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sensourabh
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Neutral Inversion

06/20/2015 10:44 AM

What is neutral inversion in ungrounded system?
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7anoter4
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#1

Re: neutral inversion

06/20/2015 12:35 PM

See [for instance]:

http://www.electrotechnik.net/2010/01/neutral-inversion-in-ungrounded-three.html

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SolarEagle
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#2

Re: Neutral Inversion

06/20/2015 7:36 PM

"A condition in which the phase to neutral voltages of a three-phase, star connected system are unbalanced. "

http://forums.mikeholt.com/showthread.php?t=153584

http://thesciencedictionary.org/neutral-inversion/

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PWSlack
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#3

Re: Neutral Inversion

06/22/2015 1:24 PM

It is a good phrase to enter into an internet search engine prior to performing a search on the topic. Good luck.

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msajaa
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#4

Re: Neutral Inversion

07/10/2015 6:38 AM

Neutral Inversion is a phenomenon in which the neutral of an ungrounded three phase system falls out of the voltage triangle. This usually occurs in a three phase system which is not earthed and where a single transformer is used in a voltage-based earth-fault sensing system. The transformer may be connected to one of the phases and the ground. This transformer needs to be provided without sufficient resistance loading. The no-load or exciting impedance of the transformer is in parallel with the line capacitance of the phase to which the transformer is connected.
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