摘要:1 故障现象 某1号风机采用两相式GL过流继电器保护,电路图如图1、图2所示。图1、图2中QF为油断路器TA1、TA2、TA3为电流互感器,KA1、KA2为GL过流继电器,YT为跳闸线圈。整定后空载试机,发现速断动作,不能工作。
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