Earth-leakage protection relay PCS-985RE

The PCS-985RE is mainly designed for rotor earth fault by external voltage injection. Because of adopting self-adaptive active switching technology, The PCS-985RE can still supervise rotor insulation even if no excitation voltage is applied. It has high sensitivity and the same sensitivity to any one-point earth fault within the rotor winding. The automatic and manual control function to electric brush ensure rotor earth fault protection can be applied to the brushless exciter units. • Self diagnostic • External DC power supply monitoring and alarming • GPS clock synchronization • Fault recorder • IEC61850 MMS & GOOSE for station bus • IEC60870-5-103 protocol • MODBUS protocol