Rơle bảo vệ quá dòng chạm đất, ABB-SPAJ-140-C-AA-Over-Current-and-Earth-Fault-Relay

Multipurpose Relay for Applications where non-directional overcurrent and earth-fault protections are needed, e.g. - feeder protection - transformer protection - back-up protection Application areas, e.g. - power utilities - industries - marine and offshore installations

Protective Functions Three-phase, low-set phase overcurrent protection with definite time or inverse definite minimum time (IDMT) characteristic Three-phase, high-set phase overcurrent protection with instantaneous or definite time function Low-set, non-directional earth-fault protection with definite time or inverse definite minimum time (IDMT) characteristic High-set, non-directional earth-fault protection with instantaneous or definite time function Circuit-breaker failure protection