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IEEE Red Book™: IEEE STD 141-1993
Recommended Practice for Electric Power
Distribution for Industrial Plants

IEEE Std 141-1993
(Revision of IEEE Std 141-1986)

IEEE Recommended Practice for
Electric Power Distribution
for Industrial Plants

Sponsor

Power Systems Engineering Committee
of the
Industrial and Commercial Power Systems Department
of the
IEEE Industry ApplicationsSociety
Approved December 2, 1993

IEEE Standards Board

Abstract: A thorough analysis of basic electrical-systems considerations is presented. Guidance is provided in design, construction, and continuity of an overall system to achieve safety
of life and preservation of property; reliability; simplicity of operation; voltage regulation in the
utilization of equipment within the tolerancelimits under all load conditions; care and maintenance; and flexibility to permit development and expansion. Recommendations are made regarding system planning; voltage considerations; surge voltage protection; system protective
devices; fault calculations; grounding; power switching, transformation, and motor-control apparatus; instruments and meters; cable systems; busways; electrical energyconservation; and
cost estimation.
Keywords: energy management, grounding, industrial power system, industrial power system
economics, industrial power system planning, industrial power system protection, power
cables, power distribution, power transformers, power system measurements, switches/
switchgear, wiring

Grateful acknowledgment is made to the following organizations for having grantedpermission to reprint illustrations in this document as listed below:
Table 3-1 from ANSI C84.1-1989, American National Standard for Electric Power Systems and EquipmentÑVoltage Ratings (60 Hz), copyright 1989 by the American National Standards Institute.
Figure 3-7 from NEMA Standards Publication MG 1-1993, copyright held by the National Electrical
Manufacturers Association.
Figure 5-4 fromBasler Electric, Highland, IL.
Figure 5-5 from General Electric Company, Malvern, PA.
Figure 6-6 from the Industrial Power Systems Data Book, General Electric Company, Schenectady, NY.
Figure 6-11 from D. L. Beeman, Ed., Industrial Power Systems Handbook, McGraw-Hill, New York, NY,
1955.

The Institute of Electrical and Electronics Engineers, Inc.
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Copyright © 1994 by the Institute of Electrical and Electronics Engineers, Inc.
All rights reserved. Published 1994. Printed in the United States of America.
ISBN 1-55937-333-4
No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise,
without the prior written permission of the publisher.

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