Overview
Specification
| Parameter | Specification |
|---|---|
| Part Number | 489‑P5‑HI‑A20 |
| Product Type | Generator Management Relay |
| Series | GE Multilin 489 |
| Phase Current Inputs | P5 = 5 A phase CT secondaries |
| Control Power | HI = 90–300 VDC or 70–265 VAC @ 48–62 Hz |
| Analog Outputs | A20 = 4–20 mA channels |
| Display | Enhanced LCD with status LEDs |
| Protection Functions | Stator differential, ground, reverse power, loss of field |
| Communication Interfaces | RS232, RS485, 10BaseT Ethernet |
| Environmental Protection | Conformal coating for harsh conditions |
| Operating Temperature Range | –40°C to +60°C |
| Humidity | Up to 95% non‑condensing |
| Mounting | Panel or draw‑out rack mounting |
| Typical Weight | Approx. 12 kg |
| Software | EnerVista 489 Setup supported |
FAQ
A1: It supports 90–300 VDC or 70–265 VAC at 48–62 Hz for flexible power system integration.
Q2: How many analog outputs are available?
A2: The relay includes four 4–20 mA analog channels for system monitoring.
Q3: Can this relay communicate with external systems?
A3: Yes, it supports RS232, RS485, and 10BaseT Ethernet communications.
Q4: What protection functions are included?
A4: It features differential, stator ground, reverse power, and loss of field protection.
Q5: Does it provide local status visibility?
A5: Yes, an enhanced LCD display and LEDs show real‑time relay status.
Q6: Is the relay suitable for harsh environments?
A6: Yes, the conformal coating and rugged design support operation in demanding conditions.
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