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BSI BS EN 60255-149:2013

Measuring relays and protection equipment -- Functional requirements for thermal electrical relays
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BSI BS EN 60255-149:2013

Measuring relays and protection equipment -- Functional requirements for thermal electrical relays

PUBLISH DATE 2013
PAGES 50
BSI BS EN 60255-149:2013
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.
SDO BSI: British Standards Institution
Document Number EN 60255-149
Publication Date Oct. 31, 2013
Language en - English
Page Count 50
Revision Level
Supercedes
Committee PEL/95
Publish Date Document Id Type View
Oct. 31, 2013 BS EN 60255-149:2013 Revision