UR-9DH

About the UR-9DH

A CPU module in the Universal Relays series, General Electric Multilin’s UR-9DH supplies the relay with logic algorithms and computing power that governs the protective capabilities of the relay. It also supports other modules in the series and the data they collect/functions they execute, most notably the CT/VT module. The CPU module is so impactful on the input/output functions of the CT/VT module that both modules must be from a similar release date, with older modules being paired together and newer modules being paired together.

Aside from supplying computing capabilities, the Universal Relays CPU module also equips the system with Ethernet capabilities if users purchase a module with that option. Other module options include Parallel Redundancy Protocol, and IEEE 1588.

Users should note the location of the old CPU module when installing the new one, as modules can only be replaced with like modules. The Universal Relays series is built with scalability in mind, so accessing the module bay is easy when referencing the Universal Relays user manuals. The faceplates are designed to conveniently open after either depressing latches or removing a screw, allowing quick access to the module bay.