多数断路器控制回路中,跳闸线圈和断路器辅助接点(用于在断路器跳闸后切断电流)相串联,以防止对弱电接点造成损害。这可以通过监视断路器辅助接点(断路器跳闸后打开)来实现。但是,由于断路器辅助接点状态改变和跳闸回路电流中断之间存在时差,该方案可能作出错误操作。启动接点最可靠的保护方法是直接测量跳闸回路中的电流,用测量得出的参数去控制复归启动继电器。这个保护方案通常被称为跳闸封锁。
RELIANCE ELECTRIC 0-51377-35 MOTHER BOARD 05137735
RELIANCE ELECTRIC 0-54341 RECTIFIER SUPRESSOR PRINTED
RELIANCE ELECTRIC 0-51811-1 TESTER CARD VOLTMETER
Reliance Electric 0-51865-9 0518659 CLDK Current Loop
Reliance Electric 0-52874-1 VTAB Circuit Board 0528741
RELIANCE ELECTRIC 0-57413-1
Refurbished Reliance Electric 0-52853 ISCA Drive Module
Reliance Electric 0-57403-E 115 VAC High Output RE
RELIANCE ELECTRIC O-52861 0-52861 DCGA CARD
Reliance Electric 0-51378-19 Gate Coupling Board
RELIANCE ELECTRIC FIELD LOSS CIRCUIT BOARD 230 VOLT 0-51426-1
RELIANCE ELECTRIC TSTB VOLTMETER CARD 0-51811-1
RELIANCE ELECTRIC TIMED VOLTAGE REFERENCE MODULE 0-52014
RELIANCE ELECTRIC 0-51844 USPP 051844
RELIANCE ELECTRIC 0-52711-3 USPP 0527113