Distance protection relay PCS-902S

frequency

PCS-902S provides comprehensive protection and control solutions for transmission lines with high-speed sub-cycle distance element. The PCS-902S is intended for application on overhead line, cables and hybrid transmission lines with diverse voltage levels. With its flexibility and the powerful PCS-Studio configuration tool, PCS-902S offers future-oriented system solutions. Six zone phase-to-phase distance protection (21Q/21M) Mho or quadrilateral characteristic, directional, load encroachment, power swing blocking releasing and unique low-voltage elements are provided for phase-to-phase distance protection. One zone phase-to-phase distance protection for pilot scheme (85) An independent zone for pilot scheme, such as PUTT, POTT, Blocking, Unblocking, DTT & Zone Extension. The scheme integrates current reversal logic, weak-infeed echo and open breaker echo. Six zone phase-to-ground distance protection (21Q/21M) Mho or quadrilateral characteristic, reactance characteristic, directional, load encroachment, power swing blocking releasing and unique low-voltage elements are provided for phase-to-ground distance protection. One zone phase-to-ground distance protection for pilot scheme (85) An independent zone for pilot scheme, such as PUTT, POTT, Blocking, Unblocking, DTT & Zone Extension. The scheme integrates current reversal logic, weak-infeed echo and open breaker echo. High-speed DPFC distance protection (21D) Innovative Deviation of Power Frequency Component (DPFC) distance protection quickly clears faults in a sub- cycle. DPFC is immune to the load fluctuation, weak-infeed and power swing. Pilot directional earth-fault protection (85)