GE-ALSTOM TRANSACTION Effective 2nd November 2015, GE acquired Alstom’s energy businesses. The Alstom content available on this site is for information purposes only.
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72 kV Instrument Transformers

Alstom Grid has manufactured tens of thousands HV instrument transformers since 1919.

Our customers recognize our top-of-the-line products for their long term robustness, safety
and reliability. 

This experience has been applied to the design and manufacture of the
compact 72 kV range, which uses the same insulation and manufacturing processes as all
our instrument transformers installed worldwide.

Metering – Protection


  • OSKF 72 Current Transformer (CT)
  • OTEF 72 Voltage Transformer (VT)
  • KOTEF 72 Combined Metering Unit (CMU)

Key Characteristics 

  • High quality paper-oil insulation
  • Compact design: less oil, less weight
  • Non-corrosive hardware
  • Oil expansion by painted stainless steel bellows
  • Porcelain or composite insulator
  • Leak-proof design and rugged construction for long service life
  • Weather-proof and environmentally resistance
  •  Compliance with IEC, ANSI/IEEE or equivalent standards. Other standard on request

Customer Benefits 

  • Totally leak-free
  • Compact design
  • Simple transport, easy installation
  • Stable accuracy over its lifetime
  • Maintenance free
  • Mineral oil-filled: no PCB