IEEE Recommended Practice for
Establishing Liquid Immersed and
Dry-Type Power and Distribution
Transformer Capability when Supplying
Nonsinusoidal Load Currents
IEEE Power and Energy Society
Sponsored by the
Transformers Committee
IEEE IEEE Std C57.110™-2018
3 Park Avenue (Revision of IEEE Std C57.110-2008)
New York, NY 10016-5997
USA
Authorized licensed use limited to: University of Louisiana at Lafayette. Downloaded on November 15,2018 at 05:38:31 UTC from IEEE Xplore. Restrictions apply.
IEEE Std C57.110™-2018
(Revision of IEEE Std C57.110-2008)
IEEE Recommended Practice for
Establishing Liquid Immersed and
Dry-Type Power and Distribution
Transformer Capability when Supplying
Nonsinusoidal Load Currents
Sponsor
Transformers Committee
of the
IEEE Power and Energy Society
Approved 14 June 2018
IEEE-SA Standards Board
Authorized licensed use limited to: University of Louisiana at Lafayette. Downloaded on November 15,2018 at 05:38:31 UTC from IEEE Xplore. Restrictions apply.
Abstract: Provided in this recommended practice are calculation methods for conservatively
evaluating the feasibility for an existing installed dry-type or liquid immersed transformer, to supply
nonsinusoidal load currents as a portion of the total load. Also provided is necessary application
information to assist in properly specifying a new transformer expected to carry a load, a portion
of which is composed of nonsinusoidal load currents. A number of examples illustrating these
methods and calculations are presented. Reference annexes provide a comparison of the
document calculations to calculations found in other industry standards. Suggested temperature
rise calculation methods are detailed for reference purposes.
Keywords: current harmonics, harmonic loss factor, IEEE C57.110™, k-factor, nonsinusoidal load
currents
The Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, New York, NY 10016-5997, USA
Copyright © 2018 by The Institute of Electrical and Electronics Engineers, Inc.
All rights reserved. Published 31 October 2018. Printed in the United States of America.
IEEE is a registered trademark in the U.S. Patent & Trademark Office, owned by The Institute of Electrical and Electronics Engineers,
Incorporated.
PDF: ISBN 978-1-5044-5007-2 STD23180
Print: ISBN 978-1-5044-5008-9 STDPD23180
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Authorized licensed use limited to: University of Louisiana at Lafayette. Downloaded on November 15,2018 at 05:38:31 UTC from IEEE Xplore. Restrictions apply.
