GE Multilin 750-P5-G5-S5-HI-A20-R-E Series Feeder Management Protection Relay

Product Description

750-P5-G5-S5-HI-A20-R-E, also known as SR750, is a feeder management relay from GE Multilin. It is a microprocessor-based integrated protection device with comprehensive feeder protection, metering, control, oscillography and communication functions. This variant features 5A phase current input, 5A residual ground input, 5A sensitive ground input, high voltage power supply, enhanced display, and eight 4-20mA analog outputs. It supports multiple protection curves for fast fault detection, breaker control and event logging. Widely deployed in medium & low voltage power distribution networks. Obsolete from OEM, it is a popular spare part for power system maintenance.

Specifications

• Model: 750-P5-G5-S5-HI-A20-R-E (SR750)
• Brand: GE Multilin (General Electric)
• Device Type: Feeder Management Relay
• Phase Current Input: 5A
• Residual Ground Current Input: 5A
• Sensitive Ground Current Input: 5A
• HI Power Supply Range: 70~265VAC / 80~300VDC
• Analog Output: 8 channels, 4-20mA
• Display: Enhanced front panel display
• Communication Ports: RS232, RS422, RS485; Modbus RTU, IEC 60870-5-104
• Rated Frequency: 50 / 60 Hz
• Operating Temperature: -40℃ ~ +60℃
• Storage Temperature: -40℃ ~ +80℃
• Functions: Overcurrent protection, earth fault protection, breaker failure protection, voltage protection, metering, fault oscillography, event recorder
• Lifecycle: Obsolete OEM product, available as new old stock or tested used units

Application

1. Integrated protection, monitoring and control for MV/LV feeders in substations, industrial power rooms and commercial distribution systems
2. Protection for cable feeders, bus outgoing circuits and distribution branches against overcurrent, earth fault, under/overvoltage
3. Remote breaker open/close, status acquisition, fault alarm and waveform analysis
4. Retrofit, replacement, spare parts stocking and maintenance of legacy power protection systems

Series Models

750-P5-G5-S5-LO-A20-R-E, 750-P5-G5-S5-HI-A20-R, 760 (Transformer protection relay), SR750 configurable variants