IEC 60229-ed.3.0

Detail information

Designation: IEC 60229-ed.3.0

Publication date: 10/10/2007

Pages: 22

Country: International technical standard

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Anotation

Provides a range of tests which may be required for electric cables which have an extruded oversheath and where that oversheath performs a special protective function. The standard covers cables for use in insulated systems and in uninsulated systems. The tests are categorized for use as routine tests, type tests and tests after installation. These tests comprise of electrical routine tests on cable oversheath used in insulated or uninsulated systems, abrasion and corrosion spread type tests, electrical test on cable oversheath after installation. Routine tests and tests after installation, as specified in the relevant cable standards, are applicable for all situations. Type tests depend upon the nature of the system and the construction of the cable and do not have to be carried out for normal conditions of use. The significant technical changes with respect to the previous edition are as follows: - The text has been modified in order to consider the function of the oversheath, irrespective of the way the metallic sheath or screen of the cable is earthed because, in some cases, the oversheath is designed to act not only as a protection against corrosion, but also to reduce the risk of degradation of the cable insulation system. This requirement may be independent of the nature of the insulation and independent of the rated voltage of the cable. - More precise wording has been introduced regarding the application of some tests (if the sheaths or foils are bonded to the oversheath or not). - The test requirements have been revised in order to be in line with the standards published after the second edition. - The pressure test at high temperature has been deleted as the requirement is specified in the relevant cable standards. - A "Guidance on tests after installation" (Annex B) has been included. Fournit une gamme dessais que lon peut demander pour les cables electriques qui comportent une gaine extrudee, quand cette gaine remplit une fonction speciale de protection. Cette norme sapplique aux cables destines aux reseaux a ecran isole et aux reseaux a ecran non isole. Les essais sont classes en tant quessais individuels, essais de type et essais apres pose. Ces essais comprennent: - des essais dielectriques individuels pour les gaines des cables utilises dans les reseaux a ecran isole ou non isole, - des essais de type dabrasion, et de diffusion de la corrosion, - un essai dielectrique de gaine apres pose. Les essais individuels et les essais apres pose, tels que specifies dans les normes particulieres de cables, sont applicables en toute circonstance. Les essais de type dependent de la nature du reseau et de la structure du cable et nont pas a etre effectues pour des conditions normales dutilisation. Les modifications techniques majeures, par rapport a la precedente edition, sont les suivantes: - Le texte a ete modifie pour prendre en compte la fonction de la gaine exterieure, independamment du type de mise a la terre de la gaine ou lecran metallique du cable, parce que, dans certains cas, la gaine exterieure est concue non seulement pour assurer une protection contre la corrosion, mais aussi pour reduire le risque de degradation de lisolation du cable. Cette exigence peut etre independante de la nature de lenveloppe isolante et independante de la tension assignee du cable. - La redaction concernant la pertinence de certains essais a ete precisee (selon que les gaines ou feuilles sont contrecollees ou non a la gaine exterieure). - Les exigences dessai ont ete revues pour etre en accord avec les specifications publiees posterieurement a la deuxieme edition. - Lessai de pression a temperature elevee a ete supprime, car cette exigence est specifiee dans les specifications particulieres des cables. - Des " Recommandations pour les essais apres pose " (Annexe B) ont ete introduites.