Overview

The GE Multilin SR489‑P5‑LO‑A20‑E is a Generator Management Relay designed for medium to large generators. It provides integrated protection, control, and monitoring, ensuring safe and efficient operation in power plants, industrial facilities, and utility substations.

This relay combines protection, metering, and communication functions in one device, reducing the need for multiple standalone instruments. It safeguards generators against abnormal conditions such as overcurrent, loss of excitation, over/under voltage, and frequency disturbances.

Technical Data

Key Features

• Comprehensive generator protection against electrical and mechanical faults

• Integrated metering and monitoring of voltage, current, frequency, power, and energy

• Flexible communication for SCADA and automation systems

• Front-panel LCD and keypad for configuration and local monitoring

• Event recording and diagnostics for predictive maintenance

• Industrial-grade reliability for harsh environments

Typical Applications

• Power generation plants requiring generator protection and monitoring

• Utility substations managing grid-connected generators

• Oil & gas facilities with demanding electrical environments

• Industrial manufacturing plants needing reliable generator control

FAQ

Q1: What does the SR489‑P5‑LO‑A20‑E protect against?
A1: It protects generators against overcurrent, voltage/frequency disturbances, and loss of excitation.

Q2: Can it integrate with SCADA systems?
A2: Yes, it supports Modbus, DNP3, and RS485/Ethernet protocols for automation integration.

Q3: Does it provide metering functions?
A3: Yes, it includes real-time metering of voltage, current, frequency, power, and energy.

Q4: Which industries typically use this relay?
A4: It is widely applied in power generation, utilities, oil & gas, and heavy industry.