IEEE Std 446-1995, IEEE Recommended Practice for Emergency and Standby Power Systems for Industrial and Commerical Applications (The IEEE Orange Book)

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Название:IEEE Std 446-1995, IEEE Recommended Practice for Emergency and Standby Power Systems for Industrial and Commerical Applications (The IEEE Orange Book)

Автор:

Издательство: Inst of Electrical & Electronics Engineers

ISBN: 1559375981

Дата издания:1996-06

Страниц: 309

Язык:Английский

Формат:PDF

Размер: 3.38 MB

The nature of electric power failures, interruptions, and their duration covers a range in time from microseconds to days. Voltage excursions occur within a range from 20 times normal (or more) to a complete absence of voltage. Frequency excursions can vary as widely in many forms, from harmonics to direct current. These variables occur due to a multitude of conditions both in the power system ahead of the user’s service entrance and following the service entrance within the user’s area of distribution.

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