GE Multilin UR67H Digital Input Module for Universal Relay Systems

Functional Overview

The General Electric UR67H serves as a high-density digital interface designed specifically for the Multilin Universal Relay (UR) platform. This module expands the monitoring capabilities of power system protection schemes by providing eight dedicated digital input channels. It facilitates the real-time acquisition of status data from primary equipment, such as circuit breakers, disconnect switches, and external sensors. By converting physical contact closures into digital signals, the UR67H enables the central processing unit to execute complex logic for protection, control, and automation sequences across utility and industrial power networks.

Technical Specifications and Characteristics

• Manufacturer: General Electric (GE) Multilin
• Model Identifier: UR67H
• Input Configuration: 8 Independent Digital Inputs
• Series Compatibility: Multilin Universal Relay (UR) Family (e.g., B30, C60, G60, L90)
• Signal Processing: High-speed contact sensing with programmable debouncing filters
• Physical Dimensions: 16.3 x 4.2 x 21 cm
• Net Weight: 0.66 kg
• Customs Tariff Code (HS Code): 8537101190
• Manufacturing Origin: United States of America

Core Applications and Integration

Engineers typically deploy the UR67H in environments requiring robust electromagnetic compatibility and high reliability. The module integrates seamlessly into the UR chassis, where it contributes to comprehensive substation automation. Furthermore, its hardware design prioritizes low latency, which is essential for time-critical tripping logic and sequence-of-events (SOE) recording. Because it supports a wide range of voltage thresholds, the module remains adaptable to various station battery voltages. Consequently, this flexibility ensures that the UR67H can monitor auxiliary equipment status without requiring additional interposing relays, thereby simplifying the overall wiring architecture.

Operational Advantages

The implementation of the UR67H module significantly improves the diagnostic depth of a protection relay system. Since the module communicates directly with the internal bus of the Multilin relay, it eliminates the communication delays often found in external I/O solutions. Additionally, the rugged construction complies with stringent utility standards for vibration and temperature resilience. Therefore, this module provides a stable interface for critical feedback loops, ensuring that the protection system receives accurate data even during severe electrical faults or environmental stress.