What does MCOV or COV (UC) rating of a surge arrester mean?

MCOV stands for the Maximum Continuous Operating Voltage. COV or UC stands for Continuous Operating Voltage. They represent the power frequency voltage that may be continuously applied to a surge arrester.

The MCOV / COV selected for a given system voltage is a function of the maximum line-to-line voltage as well as the system grounding parameters. Hubbell Power Systems, Inc. representatives can assist find the proper MCOV / COV selection for your specific requirement. 

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