Medium Voltage Outdoor Resin Cast Current Transformer

Medium Voltage Outdoor Resin Cast Current Transformers of single core for metering purpose are commonly used. Di-electric strength of the oil-impregnated paper insulation is preserved by hermetic sealing of the transformer.

Resin Cast Outdoor Current Transformer

A current transformer so arranged that it act as a support for the conductor in the primary circuit. These transformers are of compact design with high mechanical and electrical properties.


  • Hydrophobicity transfer and recovery
  • Good mechanical properties
  • Good dielectric properties
  • Very good thermal shock resistance
  • High erosion resistance under UV radiation
  • High tracking and arc resistance
  • Extended insulation life-time
  • For measuring and protection with one or two secondaries only
  • Most standards available (IEC & IS)
  • Highest voltage range for the equipment: 3.6 - 36 kV
  • Rated primary current range: 10 - 600 A
  • Rated short time thermal current: 25 kA /1 sec
  • Rated secondary current: 1 or 5 A
  • Frequency: 50 or 60 Hz


Outdoor cycloaliphatic epoxy resin cast instrument transformers for medium voltage applications required to perform under humid and service climatic conditions. Our product specification is as follows:

Applications Metering, Protection
Construction Outdoor resin cast
System Voltage Upto 33kV
Type Single/three phase, multi-core/ratio
Accuracy class
Metering 0.2, 0.5, 1.0
Protection 3P
Primary Upto 33KV
Secondary 110V AC


  • Oil / Paper Insulation.
  • High insulation reliability.
  • Metal parts corrosion resistive.
  • Porcelain bushing suitable for polluted atmosphere.
  • Easily accessible to LV terminals.


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