Product Overview
The GE SR750-P1-G1-S1-H1-A20-G is a comprehensive feeder management relay belonging to GE’s Multilin SR750 series. This intelligent electronic device (IED) is specifically engineered for the protection, control, and monitoring of feeders in medium and high-voltage electrical distribution systems. The GE SR750-P1-G1-S1-H1-A20-G integrates a wide array of protection functions, including overcurrent, earth fault, voltage, and frequency protection, ensuring reliable and selective fault clearing. Its advanced control capabilities allow for local and remote operation of circuit breakers and other switching devices. Furthermore, the GE SR750-P1-G1-S1-H1-A20-G provides extensive monitoring and metering functionalities, offering valuable insights into feeder performance and power quality. With its flexible communication options, including Ethernet and serial ports, the GE SR750-P1-G1-S1-H1-A20-G can seamlessly integrate into modern substation automation systems, facilitating centralized control, data acquisition, and event analysis. The GE SR750-P1-G1-S1-H1-A20-G is a powerful and versatile solution for enhancing the reliability, security, and efficiency of electrical distribution networks. The specific suffix “-P1-G1-S1-H1-A20-G” denotes particular hardware and software configuration options tailored to specific application requirements.
Technical Specifications
Due to the highly configurable nature of the GE SR750 series, the exact technical specifications can vary based on the specific suffix. However, the following table provides a general overview of the typical specifications for a GE SR750-P1-G1-S1-H1-A20-G feeder management relay. For precise specifications, refer to the specific product datasheet for this model.
| Parameter Name | Parameter Value |
|---|---|
| Product Model | SR750-P1-G1-S1-H1-A20-G |
| Manufacturer | GE Multilin (now part of GE Grid Solutions) |
| Product Type | Feeder Management Relay |
| Protection Functions | Overcurrent (50/51), Earth Fault (50N/51N), Voltage (27/59), Frequency (81), Directional Overcurrent (67), etc. (specific functions depend on configuration) |
| Control Functions | Circuit Breaker Control (Open/Close), Local/Remote Control |
| Metering | Current (I), Voltage (V), Power (P, Q, S), Energy (kWh, kvarh), Frequency (Hz) |
| Communication Ports | Ethernet (typically 10 Mbps), RS-232, RS-485 |
| Communication Protocols | Modbus RTU, Modbus TCP/IP, DNP 3.0 Level 2 |
| Digital Inputs | Typically multiple, voltage-dependent |
| Digital Outputs | Typically multiple, contact rating dependent |
| Analog Inputs | Typically multiple, for voltage and current sensing |
| Power Supply | Typically 85-264 VAC/VDC |
| Mounting | Flush mounting in panel |
| Operating Temperature | Typically -40 °C to +70 °C |
| Dimensions | Refer to GE Multilin SR750 series datasheet |
Main Features and Advantages
The GE SR750-P1-G1-S1-H1-A20-G feeder management relay is packed with features designed to provide comprehensive protection, control, and monitoring for electrical feeders. Its integrated suite of protection algorithms ensures rapid and selective fault isolation, minimizing system disturbances and protecting valuable equipment. The advanced control capabilities of the GE SR750-P1-G1-S1-H1-A20-G allow for flexible and reliable operation of switching devices, both locally and remotely, enhancing operational efficiency and responsiveness. The accurate metering and monitoring functions provide crucial data for power system analysis, load management, and fault diagnostics.
Comprehensive Feeder Protection: The GE SR750-P1-G1-S1-H1-A20-G integrates a wide range of protection elements tailored for feeder applications, including overcurrent, earth fault, voltage, and frequency protection. Directional overcurrent protection enhances selectivity in complex networks. The specific configuration denoted by the suffix determines the exact protection functions included.
Advanced Control Capabilities: The relay provides robust control functionalities for circuit breakers, including open and close commands, interlocking schemes, and status indication. Remote control capabilities via communication protocols enable centralized operation from a substation control system.
Integrated Metering and Monitoring: The GE SR750-P1-G1-S1-H1-A20-G accurately measures key electrical parameters such as current, voltage, power, and energy. It also monitors system frequency and can provide data for power quality analysis, enabling proactive maintenance and efficient energy management.
Flexible Communication Options: Equipped with Ethernet and serial communication ports, the GE SR750-P1-G1-S1-H1-A20-G supports industry-standard protocols like Modbus RTU, Modbus TCP/IP, and DNP 3.0. This allows for seamless integration with substation automation systems, SCADA, and other control platforms for centralized data acquisition and control.
Robust and Reliable Design: Built to withstand harsh industrial environments, the GE SR750-P1-G1-S1-H1-A20-G features a rugged design and a wide operating temperature range, ensuring reliable performance in demanding substation conditions.
