1、 IEEE Standard Requirements for Arc Furnace Transformers Sponsored by the Transformers Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA 7 February 2013 IEEE Power and Energy Society IEEE Std C57.17-2012 IEEE Std C57.17-2012 IEEE Standard Requirements for Arc Furnace Transformers Sponsor Tran
2、sformers Committee of the IEEE Power and Energy Society Approved 5 December 2012 IEEE-SA Standards Board Abstract: The electrical characteristics and mechanical features of liquid-immersed transformers 69 kV or less (but not limited to 69 kV), used for supplying electric power to direct arc-melting
3、furnaces are covered in this standard. Keywords: capacitors, electric arc furnace transformer, IEEE C57.17, low voltage terminal construction, RC circuits, reignitions, restrikes, supplementary reactor (use of) The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 1
4、0016-5997, USA Copyright 2013 by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 7 February 2013. Printed in the United States of America. IEEE is a registered trademark in the U.S. Patent +1 978 750 8400. Permission to photocopy portions of any individual
5、standard for educational classroom use can also be obtained through the Copyright Clearance Center. Copyright 2013 IEEE. All rights reserved. iv Notice to users Laws and regulations Users of IEEE Standards documents should consult all applicable laws and regulations. Compliance with the provisions o
6、f 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 the publication of its standards, intend to urge action that is not
7、in compliance with 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 se
8、lf-regulation, standardization, 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
9、 documents should be aware that these documents may be superseded at any time by the issuance of new editions or may be amended from time to time through the issuance of amendments, corrigenda, or errata. An official IEEE document at any point in time consists of the current edition of the document
10、together with any amendments, 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-SA Website at http:/standards.ieee.org/index.html or con
11、tact the IEEE at the address listed previously. For more information about the IEEE Standards Association or the IEEE standards development process, visit IEEE-SA Website at http:/standards.ieee.org/index.html. Errata Errata, if any, for this and all other standards can be accessed at the following
12、URL: http:/standards.ieee.org/findstds/errata/index.html. Users are encouraged to check this URL for errata periodically. Copyright 2013 IEEE. All rights reserved. v Patents Attention is called to the possibility that implementation of this standard may require use of subject matter covered by paten
13、t 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 therewith. If a patent holder or patent applicant has filed a statement of assurance via an Accepted Letter of Assurance, then the statement is lis
14、ted 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 unwilling to grant licenses under patent rights without compensation or under reasonable rates, with reasonable terms and conditions that are d
15、emonstrably free of any unfair discrimination to applicants desiring to obtain such licenses. Essential Patent Claims may exist for which a Letter of Assurance has not been received. The IEEE is not responsible for identifying Essential Patent Claims for which a license may be required, for conducti
16、ng 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, if any, or in any licensing agreements are reasonable or non-discriminatory. Users of this standard are expressly
17、 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 from the IEEE Standards Association. Copyright 2013 IEEE. All rights reserved. viParticipants At the time this IEEE
18、 standard was completed, the Power Transformers Arc Furnace Transformer Requirements Working Group had the following membership: Robert G. Ganser, Sr., Chair Dominic Corsi, Past Chair Robert G. Ganser, Jr., Secretary William Bartley William Boettger Frank DiAmico Dieter Dohnal Eduardo Garcia Peter H
