[Milsurplus] Aircraft Electrical Question

[Peter Gottlieb]

Do you know for sure or are you theorizing?



On 1/12/2011 1:20 PM, Mike Morrow wrote:
>> I'm no expert but I thought it all comes from 3 phase Wye grounded neutral.
> A grounded neutral would be one way of assuring that AC power will *fail* upon
> the occurance of a single phase-to-ground fault anywhere.  Neutral-grounded wye
> would be a very poor indicator for AC reliability in a critical application.
>
> Even large electric utility generating stations do not use a grounded-neutral
> on the wye-connected main generator, which feeds a delta-connected primary on
> the transformer bank that connects to the switchyard.  Generator neutral-to-
> ground overvoltage is used to indicate a ground fault in such systems, which
> trips the generator electrically before any real adverse fault current can
> develope.
>
> Mike / KK5F
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