Description
The UR6EH (often referred to as Module 6E) is a high-performance, modular Digital Input/Output (I/O) card engineered for the GE Multilin Universal Relay (UR) series platform (including protective relays like the G60, B30, L90, and C60).
This module functions as a critical hardware interface layer, allowing the host protection relay to monitor high-speed binary status signals from substation equipment (such as circuit breaker auxiliary switches, disconnector positions, and pressure switches) and execute high-speed control or tripping commands.
Technical Specifications
| Parameter | Specification / Value |
| Brand | GE Multilin / GE Vernova |
| Model / Hardware Code | UR6EH (Module Option Type 6E) |
| Equipment Class | Modular Protection Relay I/O Card |
| Channel Density | 16 Digital Inputs / High-Speed Form A (Tripping) Outputs (Configuration dependent) |
| Isolation Barrier | Galvanic and optoelectronic isolation up to 2 kV AC across field circuits |
| Response Speed | Fast-acting solid-state/mechanical hybrid switching paths for protective tripping |
| Environmental Protection | Factory conformal coating standard for harsh substation environments |
| Chassis Slot Compatibility | Fits any standard full-height auxiliary I/O slot (Slots F through M) in a UR chassis |
Field Application and System Integration Notes
The “Universal Relay” Slot Architecture
The GE Multilin UR series utilizes a fully customizable backplane. The exact model ordering code of your relay specifies which cards populate the rear slots. The UR6EH is frequently procured to expand binary telemetry capacity or replace legacy modules degraded by highly inductive field switching stresses.
High-Speed Tripping Capabilities
A distinguishing feature of the “E” variant (6E/UR6EH) compared to some standard I/O blocks is its optimization for high-speed output operation.
- Direct Breaker Tripping: The contacts are designed to handle the heavy inductive inrush current of circuit breaker trip coils, operating quickly enough to satisfy modern critical fault-clearing windows (typically executing commands in under 4–8 milliseconds).
- Software Configuration: Use GE EnerVista UR Setup software to bind these inputs/outputs to internal programmable logic equations (FlexLogic). Each input channel can be assigned an explicit debounce filter window (typically 2 to 4 ms) to prevent high-voltage contact arcing or induced EMI from triggering false logic states.
Maintenance and Replacement Warning
⚠️ Warning: Always completely isolate the relay’s auxiliary control power and short/disconnect active current/voltage sensing blocks before unscrewing and extracting the UR6EH module. Hot-swapping I/O cards can disrupt the internal high-speed serial backplane bus, causing a temporary relay “Major Alarm” drop or inducing an accidental machine trip.
Commercial and Procurement Data
- Product Condition: New Original (Factory Boxed) or Certified Refurbished Legacy Surplus (fully component-tested, including high-voltage contact resistance and optocoupler turn-on threshold validation reports).
- Standard Warranty: 12-month comprehensive depot warranty from the date of logistics dispatch.
- Estimated Lead Time: In-stock processing takes 1 to 3 business days. Worldwide courier shipping options are standard for operational emergency scenarios.
- Pricing Notice: Prices fluctuate based on regional conformity markings, active factory hardware revisions, and material availability. Contact our substation automation sales group for a formal commercial proposal.
