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Generator neutral grounding (NGR)

  1. Sep 11, 2014 #1
    Dear All

    here we have two examples of Generator Nuteral Grounding my question about earth switch closing

    Example -1

    if three generators are in operation and one earthing switch is closed, can we close generator-2 or generator-3 earthing switch closed at a time of parallel operation? yes or not ?
    if not please explain in detail

    example 2

    this operation has separate NGR no confusion we can closed individually.
     

    Attached Files:

  2. jcsd
  3. Sep 14, 2014 #2
    I'm sorry you are not finding help at the moment. Is there any additional information you can share with us?
     
  4. Sep 15, 2014 #3

    jim hardy

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    Science Advisor
    Gold Member


    Why would you want to close more than one ? Any one grounds all generators that are connected to the bus.

    On the other hand, it would hurt nothing provided there are not two simultaneous faults on different machines .

    And the resistor should be sized according to distributed capacitance of however many machines you intend it to serve.
     
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