1、 IEEE Standard for Qualification of Class 1E Transformers for Nuclear Power Generating Stations Sponsored by the Transformers Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA IEEE Power and Energy Society IEEE Std 638-2013 (Revision of IEEE Std 638-1992) IEEE Std 638-2013 (Revision of IEEE S
2、td 638-1992) IEEE Standard for Qualification of Class 1E Transformers for Nuclear Power Generating Stations Sponsor Transformers Committee of the IEEE Power and Energy Society Approved 11 December 2013 IEEE-SA Standards Board Abstract: Procedures for demonstrating the adequacy of new Class 1E transf
3、ormers, located in a mild environment of a nuclear power generating station, to perform their required safety functions under postulated service conditions are presented. Single- and three-phase transformers rated 601 V to 15 000 V for the highest voltage winding and up to 2500 kVA (self-cooled rati
4、ng) are covered. Because of the conservative approach used in the development of this new standard for new transformers, the end-point criteria cannot be used for in-service transformers. Keywords: Class 1E transformers, design qualification, IEEE 638, seismic qualification The Institute of Electric
5、al and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2014 by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 11 March 2014. Printed in the United States of America. IEEE is a registered trademark in the U.S. Patent fitnes
6、s for a particular purpose; non-infringement; and quality, accuracy, effectiveness, currency, or completeness of material. In addition, IEEE disclaims any and all conditions relating to: results; and workmanlike effort. IEEE standards documents are supplied “AS IS” and “WITH ALL FAULTS.” Use of an I
7、EEE standard is wholly voluntary. The existence of an IEEE standard does not imply that there are no other ways to produce, test, measure, purchase, market, or provide other goods and services related to the scope of the IEEE standard. Furthermore, the viewpoint expressed at the time a standard is a
8、pproved and issued is subject to change brought about through developments in the state of the art and comments received from users of the standard. In publishing and making its standards available, IEEE is not suggesting or rendering professional or other services for, or on behalf of, any person o
9、r entity nor is IEEE undertaking to perform any duty owed by any other person or entity to another. Any person utilizing any IEEE Standards document, should rely upon his or her own independent judgment in the exercise of reasonable care in any given circumstances or, as appropriate, seek the advice
10、 of a competent professional in determining the appropriateness of a given IEEE standard. IN NO EVENT SHALL IEEE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO: PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA
11、, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE PUBLICATION, USE OF, OR RELIANCE UPON ANY STANDARD, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAG
12、E AND REGARDLESS OF WHETHER SUCH DAMAGE WAS FORESEEABLE. Translations The IEEE consensus development process involves the review of documents in English only. In the event that an IEEE standard is translated, only the English version published by IEEE should be considered the approved IEEE standard.
13、 Official statements A statement, written or oral, that is not processed in accordance with the IEEE-SA Standards Board Operations Manual shall not be considered or inferred to be the official position of IEEE or any of its committees and shall not be considered to be, or be relied upon as, a formal
14、 position of IEEE. At lectures, symposia, seminars, or educational courses, an individual presenting information on IEEE standards shall make it clear that his or her views should be considered the personal views of that individual rather than the formal position of IEEE. Comments on standards Comme
15、nts for revision of IEEE Standards documents are welcome from any interested party, regardless of membership affiliation with IEEE. However, IEEE does not provide consulting information or advice pertaining to IEEE Standards documents. Suggestions for changes in documents should be in the form of a
16、proposed change of text, together with appropriate supporting comments. Since IEEE standards represent a consensus of concerned interests, it is important that any responses to comments and questions also receive the concurrence of a balance of interests. For this reason, IEEE and the members of its
17、 societies and Standards Coordinating Committees are not able to provide an instant response to comments or questions except in those cases where the matter has previously been addressed. For the same reason, IEEE does not respond to interpretation requests. Any person who would like to participate
