1、IEEE Guide for Low-Voltage AC (635 V and below) Power Circuit Breakers Applied with Separately-Mounted Current-Limiting FusesIEEE Std C37.27-2015(Revision of IEEE Std C37.27-2008)IEEE Power and Energy SocietySponsored by the Switchgear CommitteeIEEE3 Park AvenueNew York, NY 10016-5997USAIEEE Std C37
2、.27-2015(Revision of IEEE Std C37.27-2008)IEEE Guide for Low-Voltage AC (635 V and below) Power Circuit Breakers Applied with Separately-Mounted Current-Limiting FusesSponsor Switchgear Committee of the IEEE Power and Energy SocietyApproved 5 December 2015IEEE-SA Standards BoardAbstract: Application
3、 recommendations to assist in selection of separately mounted current-lim-iting fuses to be installed in series with low-voltage ac power circuit breakers are provided in this guide.Keywords: circuit breaker, current-limiting fuse, IEEE C37.27, low-voltage ac power circuit breaker, open-fuse trip de
4、viceThe Institute of Electrical and Electronics Engineers, Inc.3 Park Avenue, New York, NY 10016-5997, USACopyright 2016 by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 18 March 2016. Printed in the United States of America.IEEE is a registered trademark
5、 in the U.S. Patent fitness for a particular purpose; non-infringement; and quality, accuracy, effectiveness, currency, or completeness of material. In addition, IEEE disclaims any and all conditions relating to: results; and workmanlike effort. IEEE standards documents are supplied “AS IS” and “WIT
6、H ALL FAULTS.”Use of an IEEE standard is wholly voluntary. The existence of an IEEE standard does not imply that there are no other ways to produce, test, measure, purchase, market, or provide other goods and services related to the scope of the IEEE standard. Furthermore, the viewpoint expressed at
7、 the time a standard is approved and issued is subject to change brought about through developments in the state of the art and comments received from users of the standard.In publishing and making its standards available, IEEE is not suggesting or rendering professional or other services for, or on
8、 behalf of, any person or entity nor is IEEE undertaking to perform any duty owed by any other person or entity to another. Any person utilizing any IEEE Standards document, should rely upon his or her own independent judgment in the exercise of reasonable care in any given circumstances or, as appr
9、opri-ate, seek the advice of a competent professional in determining the appropriateness of a given IEEE standard.IN NO EVENT SHALL IEEE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO: PROCURE-MENT OF SUBSTITUTE GOODS OR SE
10、RVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CON-TRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE PUBLICATION, USE OF, OR RELIANCE UPON ANY STANDARD, EVEN IF ADVISED OF THE
11、 POSSIBILITY OF SUCH DAMAGE AND REGARDLESS OF WHETHER SUCH DAMAGE WAS FORESEEABLE.TranslationsThe IEEE consensus development process involves the review of documents in English only. In the event that an IEEE standard is translated, only the English version published by IEEE should be considered the
12、 approved IEEE standard.Official statementsA statement, written or oral, that is not processed in accordance with the IEEE-SA Standards Board Operations Manual shall not be considered or inferred to be the official position of IEEE or any of its committees and shall not be considered to be, or be re
13、lied upon as, a formal position of IEEE. At lectures, symposia, seminars, or educational courses, an individual presenting information on IEEE standards shall make it clear that his or her views should be considered the personal views of that individual rather than the formal position of IEEE.Commen
14、ts on standardsComments for revision of IEEE Standards documents are welcome from any interested party, regardless of membership affiliation with IEEE. However, IEEE does not provide consulting information or advice pertain-ing to IEEE Standards documents. Suggestions for changes in documents should
15、 be in the form of a proposed change of text, together with appropriate supporting comments. Since IEEE standards represent a consensus of concerned interests, it is important that any responses to comments and questions also receive the concur-rence of a balance of interests. For this reason, IEEE
16、and the members of its societies and Standards Coordi-nating Committees are not able to provide an instant response to comments or questions except in those cases where the matter has previously been addressed. For the same reason, IEEE does not respond to interpretation requests. Any person who wou
17、ld like to participate in revisions to an IEEE standard is welcome to join the relevant IEEE working group.Comments on standards should be submitted to the following address:Secretary, IEEE-SA Standards Board445 Hoes LanePiscataway, NJ 08854 USALaws and regulationsUsers of IEEE Standards documents s
