Description
GE Multilin 750-P5-G5-S5-HI-A1-R-E Feeder Management Relay
Configured for feeder protection, metering, and electrical control execution in distribution feeder networks, the GE Multilin 750-P5-G5-S5-HI-A1-R-E (750 Feeder Management Relay) provides direct physical/electrical execution through CT inputs, programmable I/O, and communication interfaces.
Hardware Specifications
| Parameter |
Specification |
| Model |
750-P5-G5-S5-HI-A1-R-E |
| Brand |
GE Multilin |
| Operating Temp |
-40 deg C to +60 deg C |
| Power Consumption |
25 W nominal, 45 W maximum |
| Product Type |
Feeder Management Relay |
| Control Power Input |
88-300 VDC / 70-265 VAC, 50/60 Hz |
| Ride-Through Time |
50 ms minimum at 120 VAC / 125 VDC |
| Phase Current Inputs |
5 A CT secondary |
| Ground Current Inputs |
5 A CT secondary |
| Sensitive Ground Inputs |
5 A CT secondary |
| AC Voltage Inputs |
50-240 VAC phase-to-neutral |
| Frequency Range |
20-70 Hz |
| Analog Outputs |
8 assignable channels, 4-20 mA or 0-1 mA |
| Digital Inputs |
Up to 14 programmable contact inputs |
| Output Relays |
8 Form-C programmable relays |
| Serial Communication |
Front RS232 and rear RS485 Modbus RTU |
| Ethernet Communication |
10Base-T RJ45 Modbus TCP/IP |
| Mounting Type |
Drawout case, flush-mount 19-inch rack / panel installation |
| Front Panel Protection |
IP54 |
GE Multilin Industrial Network and Communication Interface Characteristics
The 750-P5-G5-S5-HI-A1-R-E supports industrial communication integration through RS232, RS485 Modbus RTU, and Ethernet Modbus TCP/IP interfaces. The Ethernet option provides 10Base-T RJ45 connectivity for networked feeder monitoring applications.
The relay supports deterministic data exchange between protection logic, programmable inputs and outputs, and supervisory systems. The configurable analog output channels provide 4-20 mA signal transmission for external monitoring devices.
Firmware configuration and communication mapping are managed through the relay interface and engineering configuration tools. The communication architecture supports integration with industrial control networks requiring feeder status, measurement data, and protection event information.
Frequently Asked Questions (FAQ)
Q: What type of current measurement inputs are available on the 750-P5-G5-S5-HI-A1-R-E?
A: The relay provides 5 A CT secondary inputs for phase current, ground current, and sensitive ground current measurement.
Q: Does the relay support Ethernet communication?
A: Yes. The E option provides 10Base-T RJ45 Ethernet communication with Modbus TCP/IP protocol support.
Q: What communication interfaces are available for serial connection?
A: The relay includes a front RS232 port and a rear RS485 port supporting Modbus RTU communication.
Field Installation Guidelines
Install the relay in a suitable panel or rack enclosure using the specified drawout case mounting arrangement. Verify CT polarity, phase sequence, and secondary wiring before energizing the measurement circuits.
Separate CT wiring, control wiring, and communication cables according to site electrical installation practices. Use shielded communication cables where required and terminate cable shields according to the grounding design of the protection panel.
Confirm that control power voltage matches the HI option input range before connection. Check grounding continuity, terminal tightness, and communication addressing before placing the relay into service.