18、in revisions to an IEEE standard is welcome to join the relevant IEEE working group. Comments on standards should be submitted to the following address: Secretary, IEEE-SA Standards Board 445 Hoes Lane Piscataway, NJ 08854 USA Laws and regulations Users of IEEE Standards documents should consult all
19、 applicable laws and regulations. Compliance with the provisions of any IEEE Standards document does not imply compliance to any applicable regulatory requirements. Implementers of the standard are responsible for observing or referring to the applicable regulatory requirements. IEEE does not, by th
20、e publication of its standards, intend to urge action that is not in compliance with applicable laws, and these documents may not be construed as doing so. Copyrights IEEE draft and approved standards are copyrighted by IEEE under U.S. and international copyright laws. They are made available by IEE
21、E and are adopted for a wide variety of both public and private uses. These include both use, by reference, in laws and regulations, and use in private self-regulation, standardization, and the promotion of engineering practices and methods. By making these documents available for use and adoption b
22、y public authorities and private users, IEEE does not waive any rights in copyright to the documents. Photocopies Subject to payment of the appropriate fee, IEEE will grant users a limited, non-exclusive license to photocopy portions of any individual standard for company or organizational internal
23、use or individual, non-commercial use only. To arrange for payment of licensing fees, please contact Copyright Clearance Center, Customer Service, 222 Rosewood Drive, Danvers, MA 01923 USA; +1 978 750 8400. Permission to photocopy portions of any individual standard for educational classroom use can
24、 also be obtained through the Copyright Clearance Center. Updating of IEEE Standards documents Users of IEEE Standards documents should be aware that these documents may be superseded at any time by the issuance of new editions or may be amended from time to time through the issuance of amendments,
25、corrigenda, or errata. An official IEEE document at any point in time consists of the current edition of the document together with any amendments, corrigenda, or errata then in effect. Every IEEE standard is subjected to review at least every ten years. When a document is more than ten years old an
26、d has not undergone a revision process, it is reasonable to conclude that its contents, although still of some value, do not wholly reflect the present state of the art. Users are cautioned to check to determine that they have the latest edition of any IEEE standard. In order to determine whether a
27、given document is the current edition and whether it has been amended through the issuance of amendments, corrigenda, or errata, visit the IEEE-SA Website at http:/ieeexplore.ieee.org/xpl/standards.jsp or contact IEEE at the address listed previously. For more information about the IEEE SA or IEEEs
28、standards development process, visit the IEEE-SA Website at http:/standards.ieee.org. Errata Errata, if any, for all IEEE standards can be accessed on the IEEE-SA Website at the following URL: http:/standards.ieee.org/findstds/errata/index.html. Users are encouraged to check this URL for errata peri
29、odically. Patents Attention is called to the possibility that implementation of this standard may require use of subject matter covered by patent rights. By publication of this standard, no position is taken by the IEEE with respect to the existence or validity of any patent rights in connection the
30、rewith. If a patent holder or patent applicant has filed a statement of assurance via an Accepted Letter of Assurance, then the statement is listed on the IEEE-SA Website at http:/standards.ieee.org/about/sasb/patcom/patents.html. Letters of Assurance may indicate whether the Submitter is willing or
31、 unwilling to grant licenses under patent rights without compensation or under reasonable rates, with reasonable terms and conditions that are demonstrably free of any unfair discrimination to applicants desiring to obtain such licenses. Essential Patent Claims may exist for which a Letter of Assura
32、nce has not been received. The IEEE is not responsible for identifying Essential Patent Claims for which a license may be required, for conducting inquiries into the legal validity or scope of Patents Claims, or determining whether any licensing terms or conditions provided in connection with submis
33、sion of a Letter of Assurance, if any, or in any licensing agreements are reasonable or non-discriminatory. Users of this standard are expressly advised that determination of the validity of any patent rights, and the risk of infringement of such rights, is entirely their own responsibility. Further
34、 information may be obtained from the IEEE Standards Association. Copyright 2014 IEEE. All rights reserved. vi Participants At the time this IEEE standard was completed, the Qualification of Class 1E Transformers Working Group had the following membership: Craig Swinderman, Chair Kent Brown P. Ghosh
