Power & Distribution Transformer Maintenance

ArmCoil’s Field Services department employs the necessary resources and equipment to ensure that our products are delivered, installed, commissioned and tested to the highest standards.

ArmCoil field services are ISO9001:2015 and ISO14001:2004 accredited.

The department offers a comprehensive range of field services for clients in Southern Africa and beyond.

ArmCoil Field Services offer a broad spectrum of medium voltage and associated applications and installations such as:

  • Power Transformer maintenance, upgrades and repairs
  • Distribution Transformer maintenance, upgrades and repairs
  • Miniature Substation maintenance, upgrades and repairs
  • Substation and mobile substation maintenance, upgrades and repairs
  • Medium Voltage Electric Motor maintenance, upgrade and repairs.
  • Switchgear maintenance, upgrade or repairs of gas, vacuum and oil types.

ArmCoil Field Services offer you the following detailed services such us:

On all types of medium voltage electric motors up to and including 10MW @ 11kV:

  • On-site fault finding while in situ.
  • On-Site Condition Analysis on all types of DC, MV and HV Electric Motors.
  • Repairs and replacement on all types of bearings and bearing applications.
  • Stator and rotor Patching or localized Rewinding repairs.
  • Stator and Rotor On-site rewinding.
  • Stator and rotor supply lead repairs or replacement.
  • Installation and Alignment assistance.
  • On-site trim balancing services.
  • Servicing and replacement of carbon brushes, brush gear and associated parts.
  • Servicing and repairs to sliprings, commutators i.e.: skimming, undercutting and bevelling.
  • Thermography scanning, “hot spot” or heat signature identification.
  • Vibration analysis
  • Temperature analysis
  • Electrical testing i.e..: Megger, Interturn, P.I, winding resistance

On all types of Power, Distribution Transformers up to 100MVA @ 132kV:

  • On-site fault finding.
  • On-Site Condition Analysis on all types of transformers, including oil sampling.
  • Removal and rigging of transformers.
  • Installation and commissioning of transformers.
  • Standard and abnormal transport services.
  • Transformer oil replacement and safe disposal of old oil services.
  • Transformer oil purification services.
  • Total transformer regasketing.
  • On-site cleaning and spray-painting of transformers including paint thickness testing.
  • Transformer oil leak identification and repairs i.e. Radiators, tank and conservator.
  • On-site radiator flushing and refurbishment to remove blockages etc.
  • Transformer thermography auditing for heat signature identification.
  • Transformer auxiliary protection upgrades and modifications.
  • Transformer online gas monitoring upgrades and modifications.
  • Transformer LV and HV Bushing repairs and replacement (stock available)
  • OLTC maintenance and repairs including parts replacement.
  • On-Site transformer routine testing, SFRA also available.
  • Accredited oil laboratory utilized for all sampling results.
  • Wide variety of spares in stock.

On all types of miniature substations up to 3150kVA @ 11kV:

  • On-site fault finding while in situ.
  • On-Site Condition Analysis on all types of DC, MV and HV Electric Motors.
  • Repairs and replacement on all types of bearings and bearing applications.
  • Stator and rotor Patching or localized Rewinding repairs.
  • Stator and Rotor On-site rewinding.
  • Stator and rotor supply lead repairs or replacement.
  • Installation and Alignment assistance.
  • On-site trim balancing services.
  • Servicing and replacement of carbon brushes, brush gear and associated parts.
  • Servicing and repairs to sliprings, commutators i.e.: skimming, undercutting and bevelling.
  • Thermography scanning, “hot spot” or heat signature identification.
  • Vibration analysis
  • Temperature analysis
  • Electrical testing i.e..: Megger, Interturn, P.I, winding resistance