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Constant-Voltage Transformers

Authored by: Arindam Maitra , Anish Gaikwad , Arshad Mansoor , Douglas Dorr , Ralph Ferraro

Electric Power Transformer Engineering

Print publication date:  May  2012
Online publication date:  May  2012

Print ISBN: 9781439856291
eBook ISBN: 9781439856369
Adobe ISBN:


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Constant-voltage transformers (CVT) have been used for many years, primarily as a noise-isolation device. Recently, they have found value when applied as a voltage-sag protection device for industrial and commercial facilities. The purpose of this section in the handbook is to give power-system engineers and facility engineers who are unfamiliar with the CVT technology (also known as ferroresonant transformers) the insights and information necessary to determine the types of electric-service-supply events that CVTs can mitigate. Items covered in this chapter include operation, characteristics, applications, specifications, and sizing guidelines of CVTs. The goal here is not to duplicate information currently available but, rather, to collect information into a single location and then supplement it to provide:

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