Our corrugated high voltage transformers incorporate state-of-the art high tension engineering, optimally designed to give you long life with high efficiency & reliability.

Corrugated transformers are manufactured in our comprehensive in-house facilities, with full control on raw-material, design & manufacturing processes.


  • Copper wound corrugated transformer upto 2500 KVA in 33/0.433 as well as 11/0.433 KV configurations
  • Aluminum wound corrugated transformers up to 250 KVA
  • Star rated corrugated transformers up to 4 star ratings


  • Off-circuit tap changer to provide+5% to – 10%.
  • On-load tap changer to provide +7% to – 21% taps in steps of 1.75%.
  • Rated Power from 315kVA to 2.5 MVA
  • Rated insulation level up to 36 kV (other rated level on request)
  • Rated frequency 50 or 60 Hz
  • Mineral oil insulating liquid
  • Hermetically sealed or breathing with conservator
  • Naturally cooled (ONAN) or air forced (ONAF) on request
  • Conventional losses or high efficiency ranges
  • Off-Circuit Tap Changer (OCTC) or On-Load Tap Changer (OLTC) on request
  • Low flammability dielectric liquids (Ester Oil – Natural or synthetic)
  • Compact design
  • Rectifier feeder (Rectifier Transformers range)

Uses of Corrugated Transformers

  • For Pre-fabricated Substations, for compact dimensions and small installation space. It can be installed very near to loads, ie. building, etc and it ensures trouble free operations without interruptions.
  • Installations cost are negligible.
  • For Industrial purpose with advantage of space saving and better reliable cooling.

For any frequently asked questions