GE 750-P5-G5-S5-LO-A20-R

Overview

The GE 750-P5-G5-S5-LO-A20-R is a Multilin 750 series feeder management and protection relay designed for distribution feeder protection, control, and monitoring in electrical power systems.

It is widely used in industrial plants, substations, and utility networks to protect feeders from faults and ensure stable power distribution.

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Product Function

This relay is a microprocessor-based protection device that continuously monitors electrical parameters and reacts to abnormal conditions:

• Detects overcurrent and short-circuit faults
• Provides ground fault protection using sensitive ground current measurement
• Monitors phase current conditions (5A inputs)
• Supports system control and breaker operation logic
• Records system events for fault analysis and diagnostics

It ensures fast isolation of faults to protect equipment and maintain grid stability.

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Key Features

• Advanced Feeder Protection: Designed for distribution system reliability
• 5A Current Inputs: Phase, zero-sequence, and sensitive ground current measurement
• Multi-Protocol Support: Integrates with SCADA and automation systems
• Analog Outputs (8 channels): 4–20 mA signals for external monitoring
• Wide Power Supply Range: 20–60 VDC or 20–48 VAC operation
• Event Recording & Diagnostics: Stores fault data for analysis
• Industrial Communication Capability: Supports EnerVista configuration software

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Technical Specifications

Parameter	Specification
Model	750-P5-G5-S5-LO-A20-R
Series	GE Multilin 750/760
Product Type	Feeder Management Relay
Phase Current Input	5 A
Ground Current Input	5 A sensitive ground
Control Power	20–60 VDC / 20–48 VAC
Frequency	48–62 Hz
Analog Outputs	8 × 4–20 mA
Operating Temperature	-40°C to +60°C
Display Type	Basic display
Weight	~4.8 kg

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Structure & Design

The relay is built as a microprocessor-based protection unit, consisting of:

• Central processing unit for protection logic
• Current input measurement circuits
• Analog output interface module
• Communication ports (serial/Ethernet depending on configuration)
• Front panel display for status and alarms
• Rugged industrial enclosure for substation environments

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Application Areas

The GE 750 relay is widely used in:

• Electrical distribution substations
• Industrial power distribution systems
• Oil & gas facilities
• Manufacturing plants
• Utility feeder protection systems

It is especially important in systems requiring selective and fast fault clearing.

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Installation & Maintenance

Installation:

• Mounted in control panels or switchgear racks
• Connected to CTs (current transformers) for phase and ground measurement
• Configured using GE EnerVista software

Maintenance:

• Regular testing of protection functions
• Verification of CT wiring integrity
• Firmware and settings backup
• Event log review for system diagnostics

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Advantages

• Fast and reliable fault detection
• High measurement accuracy for feeder protection
• Flexible integration with SCADA systems
• Robust design for harsh industrial environments
• Advanced diagnostics and event recording

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Summary

The GE 750-P5-G5-S5-LO-A20-R Multilin Relay is a reliable feeder protection device designed for medium to large-scale power distribution systems. With its precise current measurement, advanced protection functions, and strong communication capabilities, it ensures safe, stable, and efficient operation of electrical feeders in industrial and utility networks.

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Xingruijia

Original factory direct supply, quality assurance - GE module professional supplier

·Manager: Jinny                                         ·E-mail: sales1@xrjdcs.com     

·Tel: + 86-15359273791（WhatsApp）   ·Wechat: + 86-15359273791

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