IEC 61251-ed.1.0

Detail information

Designation: IEC 61251-ed.1.0

Publication date: 18/11/2015

Pages: 42

Country: International technical standard

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Anotation

IEC 61251:2015 describes many of the factors involved in voltage endurance tests on electrical insulating materials and systems. It describes the voltage endurance graph, lists test methods illustrating their limitations and gives guidance for evaluating the sinusoidal a.c. voltage endurance of insulating materials and systems from the results of the tests. This International Standard is applicable over the voltage frequency range 20 Hz to 1 000 Hz. The general principles can also be applicable to other voltage shapes, including impulse voltages. The terminology to be used in voltage endurance is defined and explained. This first edition of IEC 61251 cancels and replaces the second edition of IEC TS 61251, published in 2008. This edition constitutes a technical revision and includes the following significant technical changes with respect to the second edition of IEC TS 61251: a) upgrade from Technical Specification to an International Standard; b) clarification of issues raised since publication of IEC TS 61251. LIEC 61251:2015 decrit plusieurs des facteurs intervenant dans les essais dendurance a la tension de systemes et de materiaux isolants electriques. Elle decrit le graphe dendurance a la tension, donne une liste des methodes dessai en indiquant leurs limites et donne des lignes directrices pour evaluer lendurance a la tension alternative de systemes et de materiaux isolants a partir des resultats des essais. La presente Norme internationale est applicable sur la plage de frequences de la tension allant de 20 Hz a 1 000 Hz. Les principes generaux peuvent egalement etre applicables a dautres formes de tension, y compris les tensions de chocs. La terminologie a utiliser dans le cadre de lendurance a la tension est definie et expliquee. Cette premiere edition de lIEC 61251 annule et remplace la deuxieme edition de lIEC TS 61251 parue en 2008. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a la deuxieme edition de lIEC TS 61251: a) transformation dune Specification technique en Norme internationale; b) clarification des questions soulevees depuis la publication de lIEC TS 61251.