Local, Series-Connected Interrupters Enhance System Reliability

Abstract—Circuit switchers are designed for, tested, and used in substation protection schemes to clear transformer internal faults as well as back-up protection of the transformer secondary circuits. If the circuit switcher fails to successfully clear the fault, it is common for a circuit breaker, upstream from the substation, to perform the interruption. The utility may use a distance...(continued)

  • by Larry Taylor, P.E., Charles Shih, P.Eng., and Tom Speas
  • May 24, 2008

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