011 607 1700 support@mandc.co.za



Our transformer division consists of the transformer coil winding facility, capable of winding coils up to 7.5 MVA.

Full test facilities to perform all routine tests:

  • Insulation resistance
  • Voltage ratio and polarity
  • High voltage withstand test
  • Induced over voltage (inter-turn test)
  • Losses and impedance

A dedicated team backed up with extensive resources:

  • A skilled and experienced transformer team
  • The best quality materials and workmanship

A fully mobile site services team that collects, samples and analyses transformer oil samples via an independent SABS registered laboratory. The oil analysis results are used to make recommendations about further on-site maintenance, repairs or oil purification or replacement.

M&C Rustenburg has a 24/7 transformer field service department that can offer the following services:

Transformer oil sampling:


    • Reliable on-site oil sample collection and management
    • Oil sample testing and analysis by a SABS accredited laboratory
    • Sample testing for:

–  Dielectric strength

–  Moisture content
–  Acidity
–  Dissolved gasses

–  PCB testing with supply of labelling

–  Furanic testing (degradation of insulation)

    • All other testing requirements on transformer oil sampling
    • Managed results that are stored for future referencing and analysis
    • Detailed assessment reports on the transformer condition (oil leaks, paint condition and recommended repairs)
    • Feedback (records and reports) to customers in hard copy and electronically
    • On-site cleaning and painting of transformers
    • On-site transformer repair services including:

–  Transformer oil purification

–  Transformer oil replacement

–  Gaskets and oil seal replacement

–  Repair of oil leaks