
Measuring Relays And Protection Equipment - Part 127: Functional Requirements For Over/Under Voltage Protection
出版:British Standards Institution

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Specifies minimum requirements for over/under voltage relays. And it includes specification of the protection function, measurement characteristics and time delay characteristics.
Together with BS EN 60255-151, it supersedes BS EN 60255-3. Supersedes 08/30186712 DC. (02/2014)
EN 60255-127:2014 - Identical