35、 L. Johannson W. Johnson Thomas Lundquist Richard Marek L. Stensland Robert Thompson K. Yule The following members of the individual balloting committee voted on this standard. Balloters may have voted for approval, disapproval, or abstention. William Ackerman Sattish Aggarwal Ali Al Awazi Robert Ba
36、llard Barry Beaster Robert Beavers Wallace Binder Thomas Blackburn William Bloethe Thomas Brewington Daniel Brosnan Kent Brown Nissen Burstein Paul Cardinal Suresh Channarasappa Garry Chapman Weijen Chen Jerry Corkran Willaim Darovny Ray Davis John Disosway Wells Fargo David Gilmer Jalal Gohari Rand
37、all Groves Ajit Gwal Hamidreza Heidarisafa Gary Heuston Werner Hoelzl Gary Hoffman Philip Hopkinson David Horvath Paul Johnson C. Kalra Yuri Khersonsky Joseph L. Koepfinger Thomas Koshy Jim Kulchisky Saumen Kundu John Lackey Chung-Yiu Lam Michael Lauxman Thomas Lundquist Greg Luri Richard Marek Mich
38、ael May Frank Mayle Joseph Melanson John Merando T. David Mills K. R. M. Nair Michael Newman Raymond Nicholas Mirko Palazzo Bansi Patel Dhiru Patel Jan Pirrong Alvaro Portillo Michael Roberts John Rossetti Bartien Sayogo Glen Schinzel Ewald Schweiger Stephen Shull Gil Shultz James Smith Robert Thomp
39、son John Vergis Jane Verner David Wallach Michael Waterman Kenneth White Roger Wicks Copyright 2014 IEEE. All rights reserved. vii When the IEEE-SA Standards Board approved this standard on 11 December 2013, it had the following membership: John Kulick, Chair David J. Law, Vice Chair Richard H. Hule
40、tt, Past Chair Konstantinos Karachalios, Secretary Masayuki Ariyoshi Peter Balma Farooq Bari Ted Burse Stephen Dukes Jean-Phillippe Faure Alexander Gelman Mark Halpin Gary Hoffman Paul Houz Jim Hughes Michael Janezic Joseph L. Koepfinger* Oleg Logvinov Ron Peterson Gary Robinson Jon Walter Rosdahl A
41、drian Stephens Peter Sutherland Yatin Trivedi Phil Winston Yu Yuan *Member Emeritus Also included are the following nonvoting IEEE-SA Standards Board liaisons: Richard DeBlasio, DOE Representative Michael Janezic, NIST Representative Michelle Turner IEEE Standards Program Manager, Document Developme
42、nt Erin Spiewak IEEE Standards Program Manager, Technical Program Development Copyright 2014 IEEE. All rights reserved. viii Introduction This introduction is not part of IEEE Std 638-2013, IEEE Standard for Qualification of Class 1E Transformers for Nuclear Power Generating Stations. This latest re
43、vision to the IEEE Std 638 is a revision of IEEE Std 638-1992 and is the result of a review of IEEE Std 638-1992 and present practices in Class 1E transformer qualification. This revision incorporates current practices and lessons learned from the implementation of previous versions of this standard
44、 by the industry. IEEE Std 638 was developed to provide specific methods and test procedures for the qualification of Class 1E transformers in accordance with IEEE Std 323, which provides guidance for demonstrating and documenting the qualification of electrical equipment used in all Class 1E and in
45、terface systems. This latest revision has clarified or updated a number of items, including removing references to old IEEE standards that are no longer in use today, incorporating the information from the 7 April 1999 Correction to IEEE 638-1992 into the body of the document, and updating certain a
46、spects of the document to be more in line with the latest versions of the related transformer standards referenced in this document. Additionally, the modern technique of frequency response analysis (FRA) was incorporated into the qualification tests to be performed as part of this standard. Perform
47、ing the FRA tests before and after the short-circuit test and seismic test will provide better insight into the actual condition of the transformer after completion of these two significant tests, further improving the understanding of the tested transformer designs capability to withstand such even
48、ts in operation. Adherence to this document alone may not suffice for assuring public health and safety because it is the integrated performance of the structures, fluid systems, instrumentation systems, and electrical systems of the nuclear power generating station that establish safe operating con
49、ditions. This standard was prepared by Working Group P638 of the Power Transformers Subcommittee of the Transformers Committee of the IEEE Power and Energy Society. Copyright 2014 IEEE. All rights reserved. ix Contents 1. Overview 1 1.1 Scope . 1 1.2 Purpose 1 2. Normative references 2 3. Definitions 3 4. Transformer specifications . 3 4.1 Minimum information . 3 4.2 Service conditions 3 4.3 Equipment performance requirements . 3 4.4 Seismic requirements . 3 4.5 Electrical, mechanical, and structural interfaces 4 4.6 Industry codes and standards . 4 4.7 Impedance 4 4.8
