GE UR8MH: Universal Relay Digital Input/Output Module

GE Multilin UR-8MH Technical Specifications

Model Number: UR-8MH
Manufacturer: General Electric Multilin
Manufacturing Location: Ontario, Canada
Weight: 2.55 lbs
Dimensions: Approximately 6" L × 7" W × 1.5" H

About the UR-8MH

The GE Multilin UR-8MH is a CT/VT module designed to enhance Universal Relays by providing sensitive ground measurement capabilities with 4 CTs (Current Transformers) and 4 VTs (Voltage Transformers), along with advanced diagnostics.

• CT (Current Transformer): Scales down current levels too high for the relay to handle.

• VT (Voltage Transformer): Scales down voltage levels to safe ranges for monitoring.

Once installed, the module enables the relay to accurately monitor current and voltage values, allowing it to respond effectively to changes and conditions within the power system.

Features and Functionality

• The Universal Relays manuals offer detailed connection procedures, including wiring diagrams and guidelines to ensure optimal efficiency.

• Voltage inputs can be connected on channels 1 through 4 or channels 5 through 8. For example:

• Channels 1 and 5 connect to phase A

• Channels 2 and 6 connect to phase B

• Channels 3 and 7 connect to phase C

• Channels 4 and 8 connect to ground or neutral

• The UR-8MH is highly versatile, supporting multiple configurations and protection schemes, such as:

• Concurrent split-phase protection

• Differential protection

• The module is customizable through wiring arrangements and relay setting adjustments, allowing adaptation to specific power system requirements.