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Big motors

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  • 04-05-2016 8:39pm
    #1
    grousedogtom
    Registered Users Posts: 463 ✭✭


    Hi
    I'm looking at a job where we need to run 3 phase cable from new vsds to submersible motors, the run is 23 meters and the motors are 132 kw each, I'm looking for advice on recommended cable size to use,
    Thanks in advance


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    #2
    maxamillius
    Registered Users Posts: 1,136 ✭✭✭maxamillius


    grousedogtom wrote: »
    Hi
    I'm looking at a job where we need to run 3 phase cable from new vsds to submersible motors, the run is 23 meters and the motors are 132 kw each, I'm looking for advice on recommended cable size to use,
    Thanks in advance

    Do you have the power factor? Can then work out design current and apply other factors to determine exact cable size and make sure volt drop is ok.


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    #3
    grousedogtom
    Registered Users Posts: 463 ✭✭grousedogtom


    Pf 100%of load. 86
    50% of load. 74


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    #4
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,595 Mod ✭✭✭✭2011


    grousedogtom wrote: »
    Pf 100%of load. 86
    50% of load. 74

    The cable will have to be sized based on a design current = 132000 / (1.732 x 400 x 0.86)

    Select a fuse to provide short circuit protection (as the VSD will provide overload protection).


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