定向过流继电器
directional overcurrent relay
反向过流继电器
reverse overcurrent relay
插棒式过电流继电器
plunger overcurrent relay
串联过电流继电器
series over-current relay
过电流继电器
overcurrent relay
over current relay
Box type power distribution substation
current-overload relay
maximum relay
OCR
活塞式过电流继电器
plunger type overcurrent relay
瞬时电磁式过电流继电器
instantaneous electromagnetic overcurrent relay
中性过电流继电器
neutral over-current relay
弱电流继电器电路
low current relay circuit
感应环式高速继电器
induction-ring type high-speed relay
电子管功率定向继电器
electronic valve type power directional relay
定向过流电驿
Alkane with straight chain