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  GE UR8HH UR Series Universal Relays

Product Description

General Electric Multilin’s UR-8HH is a CT/VT module intended for installation in the Universal Relays series. It provides the relay with 1A/5A ground CTs and 3-1A/5A phase CTs, allowing the relay to scale down current ratings and voltage ratings to a value that enables the relay to monitor these system conditions and output data for user review. The data can then be employed for protective system functions executed by the relay itself. This data can be viewed through the relay’s liquid-crystal display or more efficiently through Multilin’s EnerVista UR software program.

EnerVista UR also allows efficient configuration of settings related to the CT/VT module, allowing for highly customized schemes that address needs unique to each individual user’s system. Additionally, the streamlined design of EnerVista UR allows users to easily review data in a beautiful, well laid out user interface. EnerVista’s Viewpoint UR Engineer also features a drag-and-drop environment that allows for rapid commissioning of the relay and associated modules.

Prospective buyers concerned about installation time will find that General Electric has designed the Universal Relays series with scalability in mind. The faceplate of the device can be unhinged (on both the enhanced and basic models of the relays) to allow access to the module bay, and Multilin provides a vast amount of information and diagrams on proper module wiring in their various product manuals. 

Frequently Asked Questions about UR-8HH

What is the function of the UR-8HH found within the universal relay T35?

The T35 is a basic transformer protection system that has the capacity to provide protection to main power transformers and to five feeders downstream from the main power transformer. The T35 can either run automatically or can be user defined using magnitude reference winding selection. In either case, the T35 can provide phase shift compensation, CT ratio matching, and can even allow the operator to eliminate zero-sequence current. 

What are the components of a UR series Multilin universal relay?

The UR-8HH is one of many components found within universal Multilin relays such as the T35 base transformer protection system. The UR universal relay GE Multilin contains CT/VT modules, such as the UR-8HH, in addition to a digital input/output module, a power supply (sometimes dual power supplys), a transducer input/output module, a central processing unit (CPU), inter relay communication features with a communication switch, and an IEC Process Bus. Each of these components can be specified with different ordering options to tailor the precise features to the type of UR series universal relay that is desired for the end application. In this way, the universal relays function as a comprehensive, custom, advanced technological solution to the end user.

Reviews For UR-8HH

Internal Review

     (5.0)

As the UR-8HH is produced by General Electric Multilin, there is a wide range of technical support offered by this prestigious company. The extensive nature of Multilin’s manuals combined with their automatic updating of system information in EnerVista UR means users will not lack comprehensive information on their module or Universal Relay, making the unit an excellent purchase. -AX Control Tech Team