GE Multilin UR8GH UR 8GH CT/VT Ground Protection Module

Product Overview

The GE UR8GH is a high-performance CT/VT Ground Protection Module designed for advanced power system monitoring. It converts high-voltage signals from current and voltage transformers into relay-compatible inputs with exceptional accuracy. Moreover, it enables sensitive ground fault detection and integrates seamlessly with GE Multilin UR-series relays for comprehensive system protection. Engineers rely on its robust diagnostics and modular design to optimize reliability in industrial automation and power distribution environments.

Key Features & Functional Highlights

• Sensitive Ground Fault Detection: Detects ground faults ten times more accurately than standard CT/VT modules.

• Advanced Diagnostics: Monitors CT/VT signal integrity and alerts operators via EnerVista UR software or on-device LCD.

• Flexible Integration: Supports phase differential, split-phase, and bus protection configurations for diverse relay schemes.

• Modular Design: Easily compatible with other UR-series modules, ensuring scalable and future-proof installations.

• Safety Mechanisms: Automatically short-circuits when removed from housing to prevent electrical hazards.

• Analog Input Capability: Accepts 4–20 mA signals for temperature, water level, or process variable monitoring.

Technical Specifications

• Operating Voltage: 220 V AC

• Processing Speed: 15 Hz

• Program/Data Capacity: 2 MB / 1 MB

• Operating Temperature: –40 °C to +70 °C

• Dimensions: 102.2 cm x 12.4 cm x 12.6 cm

• Weight: 0.2 kg

• Communication Interfaces: RS232, optional Ethernet

• Software Support: EnerVista UR software

• Mounting: Modular rack design

Typical Applications

• Power Generation & Distribution: Generator and bus protection, voltage and current monitoring.

• Industrial Automation: Contactor control, interlock protection, and remote operation.

• Energy Management: Gas and steam turbine protection and monitoring.

• Process Control: Monitoring of analog process variables such as temperature or water levels.

FAQ

Q1: Can the UR8GH module integrate with existing GE UR-series relays?
A1: Yes, the UR8GH fully supports integration with other UR-series modules for scalable protection systems.

Q2: What types of faults can it detect?
A2: It detects ground faults, phase differential faults, and supports split-phase protection configurations.

Q3: How does the module handle signal diagnostics?
A3: Built-in algorithms monitor CT/VT signal integrity and report anomalies via LCD or EnerVista software.

Q4: Is the module suitable for harsh environments?
A4: Yes, it operates reliably between –40 °C and +70 °C and features robust modular housing.