1、IEEE Std 741-2007(Revision of IEEE Std 741-1997)IEEE Standard Criteria for theProtection of Class 1E Power Systemsand Equipment in Nuclear PowerGenerating StationsIEEE3 Park Avenue New York, NY 10016-5997, USA1 February 2008IEEE Power Engineering SocietySponsored by theNuclear Power Engineering Comm
2、ittee741TMIEEE Std 741-2007 (Revision of IEEE Std 741-1997) IEEE Standard Criteria for the Protection of Class 1E Power Systems and Equipment in Nuclear Power Generating Stations Sponsor Nuclear Power Engineering Committee of the IEEE Power Engineering Society Approved 27 September 2007 IEEE-SA Stan
3、dards Board Abstract: Criteria that establish protection requirements for Class 1E power systems and equipment are prescribed in this standard. The purpose of and the means for obtaining protection from electrical and mechanical damage, or failures that can occur within a time period that is shorter
4、 than that required for operator action, are described. Testing and surveillance requirements are included. Plant physical design requirements to protect against events such as pipe whip, fire, dropped load, etc., are not included. Keywords: Class 1E, electrical equipment, nuclear power generating s
5、tations, power systems, protection The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2008 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 1 February 2008. Printed in the United States of Ame
6、rica. IEEE is a registered trademark in the U.S. Patent +1 978 750 8400. Permission to photocopy portions ofany individual standard for educational classroom use can also be obtained through the Copyright ClearanceCenter.iv Copyright 2008 IEEE. All rights reserved. Introduction This introduction is
7、not part of IEEE Std 741-2007, IEEE Standard Criteria for the Protection of Class 1E Power Systems and Equipment in Nuclear Power Generating Stations. The IEEE Power Engineering Society has developed this standard to provide the principal design criteria, design features, and testing requirements fo
8、r the protection of Class 1E power systems and equipment supplied from those systems. It is of particular use in identifying the need for special protection features where the requirements of nuclear power generating stations necessitate supplementing accepted industry practices. Wherever possible,
9、this standard identifies other standards or documents that provide more explicit guidance for specific protection requirements. By definition, the protection shall be adequate to sense and to determine the presence of an unacceptable condition and to execute the operations required in order to limit
10、 degradation effects. In this role, this standard pays special attention to the requirements for design verification documentation to support the protection performance. This standard also addresses the electrical penetration assemblies installed as part of the containment structure that may require
11、 special considerations for protection. Also included are the criteria used to establish the necessity for special considerations and the resulting protection requirements. The revision of this standard included the following principal changes: Updating the standard in terms of additional protection
12、 considerations regarding motor service factor Updating the standard in regard to additional considerations when selecting digital protective devices (e.g., EMI/RFI) Updating normative references, including the addition of several new standards Deleting definitions from Clause 3 that are given in Th
13、e Authoriative Dictionary of IEEE Standards Terms B6.a Updating Annex D in regard to short circuit considerations when setting breaker instantaneous trip settings used in combination with contactors/starters to preclude contactor/starter damage Adding a bibliography (see Annex E) Notice to users Err
14、ata Errata, if any, for this and all other standards can be accessed at the following URL: http:/ standards.ieee.org/reading/ieee/updates/errata/index.html. Users are encouraged to check this URL for errata periodically. _ aThe numbers in brackets correspond to those of the bibliography in Annex E.
15、v Copyright 2008 IEEE. All rights reserved. Interpretations Current interpretations can be accessed at the following URL: http:/standards.ieee.org/reading/ieee/interp/ index.html. Patents Attention is called to the possibility that implementation of this standard may require use of subject matter co
16、vered by patent rights. By publication of this standard, no position is taken with respect to the existence or validity of any patent rights in connection therewith. The IEEE is not responsible for identifying Essential Patent Claims for which a license may be required, for conducting inquiries into
17、 the legal validity or scope of Patents Claims, or determining whether any licensing terms or conditions are reasonable or non-discriminatory. Further information may be obtained from the IEEE Standards Association. Participants At the time this standard was submitted to the IEEE-SA Standards Board
