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21、23#23#23#23#23#23#23#23#23#23#23#23#23#23;#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23;#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23;#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23;#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23g55g48g38
22、;#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23#23IEEE Std C57.12.24-2009 (Revision of IEEE Std C57.12.24-1994) IEEE Standard for Submersible, Three-Phase Transformers, 3750 kVA and Smaller: High Voltage, 34 500 GrdY/19 920 Volts and Below; Low Voltage, 600 Volts and Below Spo
23、nsor Transformers Committee of the IEEE Power +1 978 750 8400. Permission to photocopy portions of any individual standard for educational classroom use can also be obtained through the Copyright Clearance Center. iv Copyright 2009 IEEE. All rights reserved. Introduction This introduction is not par
24、t of IEEE Std C57.12.24-2009, IEEE Standard for Submersible, Three-Phase Transformers, 3750 kVA and Smaller: High Voltage, 34 500 GrdY/19 920 Volts and Below; Low Voltage, 600 Volts and Below. This standard was originally a NEMA/ANSI standard last published as ANSI C57.12.24-2000. There were a numbe
25、r of technical omissions in that publication. This publication adds to those technical requirements and now publishes the standard as an IEEE document. Notice to users Laws and regulations Users of these documents should consult all applicable laws and regulations. Compliance with the provisions of
26、this standard 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 the publication of its standards, intend to urge action that is not in compliance wi
27、th applicable laws, and these documents may not be construed as doing so. Copyrights This document is copyrighted by the IEEE. It is made available 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, s
28、tandardization, and the promotion of engineering practices and methods. By making this document available for use and adoption by public authorities and private users, the IEEE does not waive any rights in copyright to this document. Updating of IEEE documents Users of IEEE standards should be aware
29、 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, corrigenda, or errata. An official IEEE document at any point in time consists of the current edition of the document together with any amendmen
30、ts, corrigenda, or errata then in effect. In order to determine whether a given document is the current edition and whether it has been amended through the issuance of amendments, corrigenda, or errata, visit the IEEE Standards Association web site at http:/ieeexplore.ieee.org/xpl/standards.jsp, or
31、contact the IEEE at the address listed previously. For more information about the IEEE Standards Association or the IEEE standards development process, visit the IEEE-SA web site at http:/standards.ieee.org. Errata Errata, if any, for this and all other standards can be accessed at the following URL
32、: http:/standards.ieee.org/reading/ieee/updates/errata/index.html. Users are encouraged to check this URL for errata periodically. v Copyright 2009 IEEE. All rights reserved. Interpretations Current interpretations can be accessed at the following URL: http:/standards.ieee.org/reading/ieee/interp/ i
33、ndex.html. 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 with respect to the existence or validity of any patent rights in connection therewith. The
34、 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 submission of a Letter of Assurance,
35、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 information may be obtained fr
36、om the IEEE Standards Association. Participants At the time this standard was submitted for approval, the Three-Phase Submersible Transformers Working Group had the following membership: Giuseppe Termini, Chair Ignacio Ares Israel Barrientos-Torres Dave Blew Paul Buchanan Jerry Corkran Joseph Cultre
37、ra Don Duckett Rich Graham Robert Grunert Mike Hardin Mohammed Hussain Alan Kasanow Gary King Brian Klaponski Dennis Lee Larry Lowdermilk Kent Miller Jock Moffat Dan Mulkey Carl Niemann Alfonso Nelson Ken Romano Dinesh Sankarakurup Christopher Sullivan John Sullivan Steve Snyder Alan Traut vi Copyri
38、ght 2009 IEEE. All rights reserved. The following members of the individual balloting committee voted on this standard. Balloters may have voted for approval, disapproval, or abstention. William J. Ackerman Samuel H. Aguirre William Bartley Steven Bezner Wallace Binder David Blew Chris Brooks Paul B
39、uchanan Thomas Callsen Yunxiang Chen Bill Chiu Tommy Cooper Jerry Corkran Gary Engmann Marcel Fortin Jalal Gohari James Graham Randall Groves Bal K. Gupta Ajit Gwal Kenneth Hanus Michael Hardin Jeffrey Hartenberger Gary Heuston James Huddleston, III Gary King Brian Klaponski Joseph L. Koepfinger Jim
40、 Kulchisky Chung-Yiu Lam Deni Lee G. Luri John W. Matthews Daniel Mulkey Michael S.Newman Carl Niemann Robert Olen Alvaro Portillo Iulian Profir Peter G. Risse Charles Rogers Ken Ramano Dinesh Pranathy Sankarakurup Bartien Sayogo Hyeong Sim Charles Simmons James E. Smith Jerry Smith Steve Snyder Joh
41、n Sullivan David Tepen Giuseppe Termini Alan Traut Joseph Tumidajski Joe Uchiyama John Vergis Jane Verner Alan Wilks James Wilson William Wimmer Donald Zipse When the IEEE-SA Standards Board approved this standard on 17 June 2009, it had the following membership: Robert M. Grow, Chair Thomas Prevost
42、, Vice Chair Steve M. Mills, Past Chair Judith Gorman, Secretary John Barr Karen Bartleson Victor Berman Ted Burse Richard DeBlasio Andy Drozd Mark Epstein Alexander Gelman Jim Hughes Richard H. Hulett Young Kyun Kim Joseph L. Koepfinger* John Kulick David J. Law Ted Olsen Glenn Parsons Ronald C. Pe
43、tersen Narayanan Ramachandran Jon Walter Rosdahl Sam Sciacca *Member Emeritus Also included are the following nonvoting IEEE-SA Standards Board liaisons: Howard L. Wolfman, TAB Representative Michael Janezic, NIST Representative Satish K. Aggarwal, NRC Representative Michelle Turner IEEE Standards P
44、rogram Manager, Document Development Matthew Ceglia IEEE Standards Program Manager, Technical Program Development vii Copyright 2009 IEEE. All rights reserved. Contents 1. Overview 1 1.1 Scope . 1 1.2 Purpose 1 2. Normative references 2 3. Definitions 2 4. Service conditions 2 4.1 Cooling air-temper
45、ature limit 2 4.2 Submerged operation. 3 5. Rating Data. 3 5.1 Cooling class . 3 5.2 Kilovolt-ampere ratings. 3 5.3 Voltage ratings. 3 5.4 Insulation levels. 4 5.5 Impedance 4 6. Tests . 5 6.1 General 5 6.2 Reference temperature. 5 7. Construction . 5 7.1 General 5 7.2 Connectors and terminals 8 7.3
46、 Accessories 11 7.4 Nameplate 12 7.5 Tank. 12 7.6 Components for primary cable system 15 7.7 Angular displacement 15 7.8 Audible sound levels . 15 8. Storage and installation 15 8.1 Storage. 15 8.2 Installation . 15 Annex A (informative) Bibliography . 16 1 Copyright 2009 IEEE. All rights reserved.
47、IEEE Standard for Submersible, Three-Phase Transformers, 3750 kVA and Smaller: High Voltage, 34 500 GrdY/19 920 Volts and Below; Low Voltage, 600 Volts and Below IMPORTANT NOTICE: This standard is not intended to ensure safety, security, health, or environmental protection in all circumstances. Impl
48、ementers of the standard are responsible for determining appropriate safety, security, environmental, and health practices or regulatory requirements. This IEEE document is made available for use subject to important notices and legal disclaimers. These notices and disclaimers appear in all publicat
49、ions containing this document and may be found under the heading “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 standard covers certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety features of three-phase, 60 Hz, liquid-immersed, self-cooled, submersible transformers with separable insulated high-voltage connectors. These transformers are rated 3750 kV