18、hould consult all applicable laws and regulations. Compliance with the provisions of any IEEE Standards document does not imply compliance to any applicable regulatory require-ments. Implementers of the standard are responsible for observing or referring to the applicable regulatory requirements. IE
19、EE does not, by the publication of its standards, intend to urge action that is not in compliance with applicable laws, and these documents may not be construed as doing so.CopyrightsIEEE draft and approved standards are copyrighted by IEEE under U.S. and international copyright laws. They are made
20、available by IEEE and are adopted for a wide variety of both public and private uses. These include both use, by reference, in laws and regulations, and use in private self-regulation, standardization, and the promotion of engineering practices and methods. By making these documents available for us
21、e and adop-tion by public authorities and private users, IEEE does not waive any rights in copyright to the documents.PhotocopiesSubject to payment of the appropriate fee, IEEE will grant users a limited, non-exclusive license to photocopy portions of any individual standard for company or organizat
22、ional internal use or individual, non-commercial use only. To arrange for payment of licensing fees, please contact Copyright Clearance Center, Customer Ser-vice, 222 Rosewood Drive, Danvers, MA 01923 USA; +1 978 750 8400. Permission to photocopy portions of any individual standard for educational c
23、lassroom use can also be obtained through the Copyright Clearance Center.Updating of IEEE Standards documentsUsers of IEEE Standards 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 o
24、f amendments, corri-genda, or errata. An official IEEE document at any point in time consists of the current edition of the document together with any amendments, corrigenda, or errata then in effect.Every IEEE standard is subjected to review at least every ten years. When a document is more than te
25、n years old and has not undergone a revision process, it is reasonable to conclude that its contents, although still of some value, do not wholly reflect the present state of the art. Users are cautioned to check to determine that they have the latest edition of any IEEE standard.In order to determi
26、ne 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:/ieeexplore.ieee.org/xpl/standards.jsp or contact IEEE at the address listed previously. For more information about the IEEE
27、-SA or IEEEs standards development process, visit the IEEE-SA Website at http:/standards.ieee.org.ErrataErrata, if any, for all IEEE standards can be accessed on the IEEE-SA Website at the following URL: http:/standards.ieee.org/findstds/errata/index.html. Users are encouraged to check this URL for
28、errata periodically.PatentsAttention is called to the possibility that implementation of this standard may require use of subject matter covered by patent 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 conne
29、ction therewith. If a patent holder or patent applicant has filed a statement of assurance via an Accepted Letter of Assurance, then the statement is listed on the IEEE-SA Website at http:/standards.ieee.org/about/sasb/patcom/patents.html. Letters of Assurance may indicate whether the Submitter is w
30、illing or unwilling to grant licenses under patent rights without compensation or under reasonable rates, with reasonable terms and conditions that are demonstrably free of any unfair discrim-ination to applicants desiring to obtain such licenses.Essential Patent Claims may exist for which a Letter
31、of Assurance has not been received. The IEEE is not re-sponsible for identifying Essential Patent Claims for which a license may be required, for conducting inquiries into the legal validity or scope of Patents Claims, or determining whether any licensing terms or conditions provided in connection w
32、ith submission of a Letter of Assurance, if any, or in any licensing agreements are reasonable or non-discriminatory. Users of this standard are expressly advised that determination of the valid-ity of any patent rights, and the risk of infringement of such rights, is entirely their own responsibili
33、ty. Further information may be obtained from the IEEE Standards Association.6Copyright 2016 IEEE. All rights reserved.ParticipantsAt the time this IEEE guide was completed, the C37.27 Working Group had the following membership:Keith Flowers, ChairClint CarneDavid DunneThomas HawkinsHarry JostenJohn
34、KaminskiCharles A. MorseDarryl MoserT. W. OlsenPaul SullivanThe following members of the individual balloting committee voted on this guide. Balloters may have voted for approval, disapproval, or abstention.Thomas BarnesRobert BeaversWilliam BloetheTed BurseThomas CallsenPaul CardinalGlenn DavisGary
35、 DonnerJerry EarlDouglas J EdwardsKeith FlowersFrank GerleveDavid GilmerMietek GlinkowskiLou GrahorRandall GrovesAjit GwalThomas HawkinsJeffrey HelzerJeffrey HidakaDan HrncirRichard JacksonAnurag JivananiHarry JostenYuri KhersonskyBoris KoganJim KulchiskyEd LarsenFrank MayleJeffery MizenerCharles A.
