1、Published by theInstitute of Electrical and Electronics Engineers, Inc.1 0 1 5IEE Recomended Practice forApplying LowVoltage Circ u i tB reakers Used inIndustrial andC o m m e rcial PowerS y s t e m sIEEE Std 1015-2006(Revision ofIEEE Std 1015-1997)Recognized as anAmerican National Standard (ANSI)IE
2、EE Std 1015-2006(Revision ofIEEE Std 1015-1997)IEEE Recommended Practice for Applying Low-Voltage Circuit Breakers Used in Industrial and Commercial Power SystemsSponsor Power Systems Protection Committeeof theIEEE Industry Applications SocietyApproved 5 September 2006American National Standards Ins
3、tituteApproved 30 March 2006IEEE-SA Standards BoardThe Institute of Electrical and Electronics Engineers, Inc.3 Park Avenue, New York, NY 10016-5997, USACopyright 2006 by the Institute of Electrical and Electronics Engineers, Inc.All rights reserved. Published 29 September 2006. Printed in the Unite
4、d States of America.IEEE is a registered trademark in the U.S. Patent +1 978 750 8400. Permission to photocopy portions ofany individual standard for educational classroom use can also be obtained through the Copyright ClearanceCenter.iv Copyright 2006 IEEE. All rights reserved.IntroductionThis intr
5、oduction provides an engineer a comprehensive reference source to aid indeciding what type of low-voltage circuit breaker to use for a particular application, andhow to apply the circuit breaker. This recommended practice includes a comparisonbetween the standards of low-voltage power circuit breake
6、rs and molded-case circuitbreakers so that an engineer can make better, more informed choices. Pertinent tables havebeen extracted from other standards to provide the basis for the selection and applicationguidelines. In addition, specific application examples are provided.Notice to usersErrataErrat
7、a, if any, for this and all other standards can be accessed at the following URL: http/standards.ieee.org/reading/ieee/updates/errata/index.html. Users are encouraged to checkthis URL for errata periodically.InterpretationsCurrent interpretations can be accessed at the following URL: http:/standards
8、.ieee.org/reading/ieee/interp/index.html.PatentsAttention is called to the possibility that implementation of this standard may require useof subject matter covered by patent rights. By publication of this standard, no position istaken with respect to the existence or validity of any patent rights i
9、n connection therewith.The IEEE shall not be responsible for identifying patents or patent applications for whicha license may be required to implement an IEEE standard or for conducting inquiries intothe legal validity or scope of those patents that are brought to its attention.This introduction is
10、 not part of IEEE Std 1015-2006, IEEE Recommended Practice for ApplyingLow-Voltage Circuit Breakers Used in Industrial and Commercial Power Systems.Copyright 2006 IEEE. All rights reserved. vParticipantsThe Blue Book Working Group for the 2006 edition had the following membership: Donald H. McCullou
11、gh II, ChairChapter 1: OverviewDonald H. McCullough, II, ChairChapter 2: Definitions, acronyms, and abbreviationsDonald H. McCullough, II, ChairChapter 3: Rating and testingRaymond D. Valentine, ChairRay M. Clark, Vincent Saporita, Clive Kimblin, George D. GregoryChapter 4: Specific applicationsJame
12、s W. Brosnahan, Co-ChairShaun P. Slattery*, Co-ChairRay M. Clark, Donald Colaberardino, Keith Cooper, George D.Gregory, David Roybal, Vincent Saporita, M. Stansbury, Raymond D.Valentine, Ralph YoungChapter 5: Selective coordination of low-voltage circuit breakers with otherprotective devicesLorraine
13、 Padden, ChairJay Fischer, Vincent SaporitaChapter 6: Fused and special-purpose circuit breakersGeorge D. Gregory, Co-Chair Ray M. Clark, Co-Chair Bruce G. Bailey, Donald H. McCullough, IIChapter 7: Acceptance and maintenance requirementsDonald H. McCullough, II, Chair Dan Neeser, George D. GregoryG
14、rateful appreciation and thanks is made to the following individuals for their support inthe preparation of this standard:This recommended practice is dedicated in memory of Shaun Slattery. The WorkingGroup especially acknowledges his contributions to the original development of thisrecommended prac
15、tice and his valuable insight into the material contained within thisrevision.Ruth Whitaker William J. Morgan, IIvi Copyright 2006 IEEE. All rights reserved.Historical ParticipantsSince the initial publication, many IEEE standards have added functionality or providedupdates to material included in t
16、his recommended practice. The following is a historicallist of participants who have dedicated their valuable time, energy, and knowledge to thecreation of this material:The following members of the individual balloting committee voted on this recommendedpractice. Balloters may have voted for approv
17、al, disapproval, or abstention. Jack AlacchiJoseph J. AndrewsDavid S. BakerBruce G. BaileyJames W. BroshnahanKenneth W. CarrickRene d. CatenschioldRay M. ClarkKieth R. CooperJay FischerGeorge D. GregoryWilliam M. HallWalter HueningL. Guy JacksonEd LarsenDaniel J. LoveBill MayDonald H. McCullough, II
18、Russel OhlsonAlan C. PierceBill ReardonVincent SaporitaDean SigmonRobert SimpsonShaun P. SlatteryRaymond D. ValentineRaymond O. D. WhittRalph YoungBruce G. BaileyR. W. BeckerEnrique BetancourtThomas BlairMichael BrimsekJames W. BrosnahanThomas BlairDonald ColaberardinoStephen P ConradJames M. DaleyS
