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IEC 61109-ed.3.0-CMV
Insulators for overhead lines - Composite suspension and tension insulators for a.c. systems with a nominal voltage greater than 1 000 V - Definitions, test methods and acceptance criteria
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NORM herausgegeben am 26.2.2025
Informationen über die Norm:
Bezeichnung normen: IEC 61109-ed.3.0-CMV
Ausgabedatum normen: 26.2.2025
SKU: NS-1214910
Zahl der Seiten: 165
Gewicht ca.: 526 g (1.16 Pfund)
Land: Internationale technische Norm
Kategorie: Technische Normen IEC
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Die Annotation des Normtextes IEC 61109-ed.3.0-CMV :
IEC61109:2025 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC 61109:2025 edition 3.0 and the previous IEC 61109:2008 edition 2.0. Furthermore, comments from IEC TC 36 experts are provided to explain the reasons of the most relevant changes, or to clarify any part of the content. IEC 61109:2025 applies to composite insulators for overhead lines consisting of a load-bearing cylindrical insulating solid core consisting of fibres - usually glass - in a resin-based matrix, a housing (surrounding the insulating core) made of polymeric material and metal end fittings permanently attached to the insulating core. Composite insulators covered by this document are intended for use as suspension/tension line insulators, but these insulators could occasionally be subjected to compression or bending, for example when used as interphase-spacers. Guidance on such loads is outlined in Annex C. The object of this document is to: - define the terms used, - specify test methods, - specify acceptance criteria. This third edition cancels and replaces the second edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - extension of this document to apply both to AC and DC systems; - modifications of Clause 3, Terms, definitions and abbreviations; - removal of Clause 7, Hybrid insulators, from this document; - modifications of tests procedures recently included in IEC 62217 (hydrophobicity transfer test, stress corrosion, water diffusion test on the core with housing); - modifications on environmental conditions; - modifications on classification of tests and include the relevance of the interfaces; - clarification and modification of the parameters determining the need to repeat design and type tests; - revision of Table 1; - revision of electrical type tests; - revision of re-testing procedure of sample test; - addition of a new Annex D on electric field control for AC; - addition of a new Annex E on typical sketch for composite insulators assembly; - addition of a new Annex F on mechanical evaluation of the adhesion between core and housing; - addition of a new Annex G on applicability of design- and type tests for DC applications.
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