What is meant by sotf,lbb,power swing,pole discrepency,auto
reclose?



What is meant by sotf,lbb,power swing,pole discrepency,auto reclose?..

Answer / k.prakashchandra

sotf = switch on to fault ,lbb = local bus bar backup , pole
discrepancy = in 3 phase individually operated circuit
breaker ,all the three poles should close simultaneously
,otherwise there will be pole discrepancy .i.e, time lag
while closing .

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