Voltage protection relay PCS-9631

overloadcurrentIEC

The PCS-9631 relay is a comprehensive protection, control and monitoring unit for shunt capacitor bank on solidly grounded, impedance grounded, Peterson coil grounded and ungrounded system. The PCS-9631 features high performance functional library, programmable logic, configurable I/O and integrated frequency-tracking. The PCS-9631 can fully support the IEC61850 communication protocol and GOOSE function, and can completely meet customer demands. • Four-stage overcurrent protection. (50P/51P) • RMS overcurrent protection. (51RMS) • Six-stage zero sequence overcurrent protection. (50/51G) • Unbalance current protection. (60P/G) • Thermal overload element. (49) • Negative sequence overcurrent protection. (46) • Undercurrent protection. (37) • Breaker failure protection. (50BF) • Two-stage undervoltage protection and two-stage over voltage protection. (27/59) • Phase voltage differential protection. (87V) • Neutral voltage differential protection. (87VN) • Mechanical Protection (MR) • Remote and local tripping/closing of breaker. • Voltage and current drift auto adjustment. • Frequency tracking.