Substation Equipments

Current Transformers (CT)

OSKF

Oil-Insulated Current Transformers (CT) up to 800 kV

GE’s OSKF have been designed for a 30 year lifetime and, thanks to the profound technical concepts, many well out-live this service life. The oil is hermetically sealed from the air by a stainless-steel diaphragm assembly and all external parts are of corrosion-resistant material.

Customer Benefits

  • Special accuracy classes for protection: TPS, TPX, TPY, TPZ, PR
  • World leader in seismic solutions
  • Expertise in 800 kV
  • Stable accuracy over its lifetime
  • Maintenance free
  • Design verified by extensive field experience
  • Protection against bursting

Characteristics

  • 72.5 to 800 kV
  • Up to 5,000 A
  • In short-circuit: up to 120 kA1” (Isc dyn: 324 – kA peak)
  • Secondary cores: up to 8
  • Oil expansion by stainless-steel bellows
  • Oil level indicator
  • Available high and extended range accuracy design (ERCT)
  • Compliance with IEC and IEEE or equivalent standards
  • DC current transformers available