ANSI IEEE 422-2012 Guide for the Design of Cable Raceway Systems for Electric Generating Facilities.pdf

1、IEEE Guide for the Design of Cable Raceway Systems for Electric Generating Facilities Sponsored by the Energy Development and Power Generation Committee and Insulated Conductors Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA 11 January 2013 IEEE Power and Energy Society IEEE Std 422-2012IE

2、EE Std 422-2012 IEEE Guide for the Design of Cable Raceway Systems for Electric Generating Facilities Sponsors Energy Development and Power Generation Committee and Insulated Conductors Committee of the IEEE Power and Energy Society Approved 5 December 2012 IEEE-SA Standards BoardApproved 27 October

3、 2014American National Standards InstituteAbstract: Guidance for the design and installation of cable raceway systems for all types of electric generating facilities is provided. Recommendations, methods, and best engineering practices for the design of cable raceway systems including selection of e

4、quipment, materials, and the configuration of raceway are described. Keywords: cable, conduit, electrical design, generating facility, IEEE 422, raceway configurations, raceway design, raceway installation, tray The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY

5、10016-5997, USA Copyright 2013 by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 11 January 2013. Printed in the United States of America. National Electrical Code, NEC, NFPA 70 are registered trademarks of the National Fire Protection Association, Inc. Na

6、tional Electrical Safety Code and NESC are both registered trademarks and service marks of The Institute of Electrical and Electronics Engineers, Inc. IEEE is a registered trademark in the U.S. Patent +1 978 750 8400. Permission to photocopy portions of any individual standard for educational classr

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19、e validity of any patent rights, and the risk of infringement of such rights, is entirely their own responsibility. Further information may be obtained from the IEEE Standards Association. Copyright 2013 IEEE. All rights reserved. viParticipants At the time this IEEE guide was completed, the Station

20、 Design, Operations, and Control Subcommittee of Energy Development and Power Generation Committee and Generation Station and Industrial Cables Subcommittee of Insulated Conductors Committee Working Groups had the following membership: John E. Merando, Jr., Chair William G. Bloethe, Vice Chair Micha

21、el G. Bayer Kenneth E. Bow Eric J. Bulington William A. Byrd John R. Cancelosi Preston Cooper Douglas S. DePriest Frank DiGuglielmo Gary R. Engmann* Robert E. Fleming Robert A. Gehm Ajit K. Gwal Thomas R. Jurczak Richard J. Kolich Robert L. Konnik David R. Kummer Michael K. Lauxman Gerald R. Liskom

22、Russell Lowe Daniel G. Mainstruck Arturo J. Maldonado Nader Moubed Donald Smith Albert H. Spear III Philip A. Spotts Gabriel J. Taylor Robert F. Wobick Dawn F. Zhao *Deceased The following members of the individual balloting committee voted on this guide. Balloters may have voted for approval, disap

23、proval, or abstention. William Ackerman Stan Arnot John Barker Farouk Baxter Michael G. Bayer Robert Beavers William G. Bloethe Kenneth E. Bow Daniel Brosnan Gustavo Brunello William A. Byrd Thomas Campbell Robert Carruth Suresh Channarasappa Randy Clelland Matthew Davis Frank DiGuglielmo John Disos

24、way Gary Donner Michael Dood Gary R. Engmann Rostyslaw Fostiak David Giegel James Gleason Jalal Gohari Randall Groves Ajit K. Gwal Hamidreza Heidarisafa Lee Herron Gary Heuston Lauri Hiivala David Horvath R. Jackson Clark Jacobson Paul Johnson James Jones Chad Kiger Joseph L. Koepfinger Richard J. K

25、olich Robert L. Konnik Jim Kulchisky Saumen Kundu Chung-Yiu Lam Gerald R. Liskom Debra Longtin Russell Lowe Greg Luri Arturo J. Maldonado William McBride John E. Merando, Jr. Georges Montillet Kimberly Mosley Jerry Murphy Rhonda Netzel Michael S. Newman Joe Nims Lorraine Padden Percy Pool John Rando

26、lph Michael Roberts M. Sachdev Bartien Sayogo Douglas Seely Devki Sharma Gil Shultz Michael Smalley James Smith Nagu Srinivas Gary Stoedter S. Thamilarasan James Thompson Michael Tucker Joe Uchiyama Gerald Vaughn John Vergis Kenneth White David Zaprazny Dawn F. Zhao Copyright 2013 IEEE. All rights r

27、eserved. viiWhen the IEEE-SA Standards Board approved this guide on 5 December 2012, it had the following membership: Richard H. Hulett, Chair John Kulick, Vice Chair Robert M. Grow, Past Chair Konstantinos Karachalios, Secretary Satish Aggarwal Masayuki Ariyoshi Peter Balma William Bartley Ted Burs

28、e Clint Chaplin Wael Diab Jean-Philippe Faure Alexander Gelman Paul Houz Jim Hughes Young Kyun Kim Joseph L. Koepfinger* John Kulick David J. Law Thomas Lee Hung Ling Oleg Logvinov Ted Olsen Gary Robinson Jon Walter Rosdahl Mike Seavey Yatin Trivedi Phil Winston Yu Yuan *Member Emeritus Also include

29、d are the following nonvoting IEEE-SA Standards Board liaisons: Richard DeBlasio, DOE Representative Michael Janezic, NIST Representative Julie Alessi IEEE Standards Program Manager, Document Development Malia Zaman IEEE Standards Program Manager, Technical Program Development Copyright 2013 IEEE. A

