Rated - Nominal Voltage
Rated - Nominal Voltage
(OP)
What is the difference between RATED voltage and NOMINAL voltage of a switchgear.
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
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RE: Rated - Nominal Voltage
Nominal System Voltage is a nominal value assigned to designate a system of a given voltage class. For example, in the 15 kV voltage class, a Nominal System
Voltage may be 13.8 kV, or 12.47 kV, or other.
Rated Voltage: The maximum voltage at which an electric component can operate for extended periods without undue degradation or safety hazard.
David Baird
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Sr Controls Engineer
EET degree.
Journeyman Electrician.
RE: Rated - Nominal Voltage
An oft-referenced root document published by NEMA is ANSI C84.1-1995 AMERICAN NATIONAL STANDARD for Electric Power Systems and Equipment—Voltage Ratings (60 Hertz). In the US, it seems to have tremendous legal significance with respect to electrical systems and related commerce.