电流极性比较继电器
current polarity comparison relay
感应圆盘式反比时限过载流继电器
induction disc type inverse-time overcurrent relay
弱电流继电器电路
low current relay circuit
插棒式过电流继电器
plunger overcurrent relay
串联过电流继电器
series over-current relay
电流平衡式差动电流继电器
current balance type current differential relay
负序电流继电器
negative sequence current relay
过电流继电器
current-overload relay
Box type power distribution substation
overcurrent relay
maximum relay
over current relay
OCR
活塞式过电流继电器
plunger type overcurrent relay