IEC 60255-149 Ed. 1.0 b:2013

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

Best Price Guarantee Jul 1, 2013 EN/FR 98 Pages

Sub Total (1 Item(s)) $ 0.00
Estimated Shipping $ 0.00
Total (Pre-Tax) $ 0.00
View in Library
or
International Electrotechnical Commission Logo

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

PUBLISH DATE 2013
PAGES 98

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

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.

Loading...

Failed to load document history.

Publish Date Document Id Type View