Friday, 17 May 2013

Differential Protection of 11KV MetalClad Switchgear according to WAPDA Specification P-44:96


  • All incoming panels shall be provided three additional CTs for differential protection.
  • The differential protection zone of power transformers is required to trip the 11KV incoming breakers. For this purpose the incoming panels of 12.5KA rating shall be provided with an additional DC operated trip coil.

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