GE
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GE 489-P5-HI-A20 Generator Management Relay System
GE 489-P5-HI-A20 Generator Management Relay System
Manufacturer: GE
Product No.: 489-P5-HI-A20
Product Type: Generator Management Relay System
Product Origin: USA
Payment: T/T
Weight: 2000g
Shipping port: Xiamen
Warranty: 12 months
Description
GE 489 is a microprocessor-based generator management relay designed to provide comprehensive protection, control, and monitoring for synchronous and induction generators. It is widely applied in power plants, cogeneration systems, industrial facilities, and utility substations.
The relay integrates multiple generator protection functions, high-accuracy metering, event recording, and communication capabilities into a single platform. By continuously monitoring electrical parameters, the GE 489 can rapidly detect abnormal operating conditions—such as overcurrent, reverse power, loss of excitation, or frequency deviations—and initiate protective actions to prevent equipment damage and ensure system stability. Its flexible configuration and robust hardware make it suitable for both new installations and retrofit projects.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | GE 489 Generator Management Relay |
| Product Type | Generator Protection and Management Relay |
| Current Input Rating | 1 A or 5 A CT secondary (model dependent) |
| Voltage Inputs | Three-phase voltage inputs for generator monitoring |
| Control Power Supply | Low range: 20–60 V DC / 20–48 V AC |
| High range: 90–300 V DC / 70–265 V AC | |
| System Frequency | 25 Hz / 50 Hz / 60 Hz |
| Protection Functions | Overcurrent, differential protection, over/under-voltage, over/under-frequency, reverse power, loss of excitation, negative sequence, thermal protection |
| Metering Accuracy | High-accuracy RMS measurement for current, voltage, power, energy, and frequency |
| Analog Outputs | 4–20 mA programmable outputs |
| Digital Inputs / Outputs | Multiple programmable digital inputs and relay outputs (model dependent) |
| Communications | RS232 / RS485; supports common industrial protocols (e.g., Modbus, DNP3) |
| Event & Fault Recording | Time-stamped event records and fault logs |
| Display | Large backlit LCD with keypad |
| Mounting | Panel-mounted, draw-out case |
| Operating Temperature | 0 °C to +60 °C |
