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GE SR489-P5-HI-A20-E – Multilin Generator Management Relay
Product Overview
The SR489-P5-HI-A20-E is a digital generator management relay from GE Multilin’s 489 series, built for medium and small generator protection and control. It integrates comprehensive protection, precision monitoring, and flexible communication to safeguard generators, transformers, and related power assets. This unit addresses risks like overloads, short circuits, and voltage anomalies, ensuring operational stability in power generation, oil and gas, and industrial power systems.
Technical Specifications — SR489-P5-HI-A20-E
| Parameter | Value |
|---|---|
| Product Model | SR489-P5-HI-A20-E |
| Manufacturer | GE (GE Multilin) |
| Product Type | Digital Generator Management Relay |
| Power | Control Power: 90–300 VDC / 70–265 VAC (48–62 Hz) |
| Communication / Protocol | RS485, Modbus RTU/TCP, DNP3.0, Ethernet |
| Operating Temperature | -40 °C ~ +70 °C |
| Mounting | Panel mount, drawout design |
| Dimensions (HxWxD) | 178 × 127 × 254 mm |
| Weight | 1.36 kg (3 lb) |
| Typical Interfaces | 5 A CT inputs, 4–20 mA analog outputs, 8 Form-C relay contacts |
| Compliance | IEC 60255, IEEE C37.102, IP40 (front) / IP10 (rear) |
GE SR489-P5-HI-A20-E
Key Features and Benefits — SR489-P5-HI-A20-E
- Comprehensive Protection: Includes stator differential, loss of excitation, reverse power, and overexcitation protection for full generator fault coverage.
- Dual-Processor Design: Enables real-time monitoring and waveform capture, supporting high-accuracy fault analysis and system diagnostics.
- Flexible I/O: 5 A phase CT inputs, 4–20 mA analog outputs, and 8 relay contacts adapt to diverse system configurations.
- Enhanced Connectivity: Supports Modbus, DNP3.0, and Ethernet for seamless SCADA integration and remote monitoring.
- User-Friendly Operation: Enhanced LCD display and front-panel USB simplify configuration, while Enervista 489PC software aids programming.
- Robust Reliability: Drawout design with automatic CT shorts ensures safe maintenance; wide temperature range suits harsh industrial environments.
Related Models
- GE SR489-P1-HI-A20-E: 1 A CT input variant for low-current generator applications.
- GE SR489-P5-LO-A20-E: Low control power (20–60 VDC / 20–48 VAC) model for light-duty systems.
- GE SR489-P5-HI-A1-E: 0–1 mA analog output version for legacy monitoring setups.
- GE SR469-P5-HI-A20-E: Motor management relay sharing a common platform for coordinated protection.
Installation and Maintenance — SR489-P5-HI-A20-E
- Installation: Panel-mount the unit; connect CT/VT inputs, control power, and communication cables per wiring diagrams; secure front panel latches.
- Maintenance: Inspect LCD status and relay contacts periodically; use front-panel USB for firmware updates; no routine calibration needed.
- Compatibility: Verify CT ratio (5 A) and control power range match site requirements; coordinate with GE Multilin devices for system-wide protection。
