Overview
Configured for feeder protection, metering, and breaker control in electrical distribution systems, the SR750-P5-G5-S5-HI-A20-G (SR750 Feeder Management Relay) provides direct physical and electrical execution of protection logic, current measurement, analog output, and breaker close control functions.
Suffix Breakdown & Model Matrix
The supplied documentation identifies a single catalog number SR750-P5-G5-S5-HI-A20-G. No official suffix definition or ordering matrix is provided in the available source material; therefore, no suffix interpretation is included.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | SR750-P5-G5-S5-HI-A20-G |
| Brand | GE |
| Product Type | Feeder Management Relay |
| Series | SR750 Series |
| Phase Current Inputs | 5 A |
| Zero Sequence Current Inputs | 5 A |
| Sensitive Ground Current Input | 5 A |
| Analog Outputs | Eight 0-1 mA outputs |
| Breaker Control | Breaker Close |
| Control Power | 88-300 VDC |
| AC Supply | 70-265 VAC |
| Frequency | 48/62 Hz |
| Weight | 10.00 lb |
| Origin | Not specified |
| Dimensions | Not specified |
| Operating Temp | Not specified |
| Power Consumption | Not specified |
PLC System Integration Characteristics
The SR750 Series is intended for direct integration into feeder protection and control architectures. Electrical interfaces are provided through dedicated current transformer inputs, control power terminals, analog outputs, and breaker control circuits. System integration depends on the installed firmware revision, configured protection settings, and external wiring defined by the application. No backplane communication bandwidth or firmware compatibility information is specified in the supplied documentation.
Frequently Asked Questions
Q: Can the relay inputs accept both 1 A and 5 A current transformers?
A: The supplied model is specified with 5 A phase, zero-sequence, and sensitive ground current inputs. Compatibility with other CT ratings is not indicated.
Q: Is hot replacement supported while control power remains energized?
A: The provided documentation does not specify hot-swap capability. Installation or replacement should be performed with the equipment isolated according to the applicable electrical safety procedures.
Q: What analog output configuration is available on this model?
A: The relay provides eight 0-1 mA analog outputs as specified for the SR750-P5-G5-S5-HI-A20 configuration.
Field Installation Guidelines
- Verify the available control supply matches either 88-300 VDC or 70-265 VAC before energizing the relay.
- Confirm that all connected current transformers are rated for 5 A secondary output as required by this model.
- Route CT wiring separately from high-energy power conductors to reduce induced noise.
- Ground cable shields according to the site grounding practice and maintain consistent shield termination throughout the protection panel.
- Verify breaker close wiring polarity and terminal assignments before commissioning.
- Perform insulation and continuity checks on field wiring before applying control power.