18、for approval, the SC4.7 Working Group had the following membership: Harvey C. Leake, Chair Kenneth R. Fleischer, Technical Editor George E. Attarian G. Alan Bysfield Robert Fletcher David Gladey Kali Hara Thomas McCaffrey William J. Mindick Gerald L. Nicely Thomas R. Sims Robert M. Stark James Stone
19、r Michael S. Tucker The following members of the individual balloting committee voted on this standard. Balloters may have voted for approval, disapproval, or abstention. William J. Ackerman S. K. Aggarwal Stan Arnot Gary E. Arntson George E. Attarian Ali Al Awazi William G. Bloethe Richard T. Bolge
20、o John P. Bonner Wesley W. Bowers Mark D. Bowman Robert C. Carruth Suresh Channarasappa Weijen Chen Mark S. Clark Tommy P. Cooper John K. Coyle John Disosway Gary Engmann Stephen A. Fleger Kenneth R. Fleischer Ron K. Greenthaler Randall C. Groves Ajit K. Gwal Wolfgang B. Haverkamp Hamidreza Heidaris
21、afa David A. Horvath Peter L. Hung Wayne E. Johnson James H. Jones Joseph L. Koepfinger Robert L. Konnik John D. Kueck Chung-Yiu Lam Harvey C. Leake Shawn M. Leard Charles A. Lennon Bruce A. Lord John D. MacDonald Keith N. Malmedal John E. Merando Gary L. Michel William J. Mindick Michael S. Newman
22、Gerald L. Nicely James Parello Michael A. Roberts Charles W. Rogers Fredrick L. Roy Bartien Sayogo Glen E. Schinzel Thomas R. Sims David R. Smith Robert M. Stark S. Thamilarasan James B. Thompson Michael S. Tucker S. Tulasidas Joe D. Watson James W. Wilson David J. Zaprazny vi Copyright 2008 IEEE. A
23、ll rights reserved. When the IEEE-SA Standards Board approved this standard on 27 September 2007, it had the following membership: Steve M. Mills, Chair Robert M. Grow, Vice Chair Don Wright, Past Chair Judith Gorman, Secretary Richard DeBlasio Alex Gelman William R. Goldbach Arnold M. Greenspan Joa
24、nna N. Guenin Kenneth S. Hanus William B. Hopf Richard H. Hulett Hermann Koch Joseph L. Koepfinger* John Kulick David J. Law Glenn Parsons Ronald C. Petersen Tom A. Prevost Narayanan Ramachandran Greg Ratta Robby Robson Anne-Marie Sahazizian Virginia C. Sulzberger Malcolm V. Thaden Richard L. Townse
25、nd Howard L. Wolfman *Member Emeritus Also included are the following nonvoting IEEE-SA Standards Board liaisons: Satish K. Aggarwal, NRC Representative Michael H. Kelley, NIST Representative Don Messina IEEE Standards Program Manager, Document Development Matthew J. Ceglia IEEE Standards Program Ma
26、nager, Technical Program Development vii Copyright 2008 IEEE. All rights reserved. Contents 1. Scope 1 2. Normative references 1 3. Definitions 3 4. General design criteria 3 5. Principal design criteria and requirements 4 5.1 AC power distribution systems 4 5.2 DC power system. 6 5.3 Instrumentatio
27、n and control power system 6 5.4 Primary containment electrical penetration assemblies .7 5.5 Valve actuator motors (direct gear driven) 7 6. Testing and surveillance. 8 6.1 Device testing 8 6.2 Preoperational tests 8 6.3 Surveillance . 9 Annex A (informative) Illustration of concepts associated wit
28、h degraded voltage protection. 10 Annex B (informative) Guidelines for selection of overload protection for VAM circuits. 14 Annex C (informative) Auxiliary system automatic bus transferProtection concerns 35 Annex D (informative) Use of high-speed magnetic circuit breakers for special applications
29、42 Annex E (informative) Bibliography 45 1 Copyright 2008 IEEE. All rights reserved. IEEE Standard Criteria for the Protection of Class 1E Power Systems and Equipment in Nuclear Power Generating Stations 1. Scope This standard provides the principal design criteria, design features, and testing requ
30、irements for the protection of Class 1E power systems and equipment supplied from those systems. It identifies special protection features that are needed where the requirements of nuclear power generating stations necessitate supplementing accepted industry practices. 2. Normative references The fo
31、llowing 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 applies. For undated references,
32、 the latest edition of the referenced document (including any amendments or corrigenda) applies. IEEE Std 141-1993, IEEE Recommended Practice for Electric Power Distribution for Industrial Plants (IEEE Red Book).1,2IEEE Std 142-1991, IEEE Recommended Practice for Grounding of Industrial and Commerci
33、al Power Systems (IEEE Green Book). IEEE Std 242-2001, IEEE Recommended Practice for Protection and Coordination of Industrial and Commercial Power Systems (IEEE Buff Book). IEEE Std 308-2001, IEEE Standard Criteria for Class 1E Power Systems for Nuclear Power Generating Stations. 1IEEE publications
