Overload relay PCS-9613

over-currentIECdifferential

The PCS-9613 relay is a current differential protection and overcurrent protection, control and monitoring unit with auto-reclosing function for distribution feeder lines in solidly grounded, impedance grounded, Peterson coil grounded and ungrounded system. This relay can fully support the IEC61850 communication protocol and GOOSE function, and can completely meet the demands of a modern digitalized substation. • Current differential protection (87L) • Six-stage phase overcurrent protection (50P/51P/67P) • Six-stage zero sequence overcurrent protection (50G/51G/67G) • Negative sequence overcurrent protection (46) • Broken conductor protection (46BC) • The ratio of negative-sequence current to positive-sequence current (Ι2/Ι1) is used to detect the broken conductor. • Breaker failure Protection (50BF) • Thermal overload protection (49) • Undervoltage/Overvoltage protection (27/59) • Switch-onto-fault (SOTF) logic. • Synchronism check (25) • Auto-reclosing (three-pole) (79) • Mechanical protection(MR) • Remote control and measurement. • Voltage and current drift auto adjustment.