GE Multilin UR-67H / UR67H UR Series Digital I/O Module

Description

The GE Multilin UR-67H is a hardware expansion component developed for the Universal Relays platform that provides 8 Form-A digital outputs to manage critical signaling and control sequences within electrical substation power systems. This card interfaces directly with the relay backplane, allowing internal automated control logic to actuate external high-voltage equipment, interlocking auxiliary networks, and circuit breaker systems safely.

The primary function of the UR-67H is to transition internal digital metrics into physical, macro-level system actions. By translating processed signals into dry-contact mechanics, this card links auxiliary plant machinery with central protective devices such as the B30 Bus Differential Relay. The output configuration features standard mechanical contacts that operate without built-in electronic latching or hardware monitoring loops, minimizing secondary circuit load. Parameterization, contact routing rules, and status monitoring tasks are handled uniformly through standard EnerVista setup software interfaces.

Features

• Form-A Mechanical Contacts: Built with 8 independent Form-A (normally open) discrete relay outputs to execute heavy-duty physical control commands.
• Non-Latching Architecture: Utilizes standard non-latching, non-monitoring contacts appropriate for direct trip and momentary signal configurations.
• System Density Scaling: Expands the Universal Relays base capabilities, which collectively support configurations up to 96 contact inputs and 64 contact outputs per chassis.
• EnerVista Management: Integrated into the EnerVista logic setup network for streamlined contact mapping, logic testing, and diagnostics.

Applications

• Substation Breaker Tripping: Deployed in configurations like the B30 bus differential system to manage physical trip lines for breaker separation.
• Automation Safety Interlocking: Establishes mechanical state indicators across switchyard apparatus and interlocking guard circuits.
• Auxiliary Equipment Monitoring: Interfaces with local field machinery to exchange binary state signals with the central protective relay.

Technical Specifications

Installation Guidelines

• Control Power Isolation: Turn off and isolate all operational power lines and secondary voltage sources connected to the relay enclosure before extracting or sliding in the card.
• Electrostatic Discharge Protection: Technicians must utilize an approved grounding wrist strap during hardware installation to prevent latent electrostatic discharge damage to integrated logic components.
• Model Suffix Verification: Review the original equipment ordering breakdown matrix; slots labeled with "XX" specify unpopulated chassis voids available for physical field upgrades or retrofitting with this module type.
• Module Seating: Push the hardware card evenly along the dedicated chassis enclosure guide tracks until the rear edge connection pins align and seat firmly into the backplane socket. Secure the front faceplate thumb screws.