GE 750-P5-G5-D5-HI-A20-R Feeder Management Relay | Replacement, Equivalent & Selection Guide
Technical Specifications
The GE 750-P5-G5-D5-HI-A20-R is a fully featured Feeder Management Relay from GE Grid Solutions’ UR (Universal Relay) Series. Below are the key technical parameters based on the standard 750 platform configuration:
- Model: 750-P5-G5-D5-HI-A20-R
- Series: UR Series – 750 Feeder Management Relay
- Manufacturer: GE Grid Solutions (formerly GE Multilin)
- Form Factor: 19-inch rack-mount / panel-mount chassis
- Current Inputs: P5 – 5A nominal CT input module
- Voltage Inputs: G5 – standard voltage input module
- Digital I/O: D5 – digital input/output expansion module
- Communications: HI – high-speed Ethernet communications module (IEC 61850 / DNP3 / Modbus)
- Power Supply: A20 – AC/DC universal power supply (85–265 V AC / 88–300 V DC)
- Rear Connector: R – drawout rear terminal block
- Protection Functions: 50/51, 50N/51N, 67/67N, 27, 59, 81, 46, 49, 79 (ANSI)
- Metering: True RMS current, voltage, power, energy, harmonics
- Data Logging: Oscillography, sequence of events (SOE), fault records
- Standards: IEC 61850 Ed.2, IEEE C37.90, UL, CE
- Operating Temperature: -40°C to +60°C
- Weight: Approx. 5.08 kg
Note: Specifications are based on the standard UR 750 platform. Always verify with the official GE datasheet for your specific firmware revision.
Compatible Replacement & Equivalent Models
When the GE 750-P5-G5-D5-HI-A20-R is unavailable or requires a cost-effective alternative, the following models offer compatible functionality for feeder protection applications:
| Model | Brand | Key Similarity | Key Difference |
|---|---|---|---|
| 750-P5-G5-D5-HI-A20-R (OEM) | GE Grid Solutions | Exact match | – |
| GE 750-P5-G5-D5-HI-A10-R | GE Grid Solutions | Same platform, same I/O | A10 = DC-only power supply |
| GE 750-P5-G5-D5-LO-A20-R | GE Grid Solutions | Same chassis & protection | LO = standard serial comms (no Ethernet) |
| SEL-351S | Schweitzer Engineering | Feeder overcurrent protection | Different platform; SEL EMS software |
| Siemens 7SJ85 | Siemens | IEC 61850, feeder protection | DIGSI 5 configuration environment |
| ABB REF615 | ABB | Feeder management, IEC 61850 | PCM600 tool; different I/O mapping |
| Schneider P14D | Schneider Electric | Directional feeder protection | MiCOM S1 Studio software |
Important: Cross-brand replacements require engineering review of CT/VT ratios, I/O wiring, and communication protocol mapping before commissioning.
Why Choose the Original Model
While third-party equivalents exist, the GE 750-P5-G5-D5-HI-A20-R offers distinct advantages that make it the preferred choice for existing GE UR-based substations:
- Drop-in Replacement: Identical rear terminal block (R-type drawout) ensures zero wiring changes in existing panels.
- Firmware Continuity: Seamless upgrade path within the UR platform; existing EnerVista 750 Setup configurations are fully portable.
- IEC 61850 Ed.2 Native: HI module supports GOOSE messaging and MMS without additional gateways.
- Proven Field Record: Deployed in thousands of utility and industrial feeders globally across 40+ years of GE Multilin heritage.
- Integrated Metering & PQ: Eliminates the need for a separate power quality meter on the feeder.
- Cybersecurity: Role-based access control (RBAC) and encrypted communications meet NERC CIP requirements.
Typical Applications
- Medium-voltage feeder protection in utility distribution substations (11 kV – 35 kV)
- Industrial plant feeder and motor feeder protection (petrochemical, mining, steel)
- Renewable energy collection feeders (wind farm, solar farm MV switchgear)
- Railway traction substation feeder bays
- Data center and critical infrastructure MV switchgear
- Retrofit and upgrade of aging electromechanical relay panels
System Compatibility
- SCADA / DCS Integration: DNP3 Level 2, Modbus RTU/TCP, IEC 61850 MMS & GOOSE
- Configuration Software: EnerVista 750 Setup (free download from GE Grid Solutions)
- Time Synchronization: IRIG-B, IEEE 1588 PTP (with HI module)
- Compatible GE UR Accessories: UR-PANEL, UR-MOUNT, UR-CABLE series
- Switchgear Compatibility: ABB UniGear, Siemens NXPLUS, Schneider SM6, GE Entec
- CT Ratio: 1A or 5A selectable (P5 module = 5A nominal)
Selection Guide
Use the following guide to decode the GE 750 model number and select the correct variant for your application:
- 750 – Feeder Management Relay platform (UR Series)
- P5 – Current input module: P5 = 5A CT | P1 = 1A CT
- G5 – Voltage input module: G5 = standard VT inputs
- D5 – Digital I/O module: D5 = 8DI / 4DO expansion
- HI – Communications: HI = Ethernet (IEC 61850) | LO = Serial (RS-485)
- A20 – Power supply: A20 = AC/DC universal | A10 = DC only
- R – Rear connector: R = drawout terminal block | S = screw terminal
If your existing installation uses 1A CTs, order the 750-P1-G5-D5-HI-A20-R variant instead. Contact Konmask.com for assistance confirming the correct part number.
Quality Assurance & Sourcing
- All units sourced from authorized distributors or verified surplus channels with full traceability.
- Pre-shipment inspection: visual check, label verification, firmware version confirmation.
- Optional functional test available upon request (relay output continuity, comms port verification).
- Packaging: original OEM box where available; otherwise anti-static foam with moisture barrier.
- Warranty: 12 months from shipment date against manufacturing defects.
How to Order
- Confirm your exact part number: GE 750-P5-G5-D5-HI-A20-R
- Verify CT rating (1A or 5A) and power supply voltage at your site.
- Submit an inquiry via support@konmask.com or use the contact form on this page.
- Receive a formal quotation with lead time and shipping options within 24 hours.
- Confirm order and receive proforma invoice; shipment arranged via DHL / FedEx / sea freight.
Replacement & Compatibility FAQ
- Q: Can I replace a 750-P5-G5-D5-LO-A20-R with the HI variant?
- A: Yes. The HI module is a superset of LO. You will gain Ethernet/IEC 61850 capability. Existing serial wiring can be left disconnected or repurposed. No mechanical changes required.
- Q: Is the GE 750 compatible with SEL AcSELerator software?
- A: No. The 750 uses GE’s EnerVista 750 Setup software. SEL tools are proprietary to Schweitzer relays.
- Q: Can the ABB REF615 directly replace the GE 750 without rewiring?
- A: Not directly. The rear terminal layout differs. A wiring adapter or panel modification is required, plus full relay setting re-engineering.
- Q: What firmware version does this unit ship with?
- A: Firmware version varies by production batch. Please specify your required version when ordering, and we will confirm availability.
- Q: Do you provide a test report or certificate of conformance?
- A: Yes, a certificate of conformance (CoC) is available upon request at no additional charge.
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