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Grounding

Authored by: Akihiro Ametani , Naoto Nagaoka , Yoshihiro Baba , Teruo Ohno , Koichi Yamabuki

Power System Transients

Print publication date:  November  2016
Online publication date:  November  2016

Print ISBN: 9781498782371
eBook ISBN: 9781315366791
Adobe ISBN:

10.1201/9781315366791-8

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Abstract

The significance of grounding for electric power equipment and systems such as transformers, substations, buildings, home appliances, etc., is well-known, and a number of books and papers have been published on the subject [130]. Grounding is done for the following reasons:

To maintain the ground terminal voltage at zero which is, strictly speaking, soil potential.

It makes an abnormally large current, such as a lightning strike, dissipate into the ground.

To obtain a reference voltage to define (measure) voltage of equipment and systems.

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