GE
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GE SR489-P1-LO-A20-E Electric Generator Management Relay
GE SR489-P1-LO-A20-E Electric Generator Management Relay
Manufacturer: GE
Product No.: SR489-P1-LO-A20-E
Product Type: Electric Generator Management Relay
Product Origin: USA
Payment: T/T
Weight: 124000g
Shipping port: Xiamen
Warranty: 12 months
Description
The GE SR489-P1-LO-A20-E is a generator management relay from the GE Multilin 489 series, designed for protection, control, monitoring, and metering of small to medium-sized generator sets. It integrates current transformer inputs, enhanced display interface, analog I/O, and communication capability to support generator protection and diagnostics, and it can interface with SCADA/DCS systems via standard protocols. This model uses a 1 A CT input (P1), low-voltage control power range (LO), 4-20 mA analog outputs (A20), and features an enhanced LCD display (E).
Technical Parameters
| Parameter Category | Specification |
|---|---|
| Model / Series | 489 Generator Management Relay |
| Part Number | SR489-P1-LO-A20-E |
| Manufacturer | GE / GE Multilin |
| Phase Current Input | P1 = 1 A CT secondary |
| Control Power (LO) | DC: 20–60 V; AC: 20–48 V @ 48–62 Hz |
| Analog Outputs | A20 = 4–20 mA |
| Analog Input Supply | +24 V DC @ 100 mA max |
| Metering Update Rate | 50 ms |
| Relay Operation Time | 10 ms |
| IRIG-B Shift Compatibility | TTL |
| Output/Neutral CT Conversion | 0.02 to 20 × CT |
| Phase Differential Curve | Dual slope |
| Voltage Phase Reversal Accuracy | 200–400 ms |
| Display Interface | Enhanced LCD |
| Communications Supported | Modbus RTU, Modbus TCP/IP, DNP3 (via supported network modules) |
| Integration | DCS/SCADA connectivity |
| Ingress Protection | Complies with IEC60529 |
| Typical Operating Temperature | (Wide industrial range implicit per series standard) |
| Application | Generator protection, monitoring and control |
