 3, Artisans 3. Excludes Eskom employees and registered learners; tenderer bears full cost.

Sworn affidavit validity: must include deponent details, ownership percentages, revenue, financial year end, B-BBEE status, empowering supplier status, signatures and commissioner of oath details.

SDL&I penalty: 2.5% of invoice amount for failure to meet SDL&I obligations.

SDL&I performance security: 2.5% of every invoice (excluding VAT) retained; released upon receipt of SDL&I progress reports, fulfilment of obligations, and approved compliance report.

Reporting: quarterly SDL&I reports to NTCSA using Data Collection Template. NTCSA reviews within 30 days; if obligations not met, corrective measures required before next report, failing which retention clauses invoked.

SDL&I Implementation Schedule: must be completed and returned to SDL&I representative within 28 days of contract award.

Objective criteria: must align with PPPFA clause 2(1)(f). If tenderer does not meet objective criteria, second-ranked tenderer may be recommended for award.

Designated sector: steel — 100% local content. SBD 6.2 and Annex C mandatory.

CIDB skills development: no compulsory training indicated.

NIPP: applies if foreign content ≥ $5 million; international manufacturers must commit to 30% local participation via SBD 5.

Mandatory subcontracting (contracts > R30 million): 30% to qualifying EME/QSE or cooperative; proof of subcontract agreement, CSD report, and subcontractor B-BBEE certificate required.

Market research: current suppliers from NTCSA Vendor Database; potential suppliers from CSD.

Preference point system applies. Bidders must submit valid B-BBEE documentation to claim preference points. SDL&I objectives are not scored but become contractual obligations.