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IEC 60255-127:2010 ed1.0

Действует
Measuring relays and protection equipment - Part 127: Functional requirements for over/under voltage protection — 49 стр.
IEC 60255-127:2010 specifies minimum requirements for over/under voltage relays. The standard includes specification of the protection function, measurement characteristics and time delay characteristics.
ICS
29.120.70 Relays / Реле