Active standard | Published: 25/06/2012

IEC 60034-18-31-ed.2.0

Rotating electrical machines - Part 18-31: Functional evaluation of insulation systems - Test procedures for form-wound windings - Thermal evaluation and classification of insulation systems used in rotating machines
(Machines electriques tournantes - Partie 18-31: Evaluation fonctionnelle des systemes d´isolation - Procedures d´essai pour enroulements preformes - Evaluation thermique et classification des systemes d´isolation utilises dans les machines tournantes)

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Detail information

Designation: IEC 60034-18-31-ed.2.0

Publication date: 25/06/2012

Pages: 54

Country: International technical standard

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Anotation

IEC 60034-18-31:2012 describes thermal endurance test procedures for classification of insulation systems used in a.c. or d.c. rotating electrical machines with indirect cooling and form-wound windings. These test procedures are intended to compare the thermal endurance performance of the mainwall insulation between conductor(s) and ground and, where required by the design of the coil or bar, the insulation between the turns. The main technical changes with regard to the previous edition include: - Definition of the test method and sub-cycles required to establish a consistent standardized platform for thermal ageing of insulation systems for form-wound windings. - Recommendations for establishing a thermal life curve based on confidence intervals. - Comparison of candidate and reference system performance for specific requirements of thermal class, within feasible limits. Keywords: rotating machinery, insulation systems La CEI 60034-18-31:2012 decrit les procedures dessai dendurance thermique pour la classification des systemes disolation utilises dans les machines electriques tournantes a courant alternatif ou continu, a refroidissement indirect et a enroulements preformes. Ces procedures dessai permettent de comparer les performances dendurance thermique de lisolation principale entre le (ou les) conducteur(s) et la terre, et si requis par la conception de la bobine ou de la barre, lisolation entre spires. Les principales modifications techniques par rapport a ledition precedente sont les suivantes: - Definition de la methode dessai et des sous-cycles requis pour etablir une plate-forme normalisee et coherente applicable au vieillissement thermique des systemes disolation des enroulements preformes. - Recommandations pour etablir une courbe de duree de vie thermique fondee sur des intervalles de confiance. - Comparaison des performances des systemes candidats et de reference en fonction dexigences specifiques de classe thermique, dans des limites realisables. Mots clefs: machines tournantes, systemes disolation.

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