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NF EN 60034-18-31

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

Edition date: 2012-12-01
In Force
Available languages: English, French
Summary: La présente partie de l'IEC 60034 décrit les procédures d'essai d'endurance thermique pour la classification des systèmes d'isolation utilisés dans les machines électriques tournantes à courant alternatif ou continu, à refroidissement indirect et à enroulements préformés. La performance d'essai d'un système d'isolation candidat est comparée à celle d'un système d'isolation de référence dont l'expérience en service a été démontrée. Les procédures d'essai décrites dans l'IEC 60034-18-31 permettent de comparer les performances d'endurance thermique de l'isolation principale entre le (ou les) conducteur (s) et la terre, et si requis par la conception de la bobine ou de la barre, l'isolation entre spires. L'essai n'a pas pour objet de simuler les contraintes mécaniques exercées en service sur le renforcement de l'extrémité des enroulements ou les matériaux de support. Il ne comprend pas l'évaluation de la détérioration thermomécanique provoquée par la dilatation et la contraction de l'isolation pendant le cycle de température. L'IEC 60034-18-1 décrit des principes généraux d'essais applicables aux essais d'endurance thermique des systèmes d'isolation des machines électriques tournantes. Sauf indication contraire dans l'IEC 60034-18-31, les principes de l'IEC 60034-18-1 sont suivis. La classe thermique applicable au système d'isolation correspond à sa température maximale admissible ("point chaud"). Il convient que la température moyenne mesurée en service ne dépasse pas l'échauffement admis conformément à l'IEC 60034-1. NOTE 1 Les grosses machines, en particulier celles qui sont fabriquées à partir de barres, peuvent nécessiter des procédures spéciales d'essai pour l'évaluation thermique, qui ne sont pas incluses dans la présente partie. NOTE 2 Les paramètres recommandés pour l'essai de diagnostic peuvent être appliqués conformément à l'IEC 60034-18-42 aux bobines préformées conçues avec des systèmes d'isolation de Type II pour utilisation avec des convertisseurs.
Keywords: ROTATING ELECTRIC MACHINES|ELECTRICAL INSULATION|WINDINGS|TESTS|THERMAL ENDURANCE TESTS|AGEING TESTS : MATERIALS|MECHANICAL TESTS|ELECTRICAL TESTS|PERFORMANCE EVALUATION|CLASSIFICATIONS
ICS: 29.160.01-Rotating machinery in general, 29.080.30-Insulation systems
CTN:

International Equivalence

Identic EN 60034-18-31:2012

Identic IEC 60034-18-31:2012

Reemplazo Normas

Reemplaza a NF EN 60034-18-31:199504 (C51-318-31)

Reemplaza a NF EN 60034-18-31/A1:200011 (C51-318-31/A1)

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