GE Multilin SR489‑P5‑HI‑A20‑E Generator Management Relay
GE Multilin SR489‑P5‑HI‑A20‑E Generator Management Relay - Image 2
GE Multilin SR489‑P5‑HI‑A20‑E Generator Management Relay - Image 3
GE Multilin SR489‑P5‑HI‑A20‑E Generator Management Relay - Image 4

GE Multilin SR489‑P5‑HI‑A20‑E Generator Management Relay

  • SR489‑P1‑HI‑A20‑E
  • SR489‑P5‑LO‑A20‑E
  • SR469‑P5‑HI‑A20‑E (Motor Protection Relay)
  • 489‑P5‑HI‑A20‑T‑H
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Description

GE Multilin SR489‑P5‑HI‑A20‑E Generator Management Relay

 

Product Title

GE Multilin SR489‑P5‑HI‑A20‑E Microprocessor‑Based Generator Management Relay, 5A CT Secondary, Enhanced LCD Display, Universal HI Power Supply

 

Product Overview

The SR489‑P5‑HI‑A20‑E is a high‑performance multifunctional generator management relay from GE Multilin 489 series. It integrates full‑scope generator protection, metering, control and fault recording functions in one compact panel‑mount unit. Designed for synchronous generator sets and prime‑mover driven power assets, the device performs real‑time electrical parameter acquisition, configurable protection logic, breaker control and event logging. It communicates with SCADA and plant control systems for remote monitoring and operation. This legacy relay is widely used for spare‑part replacement, maintenance and retrofit of existing power generation installations, as original manufacturing has been discontinued.

SR489-P5-HI-A20-E

Technical Specifications

Item Parameter
Manufacturer GE Multilin (GE Grid Solutions)
Model SR489‑P5‑HI‑A20‑E
CT Secondary Rating 5 A phase current input
Control Power (HI) 90‑300 VDC / 70‑265 VAC, 48‑62 Hz
Analog Output 4‑20 mA
Human‑Machine Interface Enhanced large LCD display, local keypad
Protection Functions Over‑current, ground fault, reverse power, loss of field, thermal overload, over‑/under‑voltage, over‑/under‑frequency, negative sequence, VT fuse failure, breaker failure protection
Communication RS‑485, Modbus RTU, DNP3.0; configurable baud rate up to 19200 bps
Configuration Software EnerVista 489PC software
Fuse 2.5 A, 5×20 mm HRC SLO‑BLO fuse (Littelfuse 215‑02.5)
Operating Temperature ‑20 °C ~ +70 °C, non‑condensing
Protection Class IP40 front panel, IP10 rear terminals
Mounting Panel‑mount cut‑out installation
Weight Approx. 4.9 kg
Certifications UL 508, CE compliant
Data Storage Event records, fault oscillography, historical metering data

 

Key Features

  1. All‑in‑one generator protection & control: Combines comprehensive electrical protection, breaker control, precision metering and fault disturbance recording within single hardware unit, reducing auxiliary hardware footprint.
  2. Enhanced local HMI: Large enhanced LCD display with keypad supports on‑site parameter viewing, setting modification, alarm and fault status check without PC tool.
  3. Flexible programmable logic: Custom logic settings allow adaptation for different generator sizes, prime movers and plant operating requirements.
  4. Multi‑protocol industrial communication: Modbus RTU and DNP3 interfaces enable seamless connection to SCADA, DCS and remote monitoring platforms for real‑time data and remote control commands.
  5. Complete fault diagnosis capability: Stores event sequence logs and fault waveform records to support post‑failure root‑cause analysis.
  6. Universal wide‑range HI power supply: Accepts both AC and DC control power supply, adapting to diverse power‑plant cabinet power architectures.
  7. Robust industrial hardware: High EMI‑immunity design for continuous long‑term operation in power‑plant control room environments; targeted for legacy system life‑extension projects.

 

Application & Typical Scenarios

Application Information

The SR489‑P5‑HI‑A20‑E provides primary protection, operational monitoring and control for synchronous generators. It continuously monitors voltage, current, frequency, power and thermal conditions, executes alarm or trip commands upon abnormal conditions to safeguard generator winding and prime‑mover equipment. It serves as critical spare hardware for operational power‑generation assets where original GE Multilin protection systems remain in service.

Typical Application Scenarios

  • Industrial backup power generator sets
  • Cogeneration and combined‑cycle power plants
  • Small‑to‑medium utility synchronous generators
  • Petrochemical on‑site captive power generation
  • Marine and offshore platform power generation systems
  • District energy power stations
  • Retrofit & spare‑part upgrade for existing generator protection panels

SR489-P5-HI-A20-E

Compatible / Matching Components

  • Configuration Tool: EnerVista 489PC setup software for PC‑based parameter programming and fault data retrieval
  • Current / Voltage Transformers: 5 A output phase CTs, VT potential transformers matching generator nominal voltage
  • Accessories: Communication cables, auxiliary wiring harness, replacement 2.5 A fuses, mounting gaskets for panel installation
  • Host System: SCADA / DCS host supporting Modbus RTU or DNP3 protocol for data acquisition

 

Related & Alternative Models

  • SR489‑P1‑HI‑A20‑E
  • ‑P5‑LO‑A20‑E
  • SR469‑P5‑HI‑A20‑E (Motor Protection Relay)
  • 489‑P5‑HI‑A20‑T‑H

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