Schneider Easergy MiCOM P437 Distance Protection Relay

Feature & Principle

It belongs to Schneider Easergy MiCOM P437 series numerical distance protection relay. It uses impedance measurement principle for fast selective phase-to-phase, earth short-circuit distance protection. It integrates overcurrent, thermal overload, auto-reclose, fault recording and SOE sequence of event function. Supports IEC61850, Modbus, DNP3 communication for substation SCADA. Used for high voltage transmission and distribution feeder protection.

Specifications

Model: P437-84904170-308-409-631-921 Brand: Schneider Electric Series: MiCOM P437 Function: Distance protection, earth fault, overcurrent, autoreclose, fault recorder Communication: IEC61850, Modbus, DNP3 Configuration software: MiCOM S1 Studio Mounting: Panel flush mounting Application: Substation HV/MV feeder, transmission line protection Certification: CE, IEC, KEMA

Components & Diagnostics

CT/PT signal acquisition board, main CPU board, power supply module, relay output contact, local HMI display, status LED. Common faults: CT signal abnormal, communication interruption, relay contact burnout, setting parameter loss, power module failure.

Product Brief

P437-84904170-308-409-631-921 protection relay, Schneider MiCOM high-voltage line protection spare widely used for substation relay cabinet overhaul and replacement.