Product Description
General Electric Multilin’s UR-8FH is a CT/VT module designed for installation in the Universal
Relays series. It provides the relay with 3-1A/5A phase current transformers, 1A/5A ground current
transformers, and four voltage transformer terminals. Current transformers and voltage transformers are
capable of scaling down current and voltages to manageable levels for relay monitoring and control,
and are necessary for producing vital data for the relay.
The CT/VT module can employ voltage or contact inputs on channels one through four inclusive or channels
five through eight inclusive. The UR manuals provide further information on proper relay connections, indicating
important particulars such as how channels one and five are intended for connection to phase A, channels
two and six are intended for connection to phase B, etc. The manuals also supply integral warnings and notices
to the user, like how connections made to the relay terminals for nominal current of 1 A or 5 A must match the
secondary rating of the connected CTs, lest the user desires to incur system damage. In summary, it is important
for users to carefully peruse the Universal Relay manuals before beginning the process of making relay connections.
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