Product Description
General Electric SR750 Multilin Feeder Management Relay
Product Overview
- Description: The General Electric SR750 is a Multilin feeder management relay designed for advanced protection, control, and monitoring of electrical distribution feeders in industrial and utility applications.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | General Electric |
| Series | Multilin SR |
| Model/Part Number | SR750 |
| Model Type | Feeder Management Relay |
| Function | Protection, control, and monitoring of electrical distribution feeders |
| Display | 40-character alphanumeric LCD |
| Inputs | 4 phase CT inputs, 1 ground CT input, 4 voltage inputs, multiple digital inputs (configurable) |
| Outputs | 5 trip relay outputs, 4 auxiliary relay outputs, 2 analog outputs (configurable) |
| Communication Interfaces | RS232, RS485, Modbus RTU, optional Ethernet, DNP 3.0, DeviceNet |
| Signal Conditioning | Internal analog-to-digital conversion, directional processing |
| Accuracy | ±1% for current/voltage measurements, ±3% for power measurements (typical) |
| Protection Features | Phase/ground overcurrent (50/51, 50N/51N), directional overcurrent (67, 67N), over/under voltage (59/27), over/under frequency (81O/U), breaker failure, thermal overload, negative sequence, synchrocheck |
| Redundancy | Not applicable (single device, supports redundant power supply) |
| Diagnostics | Event recording (up to 256 events), waveform capture, fault 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 |