19、tephen DareByron DavenportGuru Dutt DhingraAmir El-SheikhDan EvansJay FischerH. Landis FloydCarl FredericksEdgar GalyonDonner GaryRandall GrovesErich GuntherPaul HamerAdrienne HendricksonDouglas HopkinsRonald HotchkissRobert InghamDavid JacksonL. Guy JacksonJoseph JancauskasClive KimblinYuri Kherson
20、skyRoyce KingE. Kramer Steven LarsonTimothy LensmireBlane LeuschnerJason LinMichael LowensteinAllan LudbrookGregory LuriKeith MalmedalDonald H. McCullough, IIJohn MerandoJames MichalecGary MichelT. David MillsJames MitchemCharles MorseDan NeeserArthur NeubauerT. W. OlsenLorraine PaddenPrafulla Pilla
21、iPercy PoolBrian RenerJames RuggieriMelvin SandersVincent SaporitaRobert SchuergerRobert SeitzShaun SlatteryRobert Smith, Jr.James StonerJane Ann VernerDonald W. ZipseCopyright 2006 IEEE. All rights reserved. viiWhen the IEEE-SA Standards Board approved this recommended practice on 30 March2006, it
22、had the following membership:Steve M. Mills, ChairRichard H. Hulett, Vice ChairDon Wright, Past ChairJudith Gorman, Secretary*Member EmeritusAlso included are the following nonvoting IEEE-SA Standards Board liaisons:Satish K. Aggarwal, NRC RepresentativeRichard DeBlasio, DOE RepresentativeAlan H. Co
23、okson, NIST RepresentativeMichelle D. TurnerIEEE Standards Program Manager, Document DevelopmentMatthew CegliaIEEE Standards Program Manager, Technical Program DevelopmentPatricia GerdonIEEE Standards Program Administrator Manager, Technical Program DevelopmentMark D. BowmanDennis B. BrophyWilliam R
24、. GoldbachArnold M. GreenspanRobert M. GrowJoanna N. GueninJulian Forster*Mark S. HalpinKenneth S. HanusWilliam B. HopfJoseph L. Koepfinger*David J. LawDaleep C. MohlaT. W. OlsenGlenn ParsonsRonald C. PetersonTom A. PrevostGreg RattaRobby RobsonAnne-Marie SahazizianVirginia C. SulzbergerMalcolm V. T
25、hadenRichard L. TownsendWalter WeigelHoward L. Wolfmanviii Copyright 2006 IEEE. All rights reserved.CONTENTSChapter 1Overview. 11.1 Scope11.2 Two classifications of breakers11.3 Description of a molded-case circuit breaker 21.4 Description of a low-voltage power circuit breaker 31.5 Document organiz
26、ation61.6 Summary81.7 Normative references.81.8 Bibliography 9Chapter 2Definitions, acronyms, and abbreviations. 112.1 Definitions .112.2 Acronyms and abbreviations .172.3 Normative references.182.4 Bibliography 18Chapter 3Rating and testing .193.1 Relevance of rating and testing193.2 The ideal circ
27、uit breaker 193.3 The practical circuit breaker 193.4 Basic circuit-breaker selection criteria 203.5 The role of industry standards .203.6 The role of safety and industry codes 213.7 Comparison of testing requirements 213.8 Circuit-breaker classes and types.223.9 Generalized application consideratio
28、ns .233.10 References on rating and application.233.11 Endurance considerations 243.12 Circuit-breaker voltage rating considerations283.13 Frequency rating and considerations .303.14 Temperature considerations.313.15 Enclosure considerations .323.16 Cable, wire, and conductor considerations 343.17 D
29、e-rating for ambient temperature 383.18 Circuit-breaker humidity limitations .393.19 Circuit-breaker altitude limitations403.20 Circuit-breaker ampere rating413.21 National Electrical Code considerations413.22 Preferred current ratings 423.23 Load effects493.24 The effect of nonlinear loads on circu
30、it breakers 493.25 The effect of high inrush loads 50Copyright 2006 IEEE. All rights reserved. ix3.26 Overload testing of circuit breakers.503.27 Forced-air cooling of LVPCBs 553.28 Short-circuit interrupting rating .553.29 Fault-current calculation considerations573.30 Circuit-breaker interrupting
31、ratings .573.31 Single-pole fault interruption testing .583.32 Circuit-breaker evaluation in standards for testing583.33 Blow-open contact arms 653.34 Circuit breaker useful life 653.35 Considerations on interrupting duty and maintenance 663.36 Integrally fused devices .663.37 Series-connected ratin
32、g673.38 Cascade arrangement .683.39 Short-time rating 683.40 Circuit-breaker evaluation for X/R ratio or short-circuit power factor .693.41 Single-pole interrupting capability and power system design considerations.703.42 Applying ac thermal-magnetic molded-case circuit breakers usingtheir UL 489 dc
33、 rating 733.43 Normative references.763.44 Bibliography 77Chapter 4Specific applications .794.1 Scope794.2 Selection considerations 794.3 Selection approach for application requirements.804.4 Selection approach for electrical ratings804.5 Modifications and accessories for specific applications954.6
34、Normal versus abnormal conditions 984.7 Considerations for applying MCCBs, ICCBs, and LVPCBs.994.8 Service requirements and protection1004.9 Main circuit breakers .1004.10 Tie circuit breakers 1024.11 Feeder protection .1034.12 Normative references.1324.13 Bibliography 133Chapter 5Selective coordina
35、tion of low-voltage circuit breakers with other protective devices .1355.1 Introduction1355.2 Low-voltage power circuit breakers 1355.3 Low-voltage MCCBs and ICCBs 1395.4 Other coordinating devices 1405.5 Coordination examples 1425.6 Normative references.1545.7 Bibliography 155x Copyright 2006 IEEE.
