Distribution Transformers and MV Miniature Substation Repairs

ArmCoil takes pride in delivering exceptional transformers and MV miniature substation repairs services at our state-of-the-art facility in Roodepoort, Johannesburg, South Africa.

ArmCoil strictly complies with ISO management accreditations, IEC & SANS780 specifications for transformers and MV miniature-substations, offering repair services for various equipment types, including ONAN, ONAF, KNAF and Dry Types.

Spanning over 8500 m2 under roof, our work area is equipped with a maximum 50-tonne overhead remote crane, among other cutting-edge lifting equipment. The facility and its contents are comprehensively insured, with 24-hour security ensuring the utmost protection.

ArmCoil’s commitment to excellence is evident in our meticulous approach to distribution transformer and mini-substation repairs, offering comprehensive services with a focus on quality, reliability, and longevity.

Capabilities of our Distribution Transformer & MV Miniature-Substation Repair Services Include:

Full Condition Assessments

Comprehensive evaluations with detailed repair recommendations/scope of works.

Failure Reports.

Root cause of failure reports.

Full Rewinding

Expert rewinding services on all types of distribution transformers up to 132 000V (132kV).

Localised Coil & Supply Lead Repair

Targeted repair services where feasible.

Time & Temperature Controlled Curing Oven Facilities

Ensuring precision in the repair process.

All ovens are calibrated.

Complete Test Bay Facility

Equipped with Calibrated Testing Equipment For:
• No Load Testing or Routine Testing.
• Load Testing.
• Temperature Stabilising Testing.
• Efficiency Comparison Testing.
• Oil Sampling and Testing in Accordance with SANS555.
• Full Voltage Testing.
• Ratio Testing.
• SFRA Testing.
• LV, MV Equipment Testing, Including Lighting Compartments.
• Special tests are available on request.