Parallel Generators Grounding

mohammadfawaz

mohammadfawaz

@mohammadfawaz-NPvfDD • Oct 25, 2024
Hello all,

I have a small question concerning grounding parallel generators. I found three ways to do it: either connect each one of them to ground, or connect all of them to one neutral bus and connect that bus to ground, or simply ground one of them to avoid any ground loops. Each method has its own advantages and disadvantages. Can someone provide an explanation of when do we use each method? What are the conditions needed to deploy any method of these? Which method is generally better? Can someone please provide some good references?

Thank you

Mohammad
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  • manoj_2all

    manoj_2all

    @manoj-2all-YWk0FH • Nov 3, 2010

    I have connected all of them to one neutral bus and connected that bus to ground via NGR (Neutral Grounding Resistor) it has no problem till date
    0
  • d_vipul

    d_vipul

    @d-vipul-wP6Syg • Nov 4, 2010

    Hey mohammadfawaz,

    I will suggest you to earth both the generators seperataly otherwise for earth fault of one generators both the generators will trip...

    Due to loop formation....

    Regards,
    VIPUL
    0