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SRPS EN 60255-149:2015

Measuring relays and protection equipment - Part 149: Functional requirements for thermal electrical relays

May 29, 2015

General information

60.60     May 29, 2015

ISS

N094

European Norm

29.120.70  

English  

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Scope

IEC 60255-149:2013 specifies minimum requirements for thermal protection relays. This standard includes specification of the protection function, measurement characteristics and test methodologies. The object is to establish a common and reproducible reference for evaluating dependent time relays which protect equipment from thermal damage by measuring a.c. current flowing through the equipment. Complementary input energizing quantities such as ambient, coolant, top oil and winding temperature may be applicable for the thermal protection specification set forth in this standard. This standard covers protection relays based on a thermal model with memory function.

Life cycle

PREVIOUSLY

WITHDRAWN
SRPS EN 60255-8:2008

NOW

PUBLISHED
SRPS EN 60255-149:2015
60.60 Standard published
May 29, 2015

Related project

Adopted from EN 60255-149:2013