1、C22.2 No. 305-16Molded-case circuit breakers, molded-case switches, and circuit-breaker enclosures for use with photovoltaic (PV) systemsLegal Notice for StandardsCanadian Standards Association (operating as “CSA Group”) develops standards through a consensus standards development process approved b
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18、ument constitutes your acceptance of the terms and conditions of this Legal Notice.Standards Update ServiceC22.2 No. 305-16March 2016Title: Molded-case circuit breakers, molded-case switches, and circuit-breaker enclosures for use with photovoltaic (PV) systemsTo register for e-mail notification abo
19、ut any updates to this publication go to shop.csa.ca click on CSA Update ServiceThe List ID that you will need to register for updates to this publication is 2423744.If you require assistance, please e-mail techsupportcsagroup.org or call 416-747-2233.Visit CSA Groups policy on privacy at www.csagro
20、up.org/legal to find out how we protect your personal information.CSA GroupCSA C22.2 No. 305-16First EditionUnderwriters Laboratories Inc.UL 489BFirst EditionMolded-Case Circuit Breakers, Molded-Case Switches, andCircuit-Breaker Enclosures for Use with Photovoltaic (PV) SystemsMarch 7, 2016ANSI/UL 4
21、89B-2016Commitment for AmendmentsThis standard is issued jointly by the Canadian Standards Association (operating as CSA Group) andUnderwriters Laboratories Inc. (UL). Comments or proposals for revisions on any part of the standardmay be submitted to CSA Group or UL at any time. Revisions to this st
22、andard will be made only afterprocessing according to the standards development procedures of CSA Group and UL. CSA Group andUL will issue revisions to this standard by means of a new edition or revised or additional pages bearingtheir date of issue.ISBN 978-1-77139-953-1 2016 CSA GroupAll rights re
23、served. No part of this publication may be reproduced in any form whatsoever without theprior permission of the publisher.This Standard is subject to review five years from the date of publication, and suggestions for itsimprovement will be referred to the appropriate committee. To submit a proposal
24、 for change, pleasesend the following information to inquirescsagroup.org and include “Proposal for change” in thesubject line: Standard designation (number); relevant clause, table, and/or figure number; wording ofthe proposed change; and rationale for the change.To purchase CSA Group Standards and
25、 related publications, visit CSA Groups Online Store atshop.csa.ca or call toll-free 1-800-463-6727 or 416-747-4044.Copyright 2016 Underwriters Laboratories Inc.ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standardshould be altered in any way. All of ULs
26、 Standards and all copyrights, ownerships, and rights regardingthose Standards shall remain the sole and exclusive property of UL.This ANSI/UL Standard for Safety consists of the First Edition. The most recent designation of ANSI/UL489B as an American National Standard (ANSI) occurred on March 7, 20
27、16. ANSI approval for astandard does not include the Cover Page, Transmittal Pages, Title Page (front and back), or thePreface.Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time.Proposals should be submitted via a Proposal Request in ULs On-Line Collab
28、orative StandardsDevelopment System (CSDS) at http:/.To purchase UL Standards, visit Comm 2000 at http:/m- call toll-free 1-888-853-3503.CONTENTSPREFACE 5ALL DEVICESINTRODUCTION1 Scope .72 Components 73 Units of Measurement .74 Normative References .75 Definitions 8PHOTOVOLTAIC (PV) MOLDED-CASE CIRC
29、UIT BREAKERSCONSTRUCTION6 General 87 Spacings .88 Wire Terminals .8PERFORMANCE9 General .1010 Endurance Test 1211 Temperature Test .1212 100 Percent Calibration at 50C 1213 Limited Fault Interrupting Test 1314 Standard Fault Interrupting Test 1315 Dielectric Voltage-Withstand Test .13RATINGS16 Gener
30、al 14MARKINGS17 General 14PHOTOVOLTAIC (PV) MOLDED-CASE SWITCHESCONSTRUCTION18 General 16PERFORMANCE19 General 1620 Abnormal Current Opening Test 1721 Short Circuit Current Withstand Test 1722 Dielectric Voltage-Withstand Test .17MARCH 7, 2016 CSA C22.2 NO. 305-16 UL 489B 3RATINGS23 General 18MARKIN
31、GS24 General 18PHOTOVOLTAIC (PV) CIRCUIT-BREAKER ENCLOSURECONSTRUCTION25 General 1826 Wiring Space .18PERFORMANCE27 Short Circuit Current Test 19RATINGS28 General 19MARKINGS29 General 19Annex A (Informative)Standards for ComponentsA1 Component Standards 20Annex B (Normative)Referenced StandardsB1 Re
32、ferenced Standards 21Annex C (Informative) French Translations and MarkingsMARCH 7, 2016CSA C22.2 NO. 305-16 UL 489B4PREFACEThis is the harmonized CSA Group and UL standard for Molded-Case Circuit Breakers, Molded-CaseSwitches, and Circuit-Breaker Enclosures for Use with Photovoltaic (PV) Systems. I
33、t is the First edition ofCSA C22.2 No. 305 and the First edition of UL 489B.This harmonized standard was prepared by CSA Group and Underwriters Laboratories Inc. (UL). Theefforts and support of the Technical Harmonization Subcommittee, THSC 121A, Photo Voltaic CircuitBreakers on the Harmonization of