36、 MorseDarryl MoserJerry MurphyDennis NeitzelMichael NewmanT. W. OlsenLorraine PaddenShawn PattersonChristopher PetrolaIulian ProfirMichael RobertsTimothy RobirdsCharles RogersTim RohrerThomas RozekSteven SanoBartien SayogoMichael SigmonJeremy SmithJerry SmithWayne StecPaul SullivanDavid TepenJames V
37、an De LigtJohn VergisLarry YonceJian YuWhen the IEEE-SA Standards Board approved this guide on 5 December 2015, it had the following membership:John D. Kulick, ChairJon Walter Rosdahl, Vice ChairRichard H. Hulett, Past ChairKonstantinos Karachalios, SecretaryMasayuki AriyoshiTed BurseStephen DukesJe
38、an-Philippe FaureJ. Travis GriffithGary HoffmanMichael JanezicJoseph L. Koepfinger*David J. LawHung LingAndrew MylesT. W. OlsenGlenn ParsonsRonald C. PetersenAnnette D. ReillyStephen J. ShellhammerAdrian P. StephensYatin TrivediPhillip WinstonDon WrightYu YuanDaidi Zhong*Member Emeritus7Copyright 20
39、16 IEEE. All rights reserved.IntroductionThis introduction is not part of IEEE Std C37.27-2015, IEEE Guide for Low-Voltage AC (635 V and below) Power Circuit Breakers Applied with Separately-Mounted Current-Limiting Fuses.IEEE Std C37.27-2008 revised IEEE Std C37.27-1987 to address the following iss
40、ues:a) Modification of all dimensional information to provide metric dimensions,b) General revision for harmonization with related standards,c) General revision for current products and applications including details associated with electronic and electromechanical trip devices, andd) Clarification
41、of the differences between low-voltage nonintegrally fused circuit breakers (covered by IEEE Std C37.13)1and low-voltage ac power circuit breakers with separately mounted fuses.Nonintegrally fused circuit breaker construction is not the same as separately mounted fuses construction. The previous tit
42、le of IEEE Std C37.27-1987 included the reference to nonintegrally fused power circuit breakers. This reference is removed from the 2008 revision and only the reference to separately mounted fuses is used to clarify this construction difference and the applicability of this guide only to low-voltage
43、 AC power circuit breaker using separately mounted current-limiting fuses.While this document is intended as a guide for application of fuses in low-voltage ac power circuit break-ers with separately mounted current-limiting fuses, the guide may also be useful as an application guide for low-voltage
44、 integrally or nonintegrally fused power circuit breakers.The present revision updates the references to preferred ratings from IEEE Std C37.16, which will be with-drawn when IEEE Std C37.13 and IEEE Std C37.14 revisions have been completed to incorporate the infor-mation previously included within
45、IEEE Std C37.16.1Information of references can be found in Clause 2.8Copyright 2016 IEEE. All rights reserved.Contents1. Overview . 91.1 Scope 91.2 Purpose . 92. Normative references 103. Definitions . 104. General 115. Coordination of circuit breaker and fuse . 125.1 Maximum fuse rating to be used
46、. 125.2 Minimum fuse rating to be used 146. Location of fuses . 167. Open-fuse trip devices . 178. Addition or substitution of fuses in existing installations 179. Protection of connected equipment . 1710. Tested combinations of circuit breakers and fuses . 17Annex A (informative) Bibliography 189Co
47、pyright 2016 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 det
48、ermining and complying with all 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
49、all publications containing 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. Overview1.1 ScopeThis guide applies to unfused low-voltage ac power circuit breakers of the 635 V maximum voltage class with separately-mounted current-limiting fuses for use on ac circuits with available short-circuit currents of 200 000 A (rms symmetrical) or less. Low-voltage ac fused power circuit br
