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Determining Max Zs For Time Current Curve

Former Community Member
Former Community Member
How do you determine the max Zs when the manufacturer does not list or specify the maximum permitted earth fault loop impedance? TN system.


https://library.industrialsolutions.abb.com/publibrary/checkout/GES-6119D?TNR=Time%20Current%20Curves%7CGES-6119D%7CPDF&filename=GES6119.pdf
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  • Former Community Member
    0 Former Community Member
    Chris Pearson:

    Consult BS 7671? ?

     




    Does BS7671 take these curves into account?


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  • Former Community Member
    0 Former Community Member
    Chris Pearson:

    Consult BS 7671? ?

     




    Does BS7671 take these curves into account?


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