36、 All rights reserved.Chapter 6Fused and special-purpose circuit breakers 1576.1 Introduction1576.2 Instantaneous-trip circuit breakers.1576.3 Mine-duty circuit breakers.1606.4 Current-limiting circuit breakers .1626.5 Molded-case switches 1646.6 Fused circuit breakers 1656.7 Circuit breaker and grou
37、nd-fault circuit interrupter 1666.8 Arc-fault circuit interrupter1676.9 Supplementary protectors 1686.10 Normative references.1696.11 Bibliography 170Chapter 7Acceptance and maintenance requirements 1717.1 Scope1717.2 Maintenance program 1717.3 Maintenance of MCCBs 1737.4 Maintenance of LVPCBs .1757
38、.5 Maintenance and testing of ICCBs 1767.6 Maintenance and testing of molded-case switches 1767.7 Maintenance of ground-fault circuit interrupters (GFCIs) 1767.8 Documenting maintenance results .1777.9 Testing program.1777.10 Failures detected 1857.11 Normative references.1857.12 Bibliography 187Ann
39、ex 7A (informative) MCCB data record .188Annex 7B (informative) LVPCB data record 194Copyright 2006 IEEE. All rights reserved. 1IEEE Recommended Practice for Applying Low-Voltage Circuit Breakers Used in Industrial and Commercial Power SystemsChapter 1Overview1.1 ScopeThis recommended practice provi
40、des information for selecting the proper circuit breakerfor a particular application. This recommended practice helps the application engineerspecify the type of circuit breaker, ratings, trip functions, accessories, acceptance tests,and maintenance requirements. It also discusses circuit breakers f
41、or special applications,e.g., instantaneous only and switches. In addition, it provides information for applyingcircuit breakers at different locations in the power system and for protecting specificcomponents. Guidelines are given for coordinating combinations of line-side and load-side devices. Ac
42、ceptance testing and maintenance guidelines are provided so that reliableoperation can be verified and maintained.This recommended practice does not cover the selection and application of circuitbreakers such as marine circuit breakers and definite purpose circuit breakers.1.2 Two classifications of
43、 breakersThere are two main classifications of low-voltage circuit breakers: molded-case circuitbreakers and low-voltage power circuit breakers. Within the molded-case circuit breakerclassification, there is another type of circuit breaker called the insulated-case circuitbreaker. The construction a
44、nd characteristics of these three types will be discussed.Throughout the balance of this recommended practice, these devices will be referred to asfollows: MCCB: molded-case circuit breaker ICCB: insulated-case circuit breaker LVPCB: low-voltage power circuit breakerEach one of these circuit breaker
45、s has different design characteristics and, in many cases,different application requirements.IEEEStd 1015-2006 CHAPTER 12 Copyright 2006 IEEE. All rights reserved.This recommended practice compares the different types of circuit breakers so that thepower systems engineer can decide which one is best
46、 suited for a particular application. Inaddition, it discusses ratings, such as overload, short-time, and interrupting capabilities.Protection requirements depend on the circuit breaker location in the power system as wellas the type of equipment that is being protected. Examples for different types
47、 ofequipment and circuit locations are discussed in this recommended practice.MCCBs are tested and rated in accordance with UL 489-2002.1Their current-carryingparts, mechanisms, and trip devices are completely contained within a molded case ofinsulating material. The cover and base of smaller MCCBs
48、are designed so that theMCCBs cannot be opened for maintenance purposes. The main contacts of MCCBscannot be removed; however, some MCCBs are available with field-installableaccessories. MCCBs are available in stationary or plug-in construction with circuit-breaker enclosures that can be flush or su
49、rface mounted. They are available in a largenumber of continuous-current and interrupting ratings. The smaller continuous-currentratings are equipped with thermal-magnetic or magnetic only trip units. Larger sizes arealso available with thermal-magnetic or electronic (static) trip devices.ICCBs are also tested and rated in accordance with UL 489-2002. As with MCCBs, ICCBcurrent-carrying parts, mechanisms, and trip units are contained within a molded case ofinsulating material. The case is designed so that it can be opened for inspection of contactsand arc chu
