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    • Switchgear And Controlgear
    • High Voltage Switchgear And Controlgear
    • IEC 62271-105:2012

    Codes & Standards - Purchase

    IEC 62271-105:2012

    High-voltage switchgear and controlgear - Part 105: Alternating current switch-fuse combinations for rated voltages above 1 kV up to and including 52 kV
    SKU: iec_006704_046979 Published by IEC Publication Year 2012 2.0 Edition 104 pages

    Product Details

    • Overview
    IEC 62271-105:2012 applies to three-pole units for public and industrial distribution systems which are functional assemblies of switches including switch-disconnectors and current-limiting fuses designed so as to be capable of
    - breaking, at the rated recovery voltage, any current up to and including the rated short-circuit breaking current;
    - making, at the rated voltage, circuits to which the rated short-circuit breaking current applies.
    It does not apply to fuse-circuit-breakers, fuse-contactors, combinations for motor-circuits or to combinations incorporating single capacitor bank switches. This second edition cancels and replaces the first edition of IEC 62271-105, published in 2002, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
    - implementation of figures at the place where they are cited first;
    - renumbering of tables;
    - addition of some of the proposals from IEC paper 17A/852/INF;
    - addition of missing subclauses of IEC 62271-1;
    - implementation of 6.105 Extension of validity of type tests and consequently removing of the relevant parts in the different existing clauses;
    - change of 7th paragraph of 6.101.4 as there is now a definition of NSDD given in 3.7.4 of IEC 62271-1:2007. Harmonization with IEC 62271-107;
    - some referenced clauses in other standards like IEC 60282-1 were changed and therefore changed the editions under 1.2 to the ones referred to;
    - addition of a new Annex C defining tolerances.

    This publication is to be read in conjunction with IEC 62271-1:2007.

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