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Detail SPAJ 140 C Overcurrent And Earth-fault Relay ABB
Protection Relay The combined overcurrent and earth-fault relay SPAJ 140 C is intended to be used for the selective short-circuit and earth-fault protection of radial feeders in solidly earthed, resistance earthed or impedance earthed power systems. The integrated protection relay includes a phase overcurrent unit and an earth-fault unit with flexible tripping and signalling facilities. The overcurrent and earth-fault relays can also be used inother applications requiring single-, twoor three-phase overcurrent protection and nondirectional earth-fault protection. The combined overcurrent and earth-fault relay also features circuit breaker failure protection.
