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Principles blank

lyledunn

I am afraid my electrical engineering princIples are letting me down.

So if I have a standard 400/230v star connected secondary feeding an installation that comprises 3 single phase loads of 10A, 12A and 20A for L1, L2 and L3 respectively,    all in phase, no harmonics. I estimate the neutral current to be 9.16A. If I lose the neutral upstream of the loads what is the voltage to earth? Is it less than 55v? 

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    9.16x230x1.1. Divided by 10x12x20 = 0.96v  thus less then 70v so complies .

    2317               2400 

    ——

    think that’s how you do it of the top of my head , but I’m not in front of any books it’s a Sunday ! 

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  • 0

    9.16x230x1.1. Divided by 10x12x20 = 0.96v  thus less then 70v so complies .

    2317               2400 

    ——

    think that’s how you do it of the top of my head , but I’m not in front of any books it’s a Sunday ! 

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