1、IEEE Guide for Dry-Type Transformer Through-Fault Current DurationIEEE Std C57.12.59-2015(Revision of IEEE Std C57.12.59-2001)IEEE Power and Energy SocietySponsored by the Transformers CommitteeIEEE3 Park AvenueNew York, NY 10016-5997USAIEEE Std C57.12.59-2015(Revision of IEEE Std C57.12.59-2001)IEE
2、E Guide for Dry-Type Transformer Through-Fault Current DurationSponsor Transformers Committee IEEE Power and Energy SocietyApproved 3 September 2015IEEE-SA Standards BoardAbstract: Recommendations believed essential for the application of overcurrent protective devic-es that limit the exposure time
3、of dry-type transformers to short-circuit currents are set forth in this guide. This guide is not intended to imply overload capability.Keywords: dry-type transformers, fault current, IEEE C57.12.59, mechanical damage, mechanical duty, normal base current, short-circuit current, short-circuit impeda
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33、 own responsibility. Further information may be obtained from the IEEE Standards Association.6Copyright 2015 IEEE. All rights reserved.ParticipantsAt the time this IEEE guide was completed, the DC Circuit Breaker Working Group had the following membership:Paulette Payne Powell, ChairBipin Patel, Vic
34、e ChairTimothy Holdway Charles Johnson Richard MarekThe following members of the individual balloting committee voted on this guide. Balloters may have voted for approval, disapproval, or abstention.Samuel AguirreI. AntweilerDonald AyersRobert BallardBarry BeasterSteven BeznerWallace BinderThomas Bi
35、shopThomas BlackburnWilliam BloetheCarl BushThomas CallsenPaul CardinalSuresh ChannarasappaJohn CrouseRay DavisDieter DohnalGary DonnerDonald DunnJorge Fernandez DaherJoseph FoldiMarcel FortinDerek FosterRobert GanserCarlos GaytanFrank GerleveDavid GilmerJalal GohariEdwin GoodwinRandall GrovesAjit G
36、walMichael HaasTimothy HoldwayJill HolmesPhilip HopkinsonMohammad ImanRichard JacksonCharles JohnsonLaszlo KadarSheldon KennedyYuri KhersonskyJim KulchiskyMarc LacroixChung-Yiu LamAleksandr LevinRichard MarekJohn MillerDaniel MulkeyJerry MurphyK. R. M. NairMartin NavarroMichael NewmanRaymond Nichola
37、sMirko PalazzoKlaus PappBansi PatelWesley PattersonPaulette Payne PowellBranimir PetosicChristopher PetrolaAlvaro PortilloLewis PowellIulian ProfirMichael RobertsCharles RogersJoseph RostronThomas RozekBartien SayogoJerry SmithDavid StankesKerwin StretchDavid TepenJames ThompsonJohn VergisKenneth Wh
38、iteJennifer YuJian Yu7Copyright 2015 IEEE. All rights reserved.When the IEEE-SA Standards Board approved this guide on 3 September 2015, it had the following membership:John D. Kulick, ChairJon Walter Rosdahl, Vice ChairRichard H. Hulett, Past ChairKonstantinos Karachalios, SecretaryMasayuki Ariyosh
39、iTed BurseStephen DukesJean-Philippe FaureJ. Travis Griffi thGary HoffmanMichael JanezicJoseph L. Keopfi nger*David LawHung LingAndrew MylesT. W. OlsenGlenn ParsonsRonald C. PetersenAnnette D. ReillyStephen J. ShellhammerAdrian P. StephensYatin TrivediPhilip WinstonDon WrightYu YuanDaidi Zhong*Membe
40、r Emeritus8Copyright 2015 IEEE. All rights reserved.IntroductionThis introduction is not part of IEEE Std C57.12.59-2015, IEEE Guide for Dry-Type Transformer Through-Fault Current Duration.This guide provides recommendations for the application of overcurrent protection devices to limit the expo-sur
41、e time of dry-type transformers to short circuits. It shall not be confused with IEEE Std C57.109, IEEE Guide for Liquid-Immersed Transformer Through-Fault Current Duration, which applies only to liquid-im-mersed transformers.Dry-type transformers differ significantly from liquid-immersed types in s
42、everal respects:a) There are significant variations in dry-type winding constructions, including conventional varnish im-pregnated layered windings, vertically stacked varnish-impregnated disk windings, solid cast wind-ings, and combinations thereof, all of which have different transient heating cha
43、racteristics during time intervals greater than about 100 s.b) The transient heating of liquid-immersed transformer windings is considerably buffered by the insu-lating medium in which the windings are immersed, providing a relatively long thermal time constant as compared to dry-type transformers.B
44、ecause of the foregoing, the through-fault protection curves for dry-type transformers are limited to overload time intervals of 100 s or less. No one curve for longer time intervals would characterize the thermal perfor-mance of all the different dry-type transformer constructions and temperature r
45、atings. Moreover, such curves are not known or, at least, not available. Consequently, the curves in this guide pertain to the temperature rise of the windings during time intervals less than 100 s, wherein nearly all the heat generated is stored in the conductors. For longer time intervals, it is r
46、ecommended that reference be made to IEEE Std C57.96 B1, IEEE Guide for Loading Dry-Type Distribution and Power Transformers.As short-circuit time intervals become progressively less than 100 s, mechanical considerations become more important than thermal characteristics.Short-circuit performance ch
47、aracteristics are contained in IEEE Std C57.12.01. This guide supplements that information, but in no way supersedes it.The substantive revisions of this guide include expansion of the scope to include Category III transformers. The basis for the equations and the thermal and mechanical damage curve
48、s of Figure 1, Figure 2, and Fig-ure 3 were developed and are detailed in Annex A. Figure 2a was corrected for consistency with the details of Annex A.9Copyright 2015 IEEE. All rights reserved.Contents1. Overview . 101.1 Scope 101.2 Purpose . 101.3 General . 102. Normative references 113. Definition
49、s . 114. Transformer coordination 114.1 General transformer coordination . 114.2 Category I transformers 134.3 Category III transformers . 14Annex A (informative) Basis for through-fault protection 16Annex B (informative) Bibliography . 1910Copyright 2015 IEEE. All rights reserved.IMPORTANT NOTICE: IEEE Standards documents are not intended to ensure safety, security, health, or environmental protection, or ensure against interference with or from other devices or networks. Imple-menters of IEEE Standards documents are responsible for determining and complying with all
