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

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

瞬时电磁式过电流继电器  instantaneous electromagnetic overcurrent relay

直流过流继电器  dc 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

电力网继电器继电器  Relay; network relay

超高速继电器  ultra high speed relay

感应环式高速继电器  induction-ring type high-speed relay

高速继电器  high speed relay; fast relay

减速器继电器阀  retarder relay valve

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

定向继电器  directional relay