Products Description
The 750-P5-G5-D5-HI-A1-R-E-H Feeder Protection Relay is part of the GE Multilin 750 series designed for monitoring, protecting, and controlling electrical feeder circuits in industrial and utility power systems. The relay integrates protection functions, measurement capabilities, and communication interfaces into a single device, allowing operators to manage distribution feeders with high reliability and efficiency.
This digital relay supports current and voltage monitoring through CT and VT inputs and performs protective actions when abnormal electrical conditions occur. The device also includes built-in metering, event recording, and diagnostic functions that help engineers analyze system events and maintain operational stability.
Functional Role / System Position
Within a power distribution system, the 750 feeder relay functions as a primary protection and management unit for electrical feeders. It continuously measures electrical parameters such as current, voltage, frequency, power, and energy to determine system status.
When abnormal conditions such as overcurrent, undervoltage, or frequency deviations occur, the relay activates protective outputs that can trip circuit breakers or initiate other protective actions. This capability helps protect cables, transformers, and downstream equipment from damage caused by faults or abnormal operating conditions.
Key Features / Functional Capabilities
- Comprehensive feeder protection including overcurrent and voltage protection
- Supports phase current, ground current, and sensitive ground current inputs
- Integrated power system monitoring and metering functions
- Event recording and waveform capture for system diagnostics
- Multiple communication interfaces including RS232, RS422, RS485, and Ethernet
- Configurable protection curves and relay logic for different system requirements
Application Areas / Typical Use Cases
- Medium-voltage feeder protection in substations
- Power distribution monitoring in industrial plants
- Utility feeder automation systems
- Generator and transformer feeder protection
- Electrical protection in power generation facilities
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | 750-P5-G5-D5-HI-A1-R-E-H |
| Module Type | Feeder Protection Relay |
| Series | GE Multilin 750 Feeder Management |
| Phase Current Inputs | 5 A CT inputs |
| Ground Current Inputs | 5 A zero-sequence input |
| Voltage Inputs | 50–240 V AC (via VT) |
| Power Supply | 88–300 VDC / 70–265 VAC |
| Protection Functions | Overcurrent, undervoltage, overvoltage, frequency protection |
| Analog Outputs | Up to 8 channels (0–1 mA or 4–20 mA depending on configuration) |
| Communication Ports | RS232 / RS422 / RS485, optional Ethernet |
| Operating Temperature | −40°C to +60°C |
| Humidity | 5%–95% non-condensing |
| Mounting | Panel or 19-inch rack installation |
Contact Information
For pricing, availability, or technical consultation regarding this model, please contact our sales team:
【Sales Manager】
Silver
【WhatsApp】
+86-18020714492
【Email】
sales1@askplc.com
【WeChat】
+86-18020714492
FAQ
Q1: What is the main function of the 750-P5-G5-D5-HI-A1-R-E-H relay?
It provides protection, monitoring, and control for electrical feeder circuits within power distribution systems.
Q2: Which product series does this relay belong to?
It is part of the GE Multilin 750 Feeder Management Relay series used widely in utility and industrial protection systems.
Q3: What types of protection functions are included?
The relay supports functions such as overcurrent, undervoltage, overvoltage, and frequency protection, along with monitoring and metering features.
Q4: What communication options are available?
The relay can communicate through RS232, RS422, RS485, and optional Ethernet, supporting protocols like Modbus and DNP3.
Q5: Where is this relay typically installed?
It is commonly installed in substations, industrial distribution panels, and power generation facilities to protect feeder circuits and monitor electrical conditions.
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