GE SR489-P5-HI-A20-E

¥9,999.00

The GE SR489-P5-HI-A20-E is a generator protection relay from the GE Multilin 489 series, designed to provide comprehensive protection, metering, and monitoring for generators and associated equipment. The SR489-P5-HI-A20-E combines multiple protection functions in a single relay, including differential, overcurrent, voltage, frequency, and loss-of-excitation protection, along with metering and event recording capabilities. The option code on the SR489-P5-HI-A20-E defines the specific hardware and firmware configuration, such as the CT/VT input arrangement, high-voltage digital inputs (“HI”), control power supply (“A20”), and enhanced feature set (“E”), so the full suffix must be matched to the application. Engineered for power generation environments, the SR489-P5-HI-A20-E is built to the reliability standards required for generator protection, where dependable operation directly affects plant safety and availability. For plants operating generators, stocking a spare SR489-P5-HI-A20-E helps maintain protection system availability and supports planned maintenance.

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Description

Product Parameters

Parameter Specification
Brand GE (General Electric) – Multilin
Model SR489-P5-HI-A20-E
Series Multilin 489 generator protection relay
Module Type Generator protection relay
Protection Functions Differential, overcurrent, voltage, frequency, loss-of-excitation, and related functions
Configuration Defined by full option-code suffix (P5, HI, A20, E)
Control Power “A20” supply option
Mounting Panel or switchgear installation
Operating Environment Power generation control and switchgear rooms
Certification Per GE / industry protection standards

Advantages and Features

  • Integrated protection: Combines multiple generator protection functions in one relay.

  • Metering and monitoring: Supports generator metering, event recording, and diagnostics.

  • Configurable hardware: Option codes define inputs, control power, and feature set.

  • Proven Multilin platform: Part of GE’s widely deployed protection relay family.

  • Power generation focus: Designed for the reliability demands of generator protection.

  • Lifecycle support: Backed by GE’s established documentation and service network.

Application Cases and Fields

The SR489-P5-HI-A20-E is used in applications including:

  • Power generation: Generator protection in utility and industrial plants.

  • Cogeneration and CHP: Protection for combined heat and power generators.

  • Industrial captive power: Generator protection in manufacturing facilities.

  • Oil and gas: Generator protection in upstream and downstream power systems.

  • Marine and offshore: Generator protection in vessel and platform power systems.

Comparison with Competing Products

Compared with third-party protection relays, the GE SR489-P5-HI-A20-E offers deep integration with the Multilin protection platform and established protection algorithms. Competing products may provide similar protection functions but often differ in metering depth, communication options, and lifecycle support. For plants standardized on GE Multilin relays, the SR489-P5-HI-A20-E minimizes integration risk and preserves consistency in protection settings and testing procedures.

Selection Suggestions

  • Verify the full option-code suffix matches your required CT/VT arrangement, control power, and feature set.

  • Confirm compatibility with your protection scheme and communication requirements.

  • Review relay setting and testing procedures for your generator.

  • Consider stocking a spare SR489-P5-HI-A20-E for critical generation equipment.

  • Consult GE documentation for configuration and commissioning details.

Precautions

  • Install and test only by qualified protection personnel following plant safety procedures.

  • Verify CT/VT wiring and polarity before commissioning.

  • Confirm relay settings and protection coordination before energizing.

  • Use only genuine GE parts to preserve protection certification and warranty.

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