1、IEEE Std C37.04a-2003(Amendment to IEEE Std C37.04-1999)IEEE StandardsC37.04aTMIEEE Standard Rating Structure for ACHigh-Voltage Circuit Breakers Rated on aSymmetrical Current BasisAmendment 1: Capacitance CurrentSwitchingPublished by The Institute of Electrical and Electronics Engineers, Inc.3 Park
2、 Avenue, New York, NY 10016-5997, USA25 July 2003IEEE Power Engineering SocietySponsored by theSwitchgear CommitteeIEEE StandardsPrint: SH95126PDF: SS95126This amendment is an approved IEEEStandard. It will be incorporated into thebase standard in a future edition.The Institute of Electrical and Ele
3、ctronics Engineers, Inc.3 Park Avenue, New York, NY 10016-5997, USACopyright 2003 by the Institute of Electrical and Electronics Engineers, Inc.All rights reserved. Published 25 July 2003. Printed in the United States of America.IEEE is a registered trademark in the U.S. Patent +1 978 750 8400. Perm
4、ission to photocopy portions of any individual standard for educationalclassroom use can also be obtained through the Copyright Clearance Center.Note: Attention is called to the possibility that implementation of this standard may require use of subject mat-ter covered by patent rights. By publicati
5、on of this standard, no position is taken with respect to the existence orvalidity of any patent rights in connection therewith. The IEEE shall not be responsible for identifying patentsfor which a license may be required by an IEEE standard or for conducting inquiries into the legal validity orscop
6、e of those patents that are brought to its attention.Copyright 2003 IEEE. All rights reserved. iiiIntroduction(This introduction is not part of IEEE Std C37.04a-2003, IEEE Standard Rating Structure for AC High-Voltage CircuitBreakers Rated on a Symmetrical Current BasisAmendment 1: Capacitance Curre
7、nt Switching.)The capacitance current switching standards have been completely revised. A joint IEEE-IEC task forcedeveloped a revised approach to capacitance current switching standardization. IEC has published this taskforces work as part of IECs new circuit breaker standard, designated IEC 62271-
8、100:2003 B2a. IEC62271-100:2003 superceded IEC 60056:1987. In May 1995 in the interest of harmonization of high-voltage circuit breaker standards, a joint meeting of theIEC 17A, the IEEE/PES Switchgear Committee, and the IEEE/PES Substations Committee was held inVienna, VA. One of the outcomes of th
9、at meeting was a decision to form a joint IEEE-IEC task force torevise the standards for capacitance current switching. The task force was given the IEC designation “IECSC17A WG21 TF10.” It was agreed that the work of this task force (TF10) would serve as the basis forcapacitance current switching s
10、tandards in IEC and IEEE. TF10 had two 2-day meetingsone in Clamart,France, in September 1995 and one in Berlin, Germany, in December 1995.TF10 was composed of the following individuals:R. OLeary IEEER. W. Alexander IEEER. Jeanjean IEEE and IECD. Dufournet IEEE and IECH. Kempen IECP. Riffon IECM. Se
11、eger IECN. Trapp IECThe work of TF10 has been incorporated into the new IEC circuit breaker standard, IEC 62271-100, pub-lished in May 2001 (originally IEC 60056:1987) and now in its present edition, IEC 62271-100:2003 B2).IEEE Std C37.04a-2003 along with IEEE PC37.09a B4 and a revised set of tables
12、 in ANSI C37.06-2000B1 collectively form the IEEE version that corresponds to the capacitance current switching portion of IEC62271-100:2003. Slight modifications to the IEC version have been made to reflect North American prac-tice. Additionally, slight modifications to the text have been made for
13、the North American reader, such as“ground” has replaced “earth”. Most of the text is the same and certain usage may be unfamiliar, but isunderstandable to the discriminating reader. In keeping with IEC circuit breaker standard philosophy, the capacitance current switching ratings have been“unbundled
14、.” A “basic” circuit breaker has either an overhead line switching rating (outdoor circuit breaker)or a cable switching rating (indoor circuit breaker). Capacitor bank ratings, both single bank and back toback, or additional overhead or cable ratings must be specified separately. Two classes of circ
15、uit breaker regarding restriking performance are specified. “Class C1” has a restrikingperformance similar to the old “definite purpose circuit breaker” defined in IEEE Std C37.04-1999 and iscalled low probability of restrike. Class C2 is intended to have a very low probability of restriking of abou
16、t1/10 or less than the probability of a Class C1 circuit breaker. The probability of restrike classification isapplicable to all rated capacitance current ratings. For circuit breakers rated 362 kV and above, a single-phase test voltage factor of 1.4 (recovery voltage of2.8 per unit) is required for