30、ll rights reserved. viiiIntroduction This introduction is not part of IEEE Std 422-2012, IEEE Guide for the Design of Cable Raceway Systems for Electric Generating Facilities. IEEE Std 422TMwas originally issued in 1977 and revised in 1986, but was administratively withdrawn by IEEE in the mid 1990s

31、 as a result of not being re-affirmed or revised in the interim. This document was originally developed as a guide for the design and installation of wire and cable systems in generating stations with the objective of minimizing failures and their consequences. It was not intended for use in the des

32、ign of wire and cable systems in switchyards or substations, which is covered in IEEE Std 525TM. The guide was originally written to apply to both nuclear and non-nuclear electric power generating stations except for the special requirements of wire and cable installations in Class 1E systems of nuc

33、lear stations for which the user was referred to IEEE Std 690TM. Most of the existing nuclear plants make reference to IEEE Std 422-1986 in their governing documents and use the guidance of IEEE Std 422-1986 in their designs, especially for non-nuclear applications, such as water treatment, cooling

34、towers, administrative, and warehouse structures, etc. It is not the intent of this revision to change what was done in the past, or require any new design changes to existing operating nuclear plants, or to prohibit the use of the guidance in this document when it is referenced in nuclear plant gov

35、erning documents. The intent of this revision is to clarify the applicability of this document to future nuclear plant designs. The general practice at many existing nuclear facilities was to use one cable raceway design criteria within the vital areas rather than having one criterion apply to the n

36、on-safety systems, and another criterion apply to the structures and components of the safety related systems. Thus having two documents, IEEE Std 422 and IEEE Std 690, apply to the vital areas within nuclear plants allows for the possibility of two sets of overlapping or conflicting requirements to

37、 govern the design of cable raceway systems, especially considering that safety related and non-safety related cables are often routed in same room and may even go to the same end device. Therefore, the user is advised to verify the applicability of this document when doing nuclear plant cable racew

38、ay design work to prevent using it in situations where IEEE Std 690 applies. Therefore, a revision to IEEE Std 422 has been undertaken to remove those design requirements (such as associated circuits) that are specific to only nuclear power generating stations with the understanding that a similar r

39、evision to IEEE Std 690 is in progress to capture any nuclear design requirements (such as associated circuits) which apply to nuclear plants but do not apply to non-nuclear generating stations. In addition, it should be noted that the 1986 version of IEEE Std 422 contained some information regardin

40、g cable installation practices which has now been incorporated into IEEE Std 1185TM-2010, and therefore has been removed from this revision of IEEE Std 422. For additional guidance on raceway design and installation requirements for nuclear facilities, also see IEEE Std 628TM. In addition to fossil

41、fueled generating stations, this document applies to hydroelectric, solar, photovoltaic, wind, ocean, geothermal, and other renewable power generating stations but not to residential, commercial facilities, or emergency standby generators that serve their own facilities. This document may be of bene

42、fit for the proper design of cable raceway systems in industrial, commercial, governmental, and public facilities when similar cable raceway systems are used. Copyright 2013 IEEE. All rights reserved. ixContents 1. Overview 1 1.1 Scope . 1 1.2 Purpose 1 2. Normative references 1 3. Definitions and a

43、cronyms. 2 3.1 Definitions . 2 3.2 Acronyms 3 4. Cable selection . 4 4.1 General 4 4.2 Cable circuit classifications . 4 4.3 Service conditions 4 4.4 Cable performance. 5 4.5 Cable thermal limits. 5 5. Cable conductor sizing and voltage levels 6 6. Electrical segregation of cable systems 8 6.1 Gener

44、al 8 6.2 Segregation 8 7. Separation of redundant cable systems. 10 7.1 General 10 7.2 Design considerations 10 8. Shielding and shield grounding 12 8.1 General 12 8.2 Medium voltage power cable. 12 8.3 Instrumentation cable shielding. 14 9. Raceway . 15 9.1 General 15 9.2 Conduit 15 9.3 Cable tray.

45、 17 9.4 Wireways. 20 9.5 Direct burial, tunnels, and trenches . 20 9.6 Floor trenches 21 9.7 Raised floors 21 Annex A (informative) Bibliography 22 Copyright 2013 IEEE. All rights reserved. 1IEEE Guide for the Design of Cable Raceway Systems for Electric Generating Facilities IMPORTANT NOTICE: IEEE

46、Standards documents are not intended to ensure safety, health, or environmental protection, or ensure against interference with or from other devices or networks. Implementers of IEEE Standards documents are responsible for determining and complying with all appropriate safety, security, environment

47、al, health, and interference protection practices and all applicable laws and regulations. This IEEE document is made available for use subject to important notices and legal disclaimers. These notices and disclaimers appear in all publications containing this document and may be found under the hea

48、ding “Important Notice” or “Important Notices and Disclaimers Concerning IEEE Documents.” They can also be obtained on request from IEEE or viewed at http:/standards.ieee.org/IPR/disclaimers.html. 1. Overview 1.1 Scope This document provides guidance for the design and installation of cable raceway

49、systems for all types of electric generating facilities. 1.2 Purpose The guide provides recommendations, methods, and best engineering practices for the design of cable raceway systems including selection of equipment, materials, and the configuration of raceway. 2. Normative references The following referenced documents are indispensable for the application of this document (i.e., they must be understood and used, so each referenced document is cited in text and its relationship to this document is explained). For dated references, only the edition cited a