Furness Transformers

Main Features

  • Transformers are designed for induction furnace, arc furnace; submerged arc furnace application
  • Magnetic circuit – CRGO silicon steel lamination
  • Electric circuit – electrolytic grade 99.9% pure copper with transposition in LV coil for current sharing in parallel conductors
  • Dielectric circuits – electric grade press paper, boards and mineral oil
  • Thermal circuit – adequate cooling ducts are provided radially; axially for the smooth flow of oil internally. Radiators cooling banks are provided for natural air cooling ONAN; additional fans for ONAF cooling.High current transformers are provided with OFW cooling

Specific Features

  • Designed for trouble-free performance during surges & frequent short circuits
  • Design conforms to Indian / International standards
  • High current at low voltages
  • Designed to withstand electrical impulses and thermal and dynamic stresses
  • Optimum utilization of active materials for compactness
  • Modern manufacturing techniques ensure cost effectiveness, reliability and a long trouble-free performance


  • 3 phase, 50 Hz in voltages of 11kV, 22kV & 33kV
  • Off-circuit tap changer to provide any range as per standards
  • On load tap changer to provide any range as per standards
  • Class A, uniform/non-uniform insulated
  • Any vector group as per standards
  • Duty cycle as per standards
  • Painting as per Indian / International standards
  • Both HV & LV side outdoor bushings or cable boxes
  • Cooling oil to water heat exchanger, radiators / fans.
  • Fittings as per Indian / International standards

Optional accessories

  • Winding temperature indicator and oil temperature indicator with remote indication
  • RTDs for winding temperature measurement

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