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Product Description

High-Density Substation Control Interface

The UR8LH (Model: UR8LH) is a high-density digital output module engineered for the GE Multilin Universal Relay (UR) series. Specifically designed to provide 24 independent Form-A (Normally Open) relay outputs, the UR8LH (Part Number: UR8LH) serves as the critical execution interface between the relay's protective logic and substation primary equipment. This module is essential for complex automation schemes requiring multiple control points, such as circuit breaker trip/close commands, lockout relay actuation, and multi-stage alarm signaling.

Detailed Technical Specifications

The UR8LH (UR8LH) is optimized for high-speed switching and robust electrical isolation in harsh EMI environments typical of utility-grade power systems.

  • Manufacturer: GE Multilin (General Electric)

  • Model Number: UR8LH

  • Module Series: Universal Relay (UR) Series

  • Output Configuration: 24 Form-A (Normally Open) Contacts

  • Contact Rating (Resistive): 10 A @ 250 VAC / 30 VDC

  • Contact Rating (Inductive): Designed for L/R = 40ms DC loads (Breaker Coils)

  • Switching Speed: < 8 ms typical pickup time

  • Dielectric Strength: 2 kV AC for 1 minute (Field-to-Logic isolation)

  • Internal Diagnostics: Continuous drive circuit monitoring and hardware self-test

  • Operating Temperature: -40°C to +85°C (Extended utility range)

  • Configuration Interface: EnerVista UR Setup Software

  • Hardware Profile: Single-slot plug-in module

  • Compliance Standards: IEEE C37.90, UL, CSA, CE

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