UR9EH|Used to replace a failed module or upgrade a general purpose relay family unit
General Electric Multilin’s UR-9EH is a CPU module designed to replace a failed module or upgrade an older module in a General purpose relay family unit. The module provides computing power for relays in the form of logic algorithms, logic gates, latches and timers. The CPU module does not require a surge ground connection.
Users should note that the new CPU module must be used with the new CT/VT module; Similarly, the old CPU module must be used with the old CT/VT module. Doing so will result in the display of a HARDWARE MISMATCH or DSP ERROR, so users should ensure that the module they purchase is appropriate for the appropriate age of their module.
GE Multilin’s UR-9EH has many configurable Settings that affect CPU functionality and can be modified using the keyboard and panel or the EnerVista UR. For example, the SERVER SCANNING feature can be disabled to increase CPU resources, which is particularly useful for users who do not need the IEC 61850 client/server feature. The plug-and-play capability of the CPU module also automatically establishes basic CPU Settings, which relieves the burden of overall programming on the user and allows the user to focus on optimizing the Settings instead of starting from scratch.
Frequently Asked Questions about UR-9EH
How do I identify the UR-9EH CPU in UR Series Universal Multilin GE relays?
UR Multilin series of general purpose relays has a wide variety of functions and applications. The two generations of UR relays are G60 and G30. The G60 is designed for medium or large generators (primary protection and backup protection), and the G30 is designed for medium and small generators, providing comprehensive monitoring functions in addition to protecting the generator. In addition, most UR relays fall into the transmission or distribution category. For example, L30 provides line current differential protection for secondary transmission lines, while D30 provides backup distance protection for transmission systems. In addition to the UR relays briefly mentioned here, there are more than 18 UR relays. Whether the universal relays are vertical (3/4 size) or horizontally mounted relays, each of these universal relays is equipped with a CPU. A CPU can be identified by the RH-9 part description, followed by a letter that specifies the specific characteristics of that CPU. Cpus in categories 9A, 9C, or 9D will belong to the old module type, and the other letters (9E and 9S) will indicate the new CPU module included in the general purpose relay.
UR6AH |
UR6CH |
UR6DH |
UR6EH |
UR6UH |
UR8FH |
UR8HH |
UR8LH |
UR9AH |
UR9EH |