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Outdoor Transformers

Outdoor Transformers

Ereva Transformers & Switchgear is a manufacturer and trader of supreme quality outdoor type potential transformers.

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  • They are designed to present a negligible load to the supply being measured and having an accurate current ratio and phase relationship to enable accurate secondary connected metering.
  • They are constructed by passing a single primary turn (either an insulated cable or an uninsulated bus bar) through a well-insulated toroidal core wrapped with many turns of wire.
  • This affords easy implementation, using the pass-through conductor as a single turn primary.
  • Direct measurement of voltage in high voltage system is not possible because of insulation of measuring instruments. It is also not possible to use direct voltage for the system protection purpose due to its high value and high insulation problem protective relays.
  • Therefore voltage transformers are used to step-down the high system voltage to low standard value accurately in proportion to their ratio.
  • It is easy to implement on high voltage bushings; secondary turn core and has a long operational life.

    • Outdoor Transformers

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