17、 the overhead line switching test duties. (The 1.4 single-phase test voltage factorrequirement is only an option in IEC 62271-100:2003 B2.) The purpose of this requirement is to acknowl-edge the long transmission lines and low coefficient of grounding, common in North America. The 1.4 sin-aThe numbe
18、rs in brackets correspond to the numbers of the bibliography in Annex A.iv Copyright 2003 IEEE. All rights reserved.gle-phase test voltage factor is an increase from the 1.2 single-phase test voltage factor (2.4 pu recoveryvoltage) requirement in IEEE Std C37.04-1999. For circuit breakers rated 72.5
19、 kV and below, the same 1.4single-phase test voltage factor is required for all capacitance current switching duties. The 1.4 single-phasetest voltage factor is to allow for the many ungrounded systems that exist at 72.5 kV and below. IEC 62271-100:2003 B2 requires this only at 52 kV and below. This
20、 is a slight decrease in the requirement for a 1.5single-phase test voltage factor (3.0 pu recovery voltage) for capacitance current testing in IEEE StdC37.09-1999.ANSI/IEEE Std C37.012-1979 B3 is being revised to align with this new approach and to alert the userconcerning these changes.Copyright 2
21、003 IEEE. All rights reserved. vParticipantsThe Accredited Standards Committee on Power Switchgear, C37, which reviewed and approved this amend-ment, had the following members at the time of approval:T. W. Olsen, Acting ChairA. K. McCabe, Vice Chair, HV StandardsJ. C. Scott, Vice Chair, LV Standards
22、D. L. Swindler, Vice Chair, IEC ActivitiesN. Ahmad, Co-SecretaryJ. Collins, Co-SecretaryOrganization Represented Name of RepresentativeElectric Light & Power Group/Edison Electric Institute E. M. WorlandD. E. GaliciaJ. L. KoepfingerG. J . M artusce lloY. I . M u s aInstitute of Electrical and Electr
23、onics Engineers M. D. SigmonA. DixonJ. M. JerabekT. RoysterJ. WoodD. J. Lemmerman (alt.)R. W. LongNational Electrical Manufacturers Association G. SakatsG. T. Jo nesR. W. LongT. W. OlsenD. L. StoneTesting Laboratory (Safety) Group P. J. Notarian E. RoseenTennessee Valley Authority D. N. ReynoldsAsso
24、ciation of Iron & Steel Engineers (vacant)International Electrical Testing Association (NETA) A. PetersonU.S. Department of Agriculture H. BowlesU.S. Department of the ArmyOffice of the Chief of Engineers J. A. GilsonU. S. Department of the NavyNaval Construction Battalion Center D. MillsWestern Are
25、a Power Administration (vacant)National Electric Contractors Association D. HarwoodTechnical Liaison (nonvoting) W. E. LaubachC. L. Wagnervi Copyright 2003 IEEE. All rights reserved.At the time this amendment was approved, the working group has the following membership:R. W. Alexander, ChairThe foll
26、owing members of the balloting committee voted on this amendment. Balloters may have voted forapproval, disapproval, or abstention.When the IEEE-SA Standards Board approved this amendment on 12 May 2003, it had the followingmembership:Don Wright, ChairHoward M. Frazier, Vice ChairJudith Gorman, Secr
27、etary*Member EmeritusR. BehlS. BillingsA. BosmaJ. BrunkeP. DiLilloR. DotsonD. DufournetT. FieldD. L. GaliciaR. GarzonM. T. GlinkowskiK. I. GrayC. Hampe H. HirzL. HollomanR. JacksonR. JeanjeanS. R. LambertF. Lo MonacoR. W. LongA. MannarinoM. Mcvey P. MeyerG. F. MontilletR. MooreY. I . M u s aJ. H. Ne
28、lsonR. K. SmithM. SmithR. SunkaraC. L. WagnerR. YorkRoy W. AlexanderW. J. (Bill) BergmanStan BillingsAnne BosmaLyne BrissonJohn BrunkeTed BurseCarlos L. Cabrera-RuedaGuru Dutt DhingraDufournet DenisAlexander DixonDoug EdwardsRuben D. GarzonHarry GianakourosKeith I. GrayRandall C. GrovesJohn E. Harde
29、rHarold L. HessEdward HorganRichard JacksonRobert JeanjeanAftab KhanJoseph L. KoepfingerThomas LaRoseStephen R. LambertWard E. LaubachGeorge N. LesterKyaw MyintAntonio MannarinoFortin MarcelNigel P. McQuinGary L. MichelSteven MeinersPeter MeyerDaleep C. MohlaGeorges F. MontilletYasin I. MusaJeffrey
30、H. NelsonMiklos J. OroszTed W. OlsenHugh C. RossJoseph RostronJames RuggieriE. William SchmunkDevki SharmaDavid SingletonR. Kirkland SmithDavid T. StoneRao SunkaraStanton H. TelanderNorbert TrappMichael WactorCharles L. WagnerJeffrey WilliamsJames W. WilsonLarry YonceRichard YorkJanusz ZawadzkiH. St
31、ephen BergerJoseph A.BruderBob DavisRichard DeBlasioJulian Forster*Toshio FukudaArnold M. GreenspanRaymond HapemanDonald N. HeirmanLaura HitchcockRichard H. HulettAnant Kumar JainLowell G. JohnsonJoseph L. Koepfinger*Thomas J. McGeanSteve M. MillsDaleep C. MohlaWilliam J. MoylanPaul NikolichGary S.
