Tender Summary: Construction of New Morula View Substation

Objectives

The primary objective is to deliver a fully functional electrical substation to improve power supply reliability and expand distribution capacity for the Morula View area. The project aims to establish a permanent infrastructure asset that safely steps down high-voltage electricity for municipal distribution, supporting current and future community energy demands.

Scope of Work

The scope covers complete project delivery, including planning, procurement, construction, testing, and handover. Key components include:

• Site preparation, earthworks, and civil foundations
• Erection of control buildings, transformer pads, and switchgear enclosures
• Installation of two 20 MVA power transformers
• Deployment of 33 kV and 11 kV switchgear, circuit breakers, and surge arrestors
• Integration of protection relays, SCADA/control systems, and metering
• Construction of earthing grids, lightning protection, and perimeter security fencing
• Access road development, drainage, and site reinstatement
• Pre-commissioning checks, energisation, and formal handover to the municipality

Technical Requirements

All works and materials must adhere to applicable South African National Standards (SANS), municipal engineering specifications, and grid-code compliance. Core technical parameters include:

• Transformer configuration: Two units, each rated at 20 MVA
• Voltage levels: Primary 33 kV, secondary 11 kV
• Equipment must withstand local environmental conditions and meet IP/NEMA protection ratings
• Full compliance with occupational health, safety, and environmental management plans
• Submission of factory acceptance test certificates, calibration reports, and as-built documentation
• Seamless integration with existing municipal network protection schemes

Skills and Experience Requirements

Bidders must demonstrate technical competence through qualified personnel and verifiable project history, typically requiring:

• Professional engineers registered with ECSA (Electrical, Civil, and Structural disciplines)
• Certified project managers with prior experience in utility-scale infrastructure delivery
• Licensed high-voltage electricians, instrument technicians, and commissioning specialists
• Health, safety, and quality management professionals familiar with construction site regulations
• Contractors with a proven track record in designing and constructing similar substations

Clarification of Technical Terms

2 x 20 MVA 33 kV/11 kV: This specifies the central electrical equipment. "2 x 20 MVA" indicates two independent transformer units, each capable of handling 20 megavolt-amperes of apparent power. "33 kV/11 kV" denotes the voltage transformation ratio: the substation will receive incoming transmission power at 33 kilovolts and step it down to 11 kilovolts for safe local distribution. This dual-unit setup provides operational flexibility and redundancy, ensuring continuous power supply even if one transformer undergoes maintenance.

Note on Provided Documentation

The supplied document is an official erratum issued by Mogalakwena Local Municipality. It exclusively corrects administrative dates for the compulsory briefing meeting and tender submission deadline. Comprehensive technical specifications, pricing templates, evaluation criteria, and contractual conditions are detailed in the full tender package, which must be acquired separately.