Distribution Transformer Repairs

ArmCoil’s distribution transformer repair services are performed at our Roodepoort facility in Johannesburg, South Africa.

Our distribution transformer repair services facility is accredited and managed in accordance with our ISO9001:2015 and ISO14001:2004 quality and environment systems.

ArmCoil complies to all SANS780 repair specifications for distribution transformers. We offer our repair services on the following all types of distribution transformers such as ONAN, ONAF and Dry Types.

ArmCoil complies to all SANS780 repair specifications for distribution transformers. We offer our repair services on the following all types of distribution transformers such as ONAN, ONAF and Dry Types.

  • ArmCoil’s work area is 6700m2 under roof, which is equipped with a maximum 50tonne overhead remote crane among others and lifting equipment. The facility and its content are insured together with 24hour security.
  • The distribution transformer repair services capabilities are: (but not limited to)
  • Full electrical and mechanical condition assessment and repair recommendations.
  • Full rewinding on all types of distribution transformers up to 33kV (33000V).
  • Localised coil and supply lead repair services available where possible.
  • Time and Temperature Controlled Curing Oven facilities.
  • Complete Test Bay Facility including all calibrated testing equipment which includes:
  • No Load Testing or routine testing.
  • Load Testing.
  • Complete distribution transformer Temperature Stabilising Testing.
  • Efficiency comparison testing.
  • Oil sampling and testing in accordance to SANS555.
  • Full voltage testing.
  • Ratio testing.
  • SFRA testing.
  • Distribution transformer core repairs and replacement services.
  • Cooling upgrades and redesign.
  • Sandblasting and respray facility.
  • Mechanical repairs and upgrade of distribution transformer.
  • Radiator replacement and repairs.
  • Conservator replacement and repairs.
  • Main tank replacement and repairs.
  • LV & HV Box replacement and repairs.
  • All type of auxiliary parts replacement and servicing.
  • Transformer pressure testing for leaks.
  • Mechanical design and manufacturing of distribution transformer for upgrade purposes.
  • Factory acceptance testing services (FAT) on distribution transformers.
  • OEM assembly and testing of distribution transformers.