32、RobinsonMalcolm V. ThadenGeoffrey O. ThompsonDoug ToppingHoward L. WolfmanCopyright 2003 IEEE. All rights reserved. viiAlso included are the following nonvoting IEEE-SA Standards Board liaisons:Alan Cookson, NIST RepresentativeSatish K. Aggarwal, NRC RepresentativeSavoula AmanatidisIEEE Standards Ma
33、naging EditorCopyright 2003 IEEE. All rights reserved. viiiContents3. Definitions . 15. Ratings . 25.11 Rated capacitance switching currents 25.11.1 Rated line-charging breaking current (Il). 35.11.2 Rated cable-charging breaking current (IC). 35.11.3 Rated single capacitor bank breaking current (Is
34、b) 35.11.4 Rated back-to-back capacitor bank breaking current (Ibb) 35.11.5 Rated back-to-back capacitor bank inrush making current (Ibi) 35.11.6 Rated back-to-back capacitor bank inrush making frequency (fbi ). 3Copyright 2003 IEEE. All rights reserved. 1IEEE Standard Rating Structure for AC High-V
35、oltage Circuit Breakers Rated on a Symmetrical Current BasisAmendment 1: Capacitance Current SwitchingNOTE: The editing instructions contained in this amendment define how to merge the material contained herein into theexisting base standard and its amendments to form the comprehensive standard.The
36、editing instructions are shown in bold italic. Four editing instructions are used: change, delete, insert, and replace.Change is used to make small corrections in existing text or tables. The editing instruction specifies the location of thechange and describes what is being changed by using striket
37、hrough (to remove old material) and underscore (to add newmaterial). Delete removes existing material. Insert adds new material without disturbing the existing material. Insertionsmay require renumbering. If so, renumbering instructions are given in the editing instruction. Replace is used to makela
38、rge changes in existing text, subclauses, tables, or figures by removing existing material and replacing it with newmaterial. Editorial notes will not be carried over into future editions because the changes will be incorporated into thebase standard.3. DefinitionsReplace the text in Clause 3 with t
39、he following:For this standard, the following terms and definitions apply. These definitions are not intended to embraceall possible meanings of the terms. They are intended solely to establish the meanings of terms used inpower switchgear. IEEE Std C37.100-1992 should be referenced for terms not de
40、fined in this clause.3.1 cable-charging (cable off-load) breaking capacity: Breaking capacity for which the specified condi-tions of use and behavior include the opening of an insulated cable operating at no-load.3.2 capacitor bank breaking capacity: Breaking capacity for which the specified conditi
41、ons of use andbehavior include the opening of a capacitor bank.3.3 capacitor bank inrush making capacity: Making capacity for which the specified conditions of useand behavior include closing into a capacitor bank.3.4 circuit breaker class C1: Circuit breaker with low probability of restrike during
42、capacitive currentbreaking as demonstrated by specific design tests.IEEEStd C37.04a-2003 IEEE STANDARD RATING FOR AC HIGH-VOLTAGE CIRCUIT BREAKERS RATED ON A2 Copyright 2003 IEEE. All rights reserved.3.5 circuit breaker class C2: Circuit breaker with very low probability of restrike during capacitiv
43、e currentbreaking as demonstrated by specific design tests.3.6 line-charging (line off-load) breaking capacity: Breaking capacity for which the specified conditionsof use and behavior include the opening of an overhead line operating at no-load.3.7 restrike performance: Expected probability of restr
44、ike during capacitance current interruption as dem-onstrated by specified design tests.NOTESpecific numeric probabilities cannot be applied throughout a circuit breakers service life.5. RatingsReplace 5.11 with the following text:5.11 Rated capacitance switching currentsCapacitance switching current
45、s may include part or all of the operating duty of a circuit breaker, such as thecharging current of an unloaded transmission line or cable or the load current of a shunt capacitor bank.The rating of a circuit breaker for capacitance current switching shall include, where applicable,a) Rated line-ch
46、arging breaking current applicable to all outdoor circuit breakersb) Rated cable-charging breaking current applicable to all indoor circuit breakersc) Rated single capacitor bank breaking currentd) Rated back-to-back capacitor bank breaking currente) Rated back-to-back capacitor bank inrush making c
47、urrent and frequencyPreferred values of rated capacitance switching currents are given in Table 1A, Table 2A, and Table 3A ofANSI C37.06-2000.The recovery voltage related to capacitance current switching depends on The grounding of the system The grounding of the capacitive load, e.g., shielded cabl
48、e, capacitor bank, transmission line The mutual influence of adjacent phases of the capacitive load, e.g., belted cables, open air lines The mutual influence of adjacent systems of overhead lines on the same route The presence of single- or two-phase ground faultsTwo classes of circuit breakers are
49、defined according to their restrike performances: Class C1: low probability of restrike during capacitance current breaking Class C2: very low probability of restrike during capacitance current breakingEach capacitance current switching rating assigned see item a) through item d) in this subclause must havean associated class (i.e., C1 or C2) with it.NOTES1The probability is related to the performance during the series of type tests stated in 4.10 in IEEE PC37.09a and sub-sequently in 4.10.1 through 4.10.12.IEEESYMMETRICAL CURRENT BASISAM
