Supply and Installation of 132kv and 66kv Primary Bushings for 3kv Dc Traction Transformers and Refurbishment of Main and Auxiliary Transformers at Muldersvlei, Huguenot, Soetendal, Gouda, Sandhills, Hugo,quary and Leeu-gamka Substations

TFR/2025/10/0002/109899/RFP

2025-11-10 10:00

Tender Closed on: 2025-12-11 11:00

Transnet SOC Ltd

5 EP

Electrical Engineering, Electrical Equipment and Supplies, Manufacture of Electrical Equipment, Mechanical Engineering, Painting, Specialised Equipment, Supply and Installation of Machinery and Equipment, Transformer Oil Supplies and Processing, Transformer Supplies, Installation and Maintenance

Beaufort West, Bellville, Gouda, Western Cape

Transnet SOC Ltd

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Title: TFR/2025/10/0002/109899/RFP
Tender Number: TFR/2025/10/0002/109899/RFP
Description: SUPPLY AND INSTALLATION OF 132KV AND 66KV PRIMARY BUSHINGS FOR 3KV DC TRACTION TRANSFORMERS AND REFURBISHMENT OF MAIN AND AUXILIARY TRANSFORMERS AT MULDERSVLEI, HUGUENOT, SOETENDAL, GOUDA, SANDHILLS, HUGO,QUARY AND LEEU-GAMKA SUBSTATIONS
Closing Date: 2025-12-11 11:00
Briefing Date: 2025-11-10 10:00
Briefing Date Details: The Compulsory Tender Clarification Meeting will be conducted over two days : Day 1: Bidders meet at the Transnet Park Building, Robert Sobukwe Road, Bellville in the parking lot in front of the building on 10 November 2025 at 10:00 and then move to the following sites: • Muldersvlei – 22km from Bellville • Huguenot – 43km from Bellville • Soetendal – 68km From Bellville • Gouda – 94km from Bellville • Sandhills – 97 km from Bellville Day 2: Bidders meet by the Total garage in Touwsrivier on 11 November 2025 at 10:00 and then move to the following sites: • Hugo – 7km from Touwsrivier • Quarry – 19km from Touwsrivier • Leeu- Gamka – 208km from Tousrivier [Tenderers to provide own transportation and accommodation]. The Compulsory Tender Clarification Meetings will start punctually, and information will not be repeated for the benefit of Tenderers arriving late. Contact Xolile Damba for directions on cell phone no. 083 781 7376 and Fortunate Dayi on 083 795 1715
Tender Type: RFP
Contact Person: Johanna Swart Transnet Freight Rail CPT
Contact Person Email: [email protected]
Location Of Service: VARIOUS
Name Of Institution: TFR
Tender Category: Goods & Services

Tender Summary

Objectives

The primary objective of this tender is to supply and install 132kV and 66kV primary bushings for 3kV DC traction transformers, as well as to refurbish main and auxiliary transformers at multiple substations (Muldersvlei, Huguenot, Soetendal, Gouda, Sandhills, Hugo, Quary, and Leeu-Gamka). The project aims to restore transformer functionality, improve network availability, and ensure high-quality, safe, and compliant installation and refurbishment of electrical equipment.

Scope

The scope includes:

  • Supply and installation of 132kV and 66kV primary bushings for 3kV DC traction transformers.
  • Refurbishment of main and auxiliary transformers at specified substations.
  • Preparation, testing, and commissioning of transformers.
  • Surface preparation, galvanizing, priming, painting, and corrosion protection of steelwork.
  • Handling, transportation, and safe installation of transformers and associated components.
  • Compliance with safety, environmental, and quality standards, including risk assessments and inspections.

Technical Requirements

The technical requirements specify that:

  • Transformers shall be designed for outdoor use, cooled naturally, and comply with IEC and SANS standards.
  • Design shall minimize harmonic disturbances, with primary windings star-connected and secondary windings configured for six or twelve-pulse rectification.
  • Provision for a tertiary winding for auxiliary transformers, rated at 50kVA, 400V 3-phase.
  • Temperature rise shall not exceed 65°C under continuous full load, with overload limits specified.
  • Voltage ratios, tap changers, and impedance shall meet specified standards, with manual, lockable tap changers.
  • Insulation levels, bushings, tank construction, radiators, fittings, and protective devices shall meet SANS and IEC standards.
  • Testing, inspection, and commissioning procedures shall be strictly followed, with type and routine tests conducted and certificates provided.
  • Corrosion protection, painting, and surface preparation shall adhere to specified standards, with galvanizing and coating systems applied appropriately.

Skills Requirements

The tenderer must demonstrate:

  • Proven experience in the supply, installation, and refurbishment of high-voltage transformers, including similar projects of comparable size and complexity.
  • Qualified personnel with relevant certifications, including electrical engineers, safety officers, and technical inspectors.
  • Capability to conduct detailed risk assessments, quality assurance, and testing in accordance with IEC, SANS, and Transnet standards.
  • Proper management and supervision teams, including project managers, safety officers, and technical specialists.
  • Compliance with health, safety, and environmental legislation, including ISO 9001 quality management systems.
  • Ability to produce detailed technical documentation, quality plans, and inspection reports.

Summary

This tender seeks a qualified and experienced contractor capable of delivering high-quality transformer refurbishment and installation services, adhering to strict technical, safety, and environmental standards, with proven project management and technical expertise in HV transformer systems.

This summary is AI generated. Download the tender documents for all the information.

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