GE Multilin E-P5-S5-H-E-M-C-P-SN-D-N Feeder Protection Relay

The GE Multilin E-P5-S5-H-E-M-C-P-SN-D-N is the configuration suffix for the Multilin 350 multifunctional digital feeder protection IED under the GE Multilin 3 Series platform, designed for medium voltage distribution feeder protection, breaker control, power metering and arc flash mitigation in utility and industrial substations. This GE Multilin E-P5-S5-H-E-M-C-P-SN-D-N integrates directional overcurrent, earth fault protection, auto-reclosing logic and synchcheck functions in one compact draw-out unit, used as primary or backup protection for overhead lines, cable feeders and capacitor bank circuits. The GE Multilin E-P5-S5-H-E-M-C-P-SN-D-N is widely supplied as a spare and retrofit protection device for substation cabinet maintenance and upgrade work.

The GE Multilin E-P5-S5-H-E-M-C-P-SN-D-N supports directional phase and ground overcurrent elements with configurable time-current curves, cold load pickup blocking, second harmonic restraint and breaker failure protection logic. The GE Multilin E-P5-S5-H-E-M-C-P-SN-D-N is equipped with integrated arc flash detection, supervised by overcurrent elements, which reduces incident energy and limits switchgear damage during internal short-circuit faults. Its front-panel HMI and keypad support local status viewing, setting verification and manual breaker control. Built-in event recording and oscillography capture high-resolution voltage and current waveforms for detailed post-fault analysis, and continuous CT/VT supervision plus trip coil monitoring help maintain the health of breaker control circuits.

This GE Multilin E-P5-S5-H-E-M-C-P-SN-D-N features flexible Ethernet and serial communication ports, supporting IEC 61850 GOOSE, DNP3, Modbus TCP and IEC 60870-5-104 protocols for SCADA interconnection and inter-relay logic. The GE Multilin E-P5-S5-H-E-M-C-P-SN-D-N supports IRIG-B and IEEE 1588 time synchronization to align timestamps across the substation automation system. The draw-out construction of the GE Multilin E-P5-S5-H-E-M-C-P-SN-D-N simplifies on-site testing and replacement without modifying test switch wiring. Password protection and audit trail functions are included to meet modern cybersecurity requirements for power substations.

The GE Multilin E-P5-S5-H-E-M-C-P-SN-D-N is commonly installed in distribution substations, industrial plant switchgear and mining power feeders. Replacing a failed relay with the GE Multilin E-P5-S5-H-E-M-C-P-SN-D-N restores selective feeder protection and bay control rapidly and reduces the scope of power outages. As a mature Multilin 3 Series protection relay configuration, the GE Multilin E-P5-S5-H-E-M-C-P-SN-D-N delivers reliable fault response and interoperability with other GE Vernova automation devices for distribution automation and restoration schemes. ESD precautions should be followed when handling the GE Multilin E-P5-S5-H-E-M-C-P-SN-D-N to protect internal electronic circuits.