34、 are available from the Institute of Electrical and Electronics Engineers, 445 Hoes Lane, Piscataway, NJ 08854, USA (http:/standards.ieee.org/). 2The IEEE standards or products referred to in this clause are trademarks of the Institute of Electrical and Electronics Engineers, Inc. IEEE Std 741-2007
35、IEEE Standard Criteria for the Protection of Class 1E Power Systems and Equipment in Nuclear Power Generating Stations 2 Copyright 2008 IEEE. All rights reserved. IEEE Std 317-1983 (Reaff 2003), IEEE Standard for Electric Penetration Assemblies in Containment Structures for Nuclear Power Generating
36、Stations. IEEE Std 336-2005, IEEE Standard Installation, Inspection, and Testing Requirements for Power, Instrumentation, and Control Equipment at Nuclear Facilities. IEEE Std 338-1987 (Reaff 2000), IEEE Standard Criteria for the Periodic Surveillance Testing of Nuclear Power Generating Station Safe
37、ty Systems. IEEE Std 384-1992 (Reaff 1998), IEEE Standard Criteria for Independence of Class 1E Equipment and Circuits. IEEE Std 415-1986 (Reaff 1992), IEEE Guide for Planning of Preoperational Testing Programs for Class 1E Power Systems for Nuclear Power Generating Stations.3IEEE Std 446-1995, IEEE
38、 Recommended Practice for Emergency and Standby Power Systems for Industrial and Commercial Applications (IEEE Orange Book). IEEE Std 487-2000, IEEE Recommended Practice for the Protection of Wire-Line Communication Facilities Serving Electric Supply Locations. IEEE Std 518-1982 (Reaff 1997), IEEE G
39、uide for the Installation of Electrical Equipment to Minimize Electrical Noise Inputs to Controllers from External Sources.4 IEEE Std 603-1998, IEEE Standard Criteria for Safety Systems for Nuclear Power Generating Stations. IEEE Std 666-1991, IEEE Design Guide for Electric Power Service Systems for
40、 Generating Stations. IEEE Std 944-1986 (Reaff 1996), IEEE Recommended Practice for the Application and Testing of Uninterruptible Power Supplies for Power Generating Stations.5 IEEE Std 946-2004, IEEE Recommended Practice for the Design of DC Auxiliary Power Systems for Generating Stations. IEEE St
41、d 1050-2004, IEEE Guide for Instrumentation and Control Equipment Grounding in Generating Stations. IEEE Std 1290-1996, IEEE Guide for Motor Operated Valve (MOV) Motor Application, Protection, Control, and Testing in Nuclear Power Generating Stations. IEEE Std 1375-1998, IEEE Guide for the Protectio
42、n of Stationary Battery Systems. IEEE Std C37.91-2000, IEEE Guide for Protective Relay Applications to Power Transformers. IEEE Std C37.96-2000, IEEE Guide for AC Motor Protection. IEEE Std C62.2-1987 (Reaff 1994), IEEE Guide for the Application of Gapped Silicon-Carbide Surge Arresters for Alternat
43、ing Current Systems. 3IEEE Std 415-1986 (Reaff 1992) has been withdrawn; however, copies can be obtained from Global Engineering, 15 Inverness Way East, Englewood CO 80112-5704, USA, tel. (303) 792-2181 (http:/). 4IEEE Std 518-1982 (Reaff 1997) has been withdrawn; however, copies can be obtained fro
44、m Global Engineering, 15 Inverness Way East, Englewood CO 80112-5704, USA, tel. (303) 792-2181 (http:/). 5IEEE Std 944-1986 (Reaff 1996) has been withdrawn; however, copies can be obtained from Global Engineering, 15 Inverness Way East, Englewood CO 80112-5704, USA, tel. (303) 792-2181 (http:/). IEE
45、E Std 741-2007 IEEE Standard Criteria for the Protection of Class 1E Power Systems and Equipment in Nuclear Power Generating Stations 3 Copyright 2008 IEEE. All rights reserved. IEEE Std C62.23-1995 (Reaff 2001), IEEE Application Guide for Surge Protection of Electric Generating Plants. IEEE Std C62
46、.41-1991 (Reaff 1995), IEEE Recommended Practice on Surge Voltages in Low-Voltage AC Power Circuits. IEEE Std C62.45-2002, IEEE Guide on Surge Testing for Equipment Connected to Low-Voltage AC Power Circuits. IEEE Std C62.92.3-1993 (Reaff 2005), IEEE Guide for the Neutral Grounding in Electrical Uti
47、lity Systems, Part IIIGenerator Auxiliary Systems. NEMA ICS 2-2000, Industrial Control and Systems: Controllers, Contactors, and Overload Relays Rated 600 Volts.6NEMA MG 1-2003, Motors and Generators. 3. Definitions Clause B.2, The Authoritative Dictionary of IEEE Standards Terms B6,7and IEEE Std C3
48、7.100B10 should be referenced for terms used in this standard. 4. General design criteria As used in this standard, protection refers to the sense, command, and execute features with their associated interconnections (see IEEE Std 603-19988) that are provided to minimize equipment damage and any int
49、erruption of electrical service resulting from mechanical or electrical failures or other unacceptable conditions. Protection includes equipment required to support the Class 1E power system in the performance of its safety function, and components whose function is to increase the availability and reliability of the safety-related equipment. The protection shall be capable of the following: a) Preventing failures in safety systems and equipment from disa
