过电流试验装置
Overcurrent test equipment
过电压过电流
Thyristor switch overvoltage and overcurrent in converted course
过电压与过电流
over-current and over-voltage
过电流继电器
overcurrent relay
maximum relay
current-overload relay
over current relay
OCR
Box type power distribution substation
后备过电流保护
backup over-current protection
开关型过电流保护
switching over current protection
零序方向过电流保护
zero-sequence direction over current protection
瞬时电磁式过电流继电器
instantaneous electromagnetic overcurrent relay