IEEE C57 12 40-2017 en Network Three-Phase Transformers 2500 kVA and Smaller High Voltage 34 500 V and Below Low Voltage 600 V and Below Subway and Vault Types .pdf

1、IEEE Standard for Network, Three-Phase Transformers, 2500 kVA and Smaller; High Voltage, 34 500 V and Below; Low Voltage, 600 V and Below; Subway and Vault Types (Liquid Immersed)IEEE Std C57.12.40-2017(Revision of IEEE Std C57.12.40-2011)IEEE Power and Energy SocietySponsored by the Transformers Co

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30、d 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 2017 IEEE. All rights reserved. 6 Participants At the time this IEEE standa

31、rd was completed, the C57.12.40 Working Group had the following membership: Brian Klaponski, Chair Edward Bertolini David Blew John Crouse Joseph Cultrera Larry Dix Will Elliott Mark Faulkner Said Hachichi Michael Harden Alejandro Macias Libin Mao Charles Morgan Daniel Mulkey George Payerle Adam Sew

32、ell Jeremy Sewell Russell Sewell Anastasios Taousakis Giuseppe Termini Lee Welch William Wimmer 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 William B

33、yrd Paul Cardinal Kurt Clemente John Crouse Glenn Davis Gary Donner William Elliott Michael Faulkenberry Jorge Fernandez Daher Bruce Forsyth Marcel Fortin Fredric Friend Edwin Goodwin Randall Groves Said Hachichi John Harley Jeffrey Helzer Joshua Herz Werner Hoelzl Thomas Holifield Philip Hopkinson

34、Mohammad Iman John John Charles Johnson Sheldon Kennedy Yuri Khersonsky Gary King Brian Klaponski Axel Kraemer Jim Kulchisky John Lackey Mikhail Lagoda Chung-Yiu Lam Aleksandr Levin Tim-Felix Mai Richard Marek William McBride Charles McShane C.Michael MillerDaleep MohlaCharles MorganDaniel MulkeyK.

35、R. M. NairMichael NewmanBansi PatelDhiru PatelGeorge PayerleBranimir PetosicChristopher PetrolaAlvaro Portillo Charles Rogers Thomas Rozek Daniel Sauer Bartien Sayogo Stephen Schroeder Jeremy Sewell Nikunj Shah Xu She Jeremy Smith Jerry Smith Gary Smullin Ronald Stahara Wayne Stec Christopher Sulliv

36、an John Sullivan Michael Thompson Kiran Vedante Roger Verdolin John Vergis Jane Verner John Wang Lee Welch Kenneth White William Wimmer Jian YuCopyright 2017 IEEE. All rights reserved. 7 When the IEEE-SA Standards Board approved this standard on 18 May 2017, it had the following membership: Jean-Phi

37、lippe Faure, Chair Gary Hoffman, Vice Chair John D. Kulick, Past Chair Konstantinos Karachalios, Secretary Chuck Adams Masayuki Ariyoshi Ted Burse Stephen Dukes Doug Edwards J.Travis GriffithMichael JanezicThomas KoshyJoseph L. Koepfinger* Kevin Lu Daleep Mohla Damir Novosel Ronald Petersen Annette

38、D. Reilly Robby Robson Dorothy Stanley Adrian Stephens Mehmet Ulema Phil Wennblom Howard Wolfman Yu Yuan *Member Emeritus8 Copyright 2017 IEEE. All rights reserved. Introduction This introduction is not part of IEEE Std C57.12.40-2017 for IEEE Standard for Network, Three-Phase Transformers, 2500 kVA

39、 and Smaller; High Voltage, 34 500 V and Below; Low Voltage, 600 V and Below; Subway and Vault Types (Liquid Immersed). This standard is an update to IEEE Std C57.12.40TM-2011, which marked the first full technical update to this standard since it was published as a NEMA/ANSI standard called C57.12.

40、40-2000. The 2011 revision reorganized clauses and made major changes to clarify the requirements for the primary disconnect and grounding switch. This revision clarifies the Applied Voltage Test in Table 2, introduces a stainless steel tank alternative to copper-bearing steel, eliminates the use of

41、 primary wiping sleeves, changes the primary switch chamber to a single compartment, and adds an informative Annex B. 9 Copyright 2017 IEEE. All rights reserved. Contents 1. Overview 10 1.1 Scope . 10 1.2 Purpose 10 2. Normative references 10 3. Transformer performance requirements . 11 3.1 Kilovolt

42、ampere ratings . 11 3.2 Voltage rating and tap ratings 12 3.3 Angular displacement 12 3.4 Basic lightning impulse insulation levels (BILs) . 13 3.5 Percent impedance . 13 3.6 Audible sound levels . 13 4. Tests . 13 5. Construction . 14 5.1 General 14 5.2 Corrosion resistance 14 5.3 Tank . 15 5.4 Co

43、oling panels . 16 5.5 Primary switch chamber 16 5.6 Secondary network protector throat . 17 5.7 Accessory equipment for transformer tanks 18 5.8 Dimensions 19 6. Primary disconnect and grounding switch 21 6.1 General 21 6.2 Network switch electrical performance requirements . 21 7. Bushings . 25 7.1

44、 Bushings and bushing wells . 25 7.2 Primary bushings between main tank and switch chamber . 25 7.3 Secondary bushings . 25 7.4 Terminal markings . 26 8. Neutral termination . 26 8.1 Primary neutral 26 8.2 Secondary neutral 26 9. Nameplate . 27 10. Connections of transformer for shipment by manufact

45、urer 27 Annex A (informative) Bibliography . 33 Annex B (informative) Coordination of bushing selection and application . 34 IEEE Standard for Network, Three-Phase Transformers, 2500 kVA and Smaller; High Voltage, 34 500 V and Below; Low Voltage, 600 V and Below; Subway and Vault Types (Liquid Immer

46、sed) 1. Overview1.1 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, network transformers with a primary grounding switch. These transformers are rated

47、2500 kVA and below with high voltages of 34 500 volts and below and secondaries of 600 volts and below. These transformers are generally used for step-down purposes from underground primary cables and supply a secondary network system through network protectors. These transformers are typically inst

48、alled below ground level. 1.2 Purpose This standard is intended for use as a basis for establishing the performance, electrical and mechanical interchangeability, safety of the equipment covered, and to assist in the proper selection of such equipment. 2. Normative referencesThe following referenced

49、 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, the latest edition of the referenced document (including any amendments or corrigenda) applies. 10 Copyright 2017 IEEE. All rights reserved. IEEE Std C57.12.40-2017 IEEE Standard for Network, Three-Phase Transformers, 2500 kVA and Smaller; High Voltage, 34 500 V and Below; Low Vol