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FprEN 60255-127
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IEC 60255-127:200X; FprEN 60255-127:2009
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Measuring relays and protection equipment - Part 127: Functional requirements for over/under voltage protection
Käsitlusala:
This part of IEC 60255 specifies minimum requirements for over/under voltage relays. The standard includes specification of the protection function, measurement characteristics and time delay characteristics. This part of IEC 60255 specifies defines the influencing factors that affect the accuracy under steady state conditions and performance characteristics during dynamic conditions. The test methodologies for verifying performance characteristics and accuracy are also included in this standard.
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