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  • BS EN IEC 61472-2:2021 (published 2021-05)

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    Live working. Minimum approach distances Method of determination of the electrical component distance for AC systems from 1,0 kV to 72,5 kV

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  11-05-2021

    Publisher:  British Standards Institution

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    IEC 61472-2:2021 specifies a method for determining the electrical component of the minimum approach distances for live working, for AC systems 1 kV up to and including 72,5 kV. This document addresses system overvoltages and the working air distances between equipment and/or workers at different potentials. The withstand voltage and minimum approach distances determined by the method described in this document can be used only if the following working conditions prevail:

    • workers are trained for, and skilled in, working live lines or close to live conductors or equipment;
    • the operating conditions are adjusted so that the statistical overvoltage does not exceed the value selected for the determination of the required withstand voltage;
    • transient overvoltages are the determining overvoltages;
    • tool insulation has no continuous film of moisture present on the surface;
    • no lightning is observed within 10 km of the work site;
    • allowance is made for the effect of the conducting components of tools.

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    Committee PEL/78
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Superseded By
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