The 750-P1-G1-S1-HI-A20-R is part of the GE Multilin 750 Series, purpose-built for protecting and monitoring medium-voltage feeder systems. Manufactured by General Electric, this relay integrates protection, control, metering, and communication in one rugged device.
Engineered for substation automation, the GE 750-P1-G1-S1-HI-A20-R supports advanced logic, flexible I/O, and multiple communication protocols. It offers a powerful platform for feeder protection and system reliability.
Key Technical Specifications
| Category | Specification |
|---|---|
| Model | 750-P1-G1-S1-HI-A20-R |
| Manufacturer | General Electric (GE) |
| Series | Multilin 750 Series |
| Application | Feeder Management / Protection Relay |
| Dimensions (H × W × D) | 180 × 190 × 200 mm |
| Weight | Approx. 3.5 kg |
| Display | 40-character LCD with keypad interface |
| Control Inputs | 8 programmable digital inputs |
| Outputs | 6 digital outputs (form A & form C relays) |
| Analog Inputs | 3 phase currents, 1 ground current, 3 voltages |
| Communication Ports | RS232, RS485, and optional Ethernet |
| Protocols Supported | Modbus RTU, DNP3, IEC 61850 (option) |
| Power Supply | 100–250V AC / 125–250V DC |
| Mounting | Panel-mounted |
| Memory Storage | Non-volatile memory with event logging |
| Operating Temp. | –20°C to +60°C |
Features and Functional Highlights
All-in-One Protection and Monitoring
The 750-P1-G1-S1-HI-A20-R combines overcurrent protection, breaker control, voltage monitoring, and fault diagnostics in a single enclosure. This integration reduces installation complexity and panel space.
Flexible I/O and Custom Logic
With configurable inputs and outputs, this relay adapts to various protection schemes. Its logic engine allows users to create custom trip, alarm, and blocking conditions without external controllers.
Robust Communication Capability
It includes standard serial ports and optional Ethernet connectivity. The 750-P1-G1-S1-HI-A20-R supports industry-standard protocols like Modbus and DNP3, with optional IEC 61850 for modern grid integration.
Reliable Performance in Harsh Conditions
Tested for EMI, vibration, and temperature extremes, the GE 750-P1-G1-S1-HI-A20-R performs reliably in demanding substations. The panel-mount design ensures secure installation and easy access for maintenance.
Typical Applications
- Medium-voltage feeder protection
- Utility substations and switchgear
- Industrial power distribution systems
- Smart grid and automation systems
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