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

BS EN 60255-149:2013

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

Status : Current   Published : October 2013

Format
PDF

Format
HARDCOPY



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.




Standard NumberBS EN 60255-149:2013
TitleMeasuring relays and protection equipment. Functional requirements for thermal electrical relays
StatusCurrent
Publication Date31 October 2013
Normative References(Required to achieve compliance to this standard)IEC 60085:2007, EN 61850-7-4, IEC 61850-7-4, IEC 60255-1, EN 60085:2008, IEC 60050, EN 60255-1
Informative References(Provided for Information)ANSI/IEEE Std. 37.96, ANSI/IEEE Std. 620, IEC 60947-4-2, IEC 61850-9-2, IEC 60947-4-1:2018, IEC 60034-11, BS EN 60947-4-1:2018
ReplacesBS EN 60255-8:1998
International RelationshipsEN 60255-149:2013,IEC 60255-149:2013
Draft Superseded By11/30244275 DC
DescriptorsElectric current, Relays, Thermal testing, Switchgear, Protective relays, Error detection, Testing conditions, Current measurement, Switches, Working range, Electrical protection equipment, Standard tolerances, Measuring relays, Circuits, Operating time, Electrical testing, Accuracy, Thermal protection, Time, Performance testing
ICS29.120.70
Title in FrenchRelais de mesure et dispositifs de protection. Exigences fonctionnelles pour les relais électriques thermiques
Title in GermanMessrelais und Schutzeinrichtungen. Funktionsanforderungen an den thermischen Überlastschutz
CommitteePEL/95
ISBN978 0 580 74965 0
PublisherBSI
FormatA4
DeliveryYes
Pages50
File Size909 KB
Price£240.00


 Your basket
Your basket is empty

Multi-user access to over 3,500 medical device standards, regulations, expert commentaries and other documents


Worldwide Standards
We can source any standard from anywhere in the world


Collaborate, Innovate, Accelerate.


Tracked Changes

Understand the changes made to a standard with our new Tracked Changes version