19、einzig Sheldon Kennedy Thomas Lundquist Ugo Piovan Joe Rachford Dave Wiegand The following members of the individual balloting committee voted on this standard. Balloters may have voted for approval, disapproval, or abstention. Peter Balma Wallace Binder Thomas Blackburn W Boettger Paul Boman Willia
20、m Bush Paul Cardinal Bill Chiu John Crouse Dieter Dohnal Gary Donner Gary Engmann Jorge Fernandez Daher Joseph Foldi Marcel Fortin Robert Ganser David Gilmer Jalal Gohari Randall Groves David Harris Timothy Hayden Roger Hayes Jeffrey Helzer Gary Heuston Gael Kennedy Sheldon Kennedy Joseph L. Koepfin
21、ger Jim Kulchisky Saumen Kundu John Lackey Chung-Yiu Lam Stephen Lambert Thomas Lundquist Greg Luri Richard Marek J.Dennis Marlow Daniel Mulkey Ryan Musgrove K. R. M. Nair Michael S. Newman Lorraine Padden Bansi Patel Ugo Piovan Alvaro Portillo Reynaldo Ramos John Roach Michael Roberts Oleg Roizman
22、Marnie Roussell Dinesh Sankarakurup Bartien Sayogo Hyeong Sim James Smith Jerry Smith Gary Stoedter David Tepen John Vergis Jane Verner Kenneth White Matthew Wilkowski James Wilson Jian Yu Copyright 2013 IEEE. All rights reserved. vii When the IEEE-SA Standards Board approved this standard on 5 Dece
23、mber 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 Burse Clint Chaplin Wael Diab Jean-Philippe Faure Alexander Gelman Paul Houz J
24、im Hughes Joseph L. Koepfinger* David J. Law Thomas Lee Hung Ling Oleg Logvinov Ted Olsen Gary Robinson Jon Walter Rosdahl Sam Sciacca Mike Seavey Yatin Trivedi Phil Winston Don Wright *Member Emeritus Also included are the following nonvoting IEEE-SA Standards Board liaisons: Richard DeBlasio, DOE
25、Representative Michael Janezic, NIST Representative Patrick Gibbons IEEE Standards Program Manager, Document Development Erin Spiewak IEEE Standards Program Manager, Technical Program Development Copyright 2013 IEEE. All rights reserved. viiiIntroduction This introduction is not part of IEEE Std C57
26、.17-2012, IEEE Standard Requirements for Arc Furnace Transformers. In a paper entitled “Relation of Power Input and Controls to Efficiency and Quality of Steel Production,” by Mr. Charles W. Vokac, presented on December 5, 1952, at the Electric Furnace Steel Conference in Pittsburgh, Pennsylvania (r
27、ecorded in the Electric Furnace Steel Proceedings, American Institute of Mining and Metallurgical Engineers, 1952, pp 6285) B21, the following was stated: Standardization of transformer specifications is another way to increase the efficiency of steel production by reducing the initial cost of the t
28、ransformer. Every builder and designer of transformers is ready to state how standardization will reduce costs and improve delivery. Their cooperation in this effort is assured. It will take also the cooperation of furnace builders and of the furnace users particularly, to realize this economy for t
29、heir benefit. In an effort to get such a program started, the author offers some preliminary Standard Arc furnace Specifications for consideration by a representative committee selected by this or any other interested organization . . . . This paper became the basis for the original USA Standard. Or
30、iginally, the task was undertaken by the Foundry Equipment Manufacturers Association (FEMA). Soon FEMA was joined by other standardization committees from AIEE (now IEEE) and the National Electrical Manufacturers Association (NEMA) to form the Joint Committee on Standards for Arc Furnace Transformer
31、s. This joint committee developed the original standard for submittal to ASA Sectional Committee C57 for approval as an American Standard. In 1965, ANSI issued the C57.17 standard. The standards last revision was in 1971 and last published on February 29, 1988. In the fall of 2002, a task force was
32、formed to determine if there was a need to revise this standard or if it was appropriate to reaffirm as written. The need to revise was apparent to update specific technologies, correct errors, and update the document format. This standard is a voluntary consensus standard. Its use may become mandat
33、ory only when required by a duly constituted legal authority, or when specified in a contractual relationship. To meet specialized needs and to allow innovation, specific changes are permissible when mutually determined by the user and the producer, provided that such changes do not violate existing
