Product Core Brief
- Model: 760-P1-G1-S1-LO-A20-R-E
- Brand: GE Multilin (GE Vernova / SR Family)
- Series: GE 750/760 Enhanced Feeder Management Relay
- Core Function: Enhanced version of the SR760 feeder management relay for primary protection, control, and monitoring of distribution feeders.
- Product Type: Feeder Management / Protection Relay (Enhanced Panel)
- Key Specs: 1 A CT inputs | 1 A zero-sequence | 1 A sensitive ground | RS485 serial | 8×4–20 mA analog outputs | 20–48 VAC control power | draw-out case | enhanced LCD/keyboard
- Condition: New Surplus / Refurbished (manufacturing discontinued; 850 series recommended as current alternative)
Product Introduction
The GE Multilin 760-P1-G1-S1-LO-A20-R-E is the Enhanced version of the SR760 Feeder Management Relay. Compared with the standard 760-P1-G1-S1-LO-A20-R, the trailing -E indicates an enhanced front panel with a wider LCD display and a streamlined keyboard layout, as introduced in GE Multilin’s 750/760 firmware release notes. The protection functions, I/O configuration, and communication options remain consistent with the base 760 order code.
This relay is designed for primary protection and management of medium- and low-voltage distribution feeders on solidly grounded, high-impedance grounded, or resonant grounded systems. It combines overcurrent and ground-fault protection with metering, event recording, waveform capture, and programmable I/O — all housed in a draw-out case for fast replacement.
The order code breaks down as follows:
- 760: Feeder management relay with auto-reclose capability
- P1: 1 A phase current inputs
- G1: 1 A zero-sequence (ground) current input
- S1: RS485/RS422 serial communications
- LO: Low-range control power, 20–48 VAC at 48–62 Hz
- A20: Eight 4–20 mA analog transducer outputs
- R: Standard relay configuration
- E: Enhanced front panel (wider LCD, streamlined keyboard)
GE Vernova has discontinued manufacturing of the 750/760 family and recommends the 850 series as the current replacement platform.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | Feeder Management Relay (Enhanced) |
| Brand | GE Multilin (SR Family) |
| Model | 760-P1-G1-S1-LO-A20-R-E |
| Phase Current Input | 1 A (P1) |
| Zero-Sequence Input | 1 A (G1) |
| Sensitive Ground Input | 1 A (S1) |
| Control Power | 20–48 VAC, 48–62 Hz (LO) |
| Communications | RS485/RS422 serial (Modbus RTU, DNP3); front-panel RS232 for EnerVista |
| Analog Outputs | 8 × 4–20 mA (A20) |
| Front Panel | Enhanced: wider LCD, streamlined keyboard layout |
| Protection Functions | Phase/ground overcurrent (50/51/67), sensitive ground (50SG/51SG/67SG), negative sequence (46), undervoltage (27), overvoltage (59), under/over frequency (81), reverse power (32), synchrocheck, auto-reclose (4-shot) |
| Construction | Draw-out case |
Exact firmware-dependent features and optional interfaces should be verified against the relay nameplate.
Quality Control Process (DYNAMIC GENERATION)
- Order-code and suffix verification: Confirm full code 760-P1-G1-S1-LO-A20-R-E, especially the -E enhanced panel designation.
- Visual and mechanical inspection: Check draw-out cradle, connector pins, enhanced LCD, keyboard, LEDs, and rear terminal blocks.
- Control power test: Apply 20–48 VAC and verify relay boot-up, enhanced LCD display, and LED indicators.
- CT input and metering check: Inject 1 A secondary current; verify phase, ground, and sensitive ground metering accuracy.
- Protection function test: Validate overcurrent, ground-fault, and reclose logic; verify trip contacts and 4–20 mA analog outputs.
- Communication test: Confirm RS485 Modbus/DNP3 communication and RS232 connection to EnerVista software.
Replacement Pitfall Guide (DYNAMIC GENERATION)
❗ -E is an enhanced front panel, not a different protection model. The -E suffix denotes a wider LCD and streamlined keyboard; it does not change CT ratings, control power, or I/O configuration.
❗ Do not confuse P1 with P5. P1 = 1 A CT inputs; P5 = 5 A CT inputs. Installing a P5 unit on a 1 A CT circuit will produce incorrect metering and protection errors.
❗ Do not substitute LO with HI without verifying control power. LO = 20–48 VAC; HI = 88–300 VDC or 70–265 VAC.
❗ Confirm the communications option. S1 = RS485/RS422 serial. If the site requires Ethernet, a different suffix is needed.
❗ 760 vs. 750 matters. The 760 includes auto-reclose; the 750 does not.
❗ Manufacturing is discontinued. GE Vernova recommends the 850 series as the current replacement platform.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| GE 760-P1-G1-S1-LO-A20-R-E | GE 760-P1-G1-S1-LO-A20-R-E | Direct | Match full order code including -E enhanced panel. |
| GE 760-P1-G1-S1-LO-A20-R-E | GE 760-P1-G1-S1-LO-A20-R | Functional Equivalent | Same protection/I/O; standard panel instead of enhanced. |
| GE 760-P1-G1-S1-LO-A20-R-E | GE 760-P5-G5-S5-LO-A20-R-E | Not Direct | Different CT ratings (1 A vs. 5 A); not interchangeable. |
| GE 760-P1-G1-S1-LO-A20-R-E | GE Multilin 850 series | Migration | GE Vernova’s recommended successor; requires engineering review. |
Benchmarks:
- SR760 enhanced feeder management relay with 1 A phase, ground, and sensitive ground CT inputs.
- Enhanced front panel with wider LCD and streamlined keyboard layout.
- Low-voltage AC control power (20–48 VAC), RS485 serial communications, 8×4–20 mA analog outputs.
- Draw-out construction for fast replacement without disturbing panel wiring.
- Manufacturing discontinued; 850 series is the current GE Vernova replacement platform.