34、 Electrotechnical Standards of the Nations of the Americas (CANENA),are gratefully acknowledged.This standard is considered suitable for use for conformity assessment within the stated scope of thestandard.This standard was reviewed by the CSA Subcommittee on Molded Case Circuit Breakers for PVAppli
35、cations, under the jurisdiction of the CSA Technical Committee on Industrial Products and the CSAStrategic Steering Committee on Requirements for Electrical Safety, and has been formally approved bythe CSA Technical Committee.This standard has been approved by the American National Standards Institu
36、te (ANSI) as an AmericanNational Standard.Application of StandardWhere reference is made to a specific number of samples to be tested, the specified number is to beconsidered a minimum quantity.Note: Although the intended primary application of this standard is stated in its scope, it is important t
37、o note thatit remains the responsibility of the users of the standard to judge its suitability for their particular purpose.Level of HarmonizationThis standard uses the IEC format but is not based on, nor is it considered equivalent to, an IEC standard.This standard is published as an identical stan
38、dard for CSA Group and UL.An identical standard is a standard that is exactly the same in technical content except for nationaldifferences resulting from conflicts in codes and governmental regulations. Presentation is word for wordexcept for editorial changes.Reasons for Differences From IECThis st
39、andard provides requirements for molded-case circuit breakers, molded-case switches, andcircuit-breaker enclosures for use with photovoltaic (PV) systems for use in accordance with the electricalinstallation codes of Canada and the United States. At present there is no IEC standard for these product
40、sfor use in accordance with these codes. Therefore, this standard does not employ any IEC standard forbase requirements.MARCH 7, 2016 CSA C22.2 NO. 305-16 UL 489B 5InterpretationsThe interpretation by the standards development organization of an identical or equivalent standard isbased on the litera
41、l text to determine compliance with the standard in accordance with the proceduralrules of the standards development organization. If more than one interpretation of the literal text has beenidentified, a revision is to be proposed as soon as possible to each of the standards developmentorganization
42、s to more accurately reflect the intent.MARCH 7, 2016CSA C22.2 NO. 305-16 UL 489B6Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures for Use with Photovoltaic (PV) SystemsALL DEVICESINTRODUCTION1 Scope1.1 These requirements cover molded-case circuit breakers, molded-c
43、ase switches, and circuit-breakerenclosures rated up to 1500 V dc, intended for use with photovoltaic (PV) systems and Ref. No. 1 ofAnnex B.1.2 These requirements are intended to be used in conjunction with the requirements in Ref. No. 2 ofAnnex B, except as modified or supplemented by this Standard
44、.1.3 These requirements do not cover molded-case circuit breakers or molded-case switches intended foruse in battery circuits.2 Components2.1 Except as indicated in 2.2, a component of a product covered by this Standard shall comply with therequirements for that component. See Annex A for a list of
45、standards covering components generally usedin the products covered by this Standard. A component shall comply with the CSA and UL Standards asappropriate for the country where the product is to be used.2.2 A component is not required to comply with a specific requirement that:a) Involves a feature
46、or characteristic not required in the application of the component in theproduct covered by this Standard; orb) Is superseded by a requirement in this Standard.2.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.2.4 Specific components are incomp
47、lete in construction features or restricted in performance capabilities.Such components are intended for use only under limited conditions, such as certain temperatures notexceeding specified limits, and shall be used only under those specific conditions.3 Units of Measurement3.1 The values given in
48、 SI (metric) units shall be normative. Any other values given shall be forinformation purposes only.4 Normative References4.1 Products covered by this Standard shall comply with the referenced installation codes and standardsnoted in Annex B as appropriate for the country where the product is to be
49、used. When the product isintended for use in more than one country, the product shall comply with the installation codes andstandards for all countries where it is intended to be used.MARCH 7, 2016 CSA C22.2 NO. 305-16 UL 489B 74.2 Where reference is made to any Standards, such reference shall be considered to refer to the latesteditions and revisions thereto available at the time of printing, unless otherwise specified.4.3 For products intended for use in Canada, general requirements are given in Ref. No
