Description

GE Multilin 750-P5-G1-S5-HI-A20-R-E-H Feeder Management Relay

The GE Multilin 750-P5-G1-S5-HI-A20-R-E-H, also cataloged as the 750 Feeder Management Relay, operates as a dedicated hardware component for feeder protection, current measurement, breaker control, and monitoring within GE Multilin 750/760 Protection System platforms.

Hardware Specifications

Parameter	Specification
Model	750-P5-G1-S5-HI-A20-R-E-H
Brand	GE Multilin
Origin	GE Multilin 750/760 Protection System Series
Weight	14.00 lbs
Operating Temp	-40 deg C to +60 deg C
Power Consumption	Not specified in available technical data
Device Type	Feeder Management Relay
Control Power Supply	88-300 VDC or 70-265 VAC, 48-62 Hz
Phase Current Input	5 A CT secondary
Ground Current Input	5 A CT secondary zero-sequence input
Sensitive Ground Input	5 A CT secondary
Analog Outputs	Eight assignable 4-20 mA DC outputs
Display Interface	Enhanced 40-character (2 x 20) backlit LCD with keypad navigation
Communication Interfaces	RS232, RS422/RS485, Ethernet
Communication Protocols	Modbus RTU, Modbus TCP/IP, DNP 3.0
Enclosure Type	Draw-out chassis with conformal coating option

Industrial Control and Protection Integration

The GE Multilin 750 series relay incorporates feeder monitoring functions through configurable current inputs, analog outputs, and digital communication interfaces. The 750-P5-G1-S5-HI-A20-R-E-H configuration supports 5 A phase current measurement, 5 A ground current sensing, and 5 A sensitive ground measurement channels for feeder protection schemes.

The relay configuration supports SCADA and DCS data acquisition through Modbus RTU, Modbus TCP/IP, and DNP 3.0 communication protocols. The A20 option provides eight assignable 4-20 mA outputs for analog signal transmission to external monitoring systems.

The relay hardware supports deterministic network communication requirements through Ethernet and serial communication ports. Firmware flash compatibility and configuration management are performed through the GE Multilin relay engineering environment for installed protection system maintenance.

Frequently Asked Questions

Q: What current input configuration is provided by the 750-P5-G1-S5-HI-A20-R-E-H model?
A: The relay provides 5 A phase current inputs, 5 A ground current input, and 5 A sensitive ground current input according to the ordering configuration.

Q: Does the relay support hot-swap replacement during feeder operation?
A: The unit uses a draw-out chassis design. Removal or insertion procedures must follow site protection maintenance procedures and verify isolation conditions before servicing.

Q: Which communication interfaces are available for system integration?
A: The relay provides front RS232, RS422/RS485, and Ethernet communication interfaces supporting Modbus RTU, Modbus TCP/IP, and DNP 3.0 protocols.

Field Installation Guidelines

• Install the relay in a compatible protection panel or control cabinet with correct mechanical support for the draw-out chassis.
• Verify CT secondary wiring polarity and terminal connections before energizing current inputs.
• Maintain separation between CT wiring, control power wiring, and communication cables to reduce electromagnetic interference.
• Apply cable shielding and grounding practices according to site electrical installation standards.
• Confirm the control power supply range before connection: 88-300 VDC or 70-265 VAC at 48-62 Hz.
• Check communication wiring termination for RS422/RS485 networks before commissioning.
• Verify analog output loop wiring for correct polarity when connecting 4-20 mA channels to SCADA or DCS equipment.
• Ensure conformal-coated units are installed according to environmental requirements for moisture and chemical exposure conditions.

Specifications

• Brand: General Electric

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems