Product Description
General Electric SR469 Multilin Motor Protection Relay
Product Overview
- Description: The General Electric SR469 is a Multilin motor protection relay designed for protection, control, and monitoring of medium to large motors in industrial applications. It offers comprehensive motor protection features, including thermal overload, overcurrent, and fault diagnostics
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | General Electric |
| Series | Multilin SR |
| Model/Part Number | SR469 |
| Model Type | Motor Protection Relay |
| Function | Protection, control, and monitoring of medium to large motors |
| Display | 40-character alphanumeric LCD |
| Inputs | 4 phase CT inputs, 1 ground CT input, up to 12 RTD inputs (configurable), multiple digital inputs |
| Outputs | 4 relay outputs (trip, alarm, auxiliary), 2 analog outputs (configurable) |
| Communication Interfaces | RS232, RS485, Modbus RTU, optional Ethernet, DeviceNet |
| Signal Conditioning | Internal analog-to-digital conversion, thermal modeling |
| Accuracy | ±1% for current/voltage measurements, ±2°C for RTD measurements (typical) |
| Protection Features | Thermal overload (49), phase/ground overcurrent (50/51, 50N/51N), differential protection (87), locked rotor, unbalance, under/overvoltage, undercurrent, RTD temperature monitoring, breaker failure |
| Redundancy | Not applicable (single device, supports redundant power supply) |
| Diagnostics | Event recording (up to 256 events), waveform capture, motor start reports, self-test |
| Compatibility | Integrates with SCADA systems, Multilin EnerVista software |
| Power Supply | 48–125 VDC or 48–110 VAC (standard), optional 125–250 VDC or 100–240 VAC |
| Power Consumption | 10 W typical, 20 W max |
| Environmental Specifications | Operating Temperature: -40°C to +60°C Storage Temperature: -40°C to +80°C Relative Humidity: 5% to 95% non-condensing |
| Enclosure | IP40 (front), IP20 (rear, mounted in panel) |
| Dimensions | Approx. 178 mm (H) x 146 mm (W) x 203 mm (D) |
| Weight | 4.0 kg (approx.) |
| Mounting | Panel mount, 19-inch rack compatible |
| Certifications | CE, UL, cULus, IEC 60255 |