Power Transformer

Products & Services
Single Phase Pole/Pad Mounted

Three Phase Pole/Pad Mounted
Three Phase Pad Mounted with kiosk
Power Transformer
Furnace Transformer
Special Transformers
-Varying/Testing Transformer
-Earthing/Grounding Transformer
Transfopower designs a complete range of oil filled three phase pole mounted power transformers for a wide variety of commercial and industrial applications. These high quality transformers are available in a wide variety of ratings and accessory combinations with range of 400KVA upto 5000KVA and voltages upto 33KV in both ONAN and ONAF design configurations. 

High grade materials coupled with state of the art technology in our design and manufacturing, ensure reliable and cost effective transformer products customized to your system requirements.

Standard Features

  • Meets or exceeds current IEC, WAPDA, KESC or any other standards required by customer
  • 50 Hz operation
  • 50°C average winding rise
  • MV BIL 95 KV
  • LV BIL 2.5 KV
  • Mild Steel (MS) tank (optional corrugated tank) with welded lifting lugs
  • Mild steel MS Undercarriage with roller wheels
  • Conservator Tank with silicagel breather
  • Oil level gauge
  • Oil filling plug
  • State of the art powder coating on automatic plant provides superior corrosion protection and is aesthetically pleasing to the eye
  • Top cover mounted HV and LV porcelain bushings
  • Tin plated brass terminals for connection to copper
  • Tank ground provision through earthing terminal
  • Insulated cover for wildlife protection
  • Engraved nameplate (rating and diagram)
  • Conservator Tank with silicagel breather
  • Insulating oil as per IEC60296 standard
  • KVA rating on transformer
  • Medium-voltage taps with external top cover mounted tap changer
  • Protection from lightning through arcing horns (outdoor transformer)
  • Explosion vent
  • Drain valve

Optional features & accessories

  • Automatic pressure relief valve
  • High fire point fluid, such as silicone, hydrocarbon or vegetable fluids
  • Connectors for grounding
  • Oil/winding temperature indicator with/without contacts
  • Magnetic oil level guage with/without contacts
  • Buchholz relay
  • Stencils and labels according to customer requirements
  • Cable end box for HV and LV bushings
  • Low voltage wall mounted bushings


  • All transformers are tested in strict accordance with P10 standard following from IEC with test reports available by serial number

Routine tests are:

  • Leak test
  • Polarity and Phase relation
  • Resistance
  • No-load losses and impedance
  • Exciting current
  • Induced voltage
  • Ratio test
  • Power frequency test
  • Megger test