Active standard | Published: 22/12/2022

IEC 60034-18-1-ed.3.0

Rotating electrical machines - Part 18-1: Functional evaluation of insulation systems - General guidelines
(Machines electriques tournantes - Partie 18-1: Evaluation fonctionnelle des systemes d´isolation - Lignes directrices generales)

Available languages: English and French

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Detail information

Designation: IEC 60034-18-1-ed.3.0

Publication date: 22/12/2022

Pages: 37

Country: International technical standard

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Anotation

IEC 60034-18-1:2022 deals with the general guidelines for functional evaluation of electrical insulation systems, used or proposed to be used in rotating electrical machines within the scope of IEC 60034-1, in order to qualify them. IEC 60034-18-1 defines general requirements on the qualification of insulation systems, where – for thermal ageing – the Arrhenius equations do not necessarily fit, according to many experiences. This third edition cancels and replaces the second edition published in 2010. This edition includes the following significant technical changes with respect to the previous edition: a. provides general guidelines for functional evaluation of different types of windings as before but incorporates those changes, which have been introduced for the electrical qualification and evaluation of windings which are electrically stressed by converter-supply;

b. is now focused on general guidelines with all technical details of procedures and qualification principles moved to the subsequent parts;

c. details additional general aspects of functional evaluation and qualification, particularly the procedure for comparison between reference and candidate insulation systems, the introduction of the concept of qualification for different expected life-times in service and the evaluation of minor component or manufacturing changes.

L’IEC 60034-18-1:2022 traite des lignes directrices generales pour levaluation fonctionnelle des systemes disolation electrique, utilises ou dont lutilisation est proposee dans les machines electriques tournantes relevant du domaine dapplication de lIEC 60034-1, en vue de leur qualification. L’IEC 60034-18-1 definit les exigences generales pour la qualification des systemes d’isolation, dans lesquels, pour le vieillissement thermique, les equations d’Arrhenius ne sont pas necessairement adaptees, comme cela ressort de nombreux retours d’experience. Cette troisieme edition annule et remplace la deuxieme edition parue en 2010. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: a. comme auparavant, fournit des lignes directrices generales pour levaluation fonctionnelle de differents types denroulements, mais inclut les modifications qui ont ete introduites pour la qualification et levaluation electriques des enroulements qui subissent une contrainte electrique du fait dune alimentation par convertisseur;

b. met desormais laccent sur les lignes directrices generales, tous les details techniques des procedures et des principes de qualification etant deplaces vers les parties subsequentes;

c. decrit des aspects generaux supplementaires de levaluation et de la qualification fonctionnelles, en particulier la procedure de comparaison entre les systemes disolation candidat et de reference, lintroduction du concept de qualification pour differentes durees de vie en service prevues, ainsi que levaluation des changements mineurs de composants ou de processus de fabrication.

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