Description
The GE Multilin G60-U01-AKH-F8L-H67-M8L-P6D-U6D-W6C is a modular, microprocessor-based protection and management relay belonging to the GE Universal Relay (UR) family. It provides comprehensive protection, control, and metering for medium to large utility and industrial synchronous generators. The alphanumeric model suffix defines a specific hardware build, indicating the installed CPU, power supply, CT/VT measurement transformers, and discrete digital I/O cards within the 19-inch rack-mount chassis.
Commercial Supply Status
- Condition: New Original (New Surplus), Factory Sealed
- Availability: In stock
- Lead Time: 1–3 business days
- Warranty: 12 months
- Pricing Note: Price subject to market conditions; contact us for a firm quote.
Field Engineering & Integration Notes
In field deployments of UR-series protection systems, engineering teams frequently interface the G60 with distributed control systems (DCS) or substation automation networks using the IEC 61850 protocol or Modbus TCP. The specific module options specified in this code indicate an extensive, I/O-heavy field application—common in plants requiring dual-breaker configurations, extensive breaker status tracking, or complex interlocking logic.
During 2 AM commissioning or fault diagnostic cycles, verify the internal module health statuses via the front HMI panel or EnerVista UR Setup software. If a hardware module fails or requires replacement, the UR chassis allows for individual card extraction via the rear terminal blocks. However, ensure the main control power supply is fully de-energized before removing or inserting any card to prevent diagnostic bus logic crashes or arc damage to the backplane connectors.
Hardware Configuration Code Breakdown
- G60: Base model designation for the Generator Protection System.
- U01: CPU module type and advanced firmware configuration package, providing standard protection algorithms plus specific automation, metering, and protocol logic.
- AKH: Mechanical, faceplate, and power supply option block (typically specifies a standard display faceplate and a High-Voltage AC/DC power supply module operating at 70–265 V AC / 90–300 V DC).
- F8L / M8L: Current/Voltage Transformer (CT/VT) interface modules installed in slots F and M, enabling multi-source measurement for generator differential (87G) and split-phase configurations.
- H67 / P6D / U6D / W6C: Digital Input/Output modules populated in their respective chassis slots (H, P, U, W), supplying the physical contact inputs for breaker auxiliary contacts and form-trip rated outputs.
Technical Specifications
| Parameter | Value |
| Control Voltage Range | 70 to 265 V AC (50/60 Hz) / 90 to 300 V DC |
| Chassis Form Factor | 19-inch Rack Mount (4U height profile) |
| Processor Platform | High-speed digital signal processor (DSP) with RISC coprocessor |
| Communication Protocols | Modbus RTU/TCP, DNP3, IEC 61850, IEC 60870-5-104 |
| Protection Functions | Generator Differential (87G), 100% Stator Earth Fault, Phase Overcurrent (50/51) |
| Metering Accuracy | Current/Voltage magnitude accuracy: ±0.25% of reading |
| Event Recorder Capacity | 1,024 time-tagged events, microsecond resolution |
| Oscillography | Up to 64 samples per cycle, flexible trigger allocation |
| Operating Temperature | −40 to +60 °C (−40 to +140 °F) |
| Storage Temperature | −40 to +85 °C (−40 to +185 °F) |
| Relative Humidity | 5 to 95% (non-condensing configuration standard) |
Frequently Asked Questions
- Q: Can I flash firmware updates to the U01 CPU module directly over the Ethernet port?
- A: Yes. You can flash firmware updates using the EnerVista UR Setup tool through either the front panel USB/RS-232 connection or the rear Ethernet interface. Back up the existing
.urssettings file prior to flashing, as firmware updates can change the internal register mapping and wipe active configuration files.
- A: Yes. You can flash firmware updates using the EnerVista UR Setup tool through either the front panel USB/RS-232 connection or the rear Ethernet interface. Back up the existing
- Q: What type of internal CT/VT inputs do the 8L codes denote?
- A: The 8L module typically designates a standard Universal Relay measurement card providing specific configurations of 1 A or 5 A current transformer secondary inputs and standard voltage transformer inputs. Review the exact hardware sub-manual or the OEM datasheet to verify the current input ranges and saturation limits before secondary injection testing.
- Q: How do I handle a “Module Missing” error on the front display panel after a field replacement?
- A: This error indicates a mismatch between the hardware configuration programmed into the relay software and the physical cards detected in the backplane slots. Connect via EnerVista, access the Hardware Configuration menu, read the physical chassis state, and update the software layout file to match the exact slot locations.
- A: This error indicates a mismatch between the hardware configuration programmed into the relay software and the physical cards detected in the backplane slots. Connect via EnerVista, access the Hardware Configuration menu, read the physical chassis state, and update the software layout file to match the exact slot locations.
