ANSI UL 489B-2016 UL Standard for Safety Molded-Case Circuit Breakers Molded-Case Switches and Circuit-Breaker Enclosures for Use with Photovoltaic (PV) Systems (First Edition).pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 489B Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures for Use with Photovoltaic (PV) Systems STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR F

2、URTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures for Use with Photovol

3、taic (PV) Systems, UL 489B First Edition, Dated March 7, 2016 Summary of Topics The following Standard has been published: The Standard for Safety for Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures for Use with Photovoltaic (PV) Systems The new requirements are su

4、bstantially in accordance with Proposal(s) on this subject dated April 10, 2015 and November 6, 2015. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwis

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8、ttorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. MARCH 7, 2016 UL 489B tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 7, 2016 UL 48

9、9B tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CSA Group CSA C22.2 No. 305-16 First Edition Underwriters Laboratories Inc. UL 489B First Edition Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Brea

10、ker Enclosures for Use with Photovoltaic (PV) Systems March 7, 2016 ANSI/UL 489B-2016UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Commitment for Amendments This standard is issued jointly by the Canadian Standards Association (operating a

11、s CSA Group ) and Underwriters Laboratories Inc. (UL). Comments or proposals for revisions on any part of the standard may be submitted to CSA Group or UL at any time. Revisions to this standard will be made only after processing according to the standards development procedures of CSA Group and UL.

12、 CSA Group and UL will issue revisions to this standard by means of a new edition or revised or additional pages bearing their date of issue. ISBN 978-1-77139-953-1 2016 CSA Group All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission o

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16、e and exclusive property of UL. This ANSI/UL Standard for Safety consists of the First Edition. The most recent designation of ANSI/UL 489B as an American National Standard (ANSI) occurred on March 7, 2016. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page (

17、front and back), or the Preface. 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 Collaborative Standards Development System (CSDS) at http:/. To purchase UL Standards, visit Comm 2

18、000 at http:/m- or call toll-free 1-888-853-3503.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS PREFACE 5 ALL DEVICES INTRODUCTION 1 Scope .7 2 Components 7 3 Units of Measurement .7 4 Normative References .7 5 Denitions 8 PHOTOVