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GE Multilin UR8FH Universal Relay 8-Channel Analog Input Module

The UR8FH (Model: UR8FH) is a high-precision Analog Input Module (AIM) specifically engineered for the GE Multilin Universal Relay (UR) series. As a critical interface for power system monitoring, the UR8FH (Part Number: UR8FH) facilitates the acquisition of secondary signals from Current Transformers (CTs) and Potential Transformers (PTs). It translates these high-voltage/high-current electrical variables into a 16-bit digital format that the relay's central processing unit can use for protective logic, metering, and oscillography.

Built for utility-grade reliability, the UR8FH (Model: UR8FH) ensures signal integrity through comprehensive galvanic and optical isolation. This architecture prevents severe system transients—such as those occurring during a primary fault—from reaching the sensitive microprocessor backplane. The module is capable of supporting both current and voltage acquisition, making it the backbone for functions like overcurrent protection, distance elements, and power quality monitoring. Its wide operating temperature range ensures consistent performance in the most demanding substation environments, upholding the E-E-A-T (Expertise, Authoritativeness, Trustworthiness) standards of the GE Multilin series.

Detailed Technical Specifications

The UR8FH (Model: UR8FH) is optimized for high-speed sampling and precise conversion of analog waveforms.

Feature Details
Manufacturer GE Multilin (General Electric)
Model Number UR8FH
Series Universal Relay (UR) Series
Module Type Analog Input Module (AIM)
Channels 8 independent analog input channels
A/D Conversion 16-bit resolution
Signal Compatibility AC Current (CT) and AC Voltage (PT)
CT Input Nominal 1 A or 5 A (Configurable via relay order code)
PT Input Nominal Up to 300 V AC
Accuracy ±0.2% of full scale
Frequency Support 50 Hz and 60 Hz systems
Isolation 2 kV AC dielectric strength
Operating Temperature –40°C to +85°C
Software Support EnerVista UR Setup software
Dimensions 170 mm x 105 mm x 32 mm
Weight 0.45 kg

 

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