34、 laws, and are considered technically adequate for the function intended. It is of note that when measuring resistance for losses or temperature rise tests on low voltage, high-current windings having very low resistance are prone to relatively large measurement errors. Connection losses may also al
35、ter normal resistance and loss measurements. This standard was processed and approved for submittal to IEEE by Accredited Standards Committee on Transformers, Regulators, and Reactors, C57. Committee approval of the standard does not necessarily imply that all committee members voted for its approva
36、l. Copyright 2013 IEEE. All rights reserved. ix Contents 1. Overview 1 1.1 Scope . 1 1.2 Purpose 1 1.3 Word usage 1 2. Normative references 2 3. Definitions 2 4. Ratings 3 4.1 General requirements for ratings . 3 4.2 Transformer kVA ratings . 4 4.3 High- and low-voltage ratings . 4 4.4 Current ratin
37、gs . 6 4.5 Vector relationships . 6 5. Insulation news . 6 5.1 High-voltage terminals and windings 6 5.2 Low-voltage terminals and windings . 7 6. Impedance voltage 8 6.1 Background 8 6.2 Reactor impedance 8 7. Connections 9 7.1 High-voltage connections 9 7.2 Low-voltage connections . 9 8. Testing 9
38、 8.1 Routine tests 9 8.2 Ratio tests .10 8.3 Polarity and phase relation 10 8.4 Resistance measurements .11 8.5 No-load losses and excitation current .11 8.6 Load losses and impedance tests 11 8.7 Temperature rise tests .12 8.8 Dielectric tests 12 8.9 Short-circuit tests 13 9. Construction 13 9.1 Sp
39、ecifications13 9.2 Terminals 13 9.3 Accessories .15 9.4 Designations and nameplates 20 9.5 De-energized tap changers 20 9.6 Load tap changers .21 9.7 Tank and case construction .22 Annex A (informative) Direct-current arc-furnace transformers .23 Annex B (informative) IEEE Guide for Arc-Furnace Prot
40、ection 24 Copyright 2013 IEEE. All rights reserved. x Annex C (informative) Replacement and remanufacturing of low-voltage bus bars 34 Annex D (informative) Bid document checklist 40 Annex E (informative) Bibliography .42 Copyright 2013 IEEE. All rights reserved. 1IEEE Standard Requirements for Arc
41、Furnace Transformers IMPORTANT NOTICE: IEEE 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 a
42、ll appropriate safety, security, environmental, 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
43、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 electrical chara
44、cteristics and mechanical features of liquid-immersed transformers 69 kV or less (but not limited to 69 kV), used for supplying electric power to direct arc-melting furnaces. All characteristics and definitions, except as specifically covered in this standard, shall be in accordance with the IEEE Re
45、quirements for Liquid-Immersed Distribution, Power, and Regulating Transformer (C57.12 Series). 1.2 Purpose The purpose is to provide an industry standard on the design and application of power and distribution transformers for the specific application of feeding arc furnaces and related foundry equ
46、ipment. 1.3 Word usage In this document, the word shall is used to indicate a mandatory requirement. The word should is used to indicate a recommendation. The word may is used to indicate a permissible action. IEEE Std C57.17-2012 IEEE Standard for Requirements for Arc Furnace Transformers Copyright
47、 2013 IEEE. All rights reserved. 2 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 re
48、ferences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies. ANSI C84.1-1995, Electric Power Systems and Equipment Voltage Ratings (60 Hz). ASME B1.1, Unified Inch Screw Threads, UN and UNR Thread Fo
49、rm. ASME B1.20.1, Pipe Threads, General Purpose (Inch). IEEE Std C57.12.00TM, IEEE Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers. IEEE Std C57.12.10TM, IEEE Standard Requirements for Liquid-Immersed Power Transformers. IEEE Std C57.12.70TM, Standard Terminal Markings and Connections for Distribution and Power Transformers. IEEE Std C57.12.90TM, Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers. IEEE Std C57.19.01TM, IEEE Standard Performance Characteristics and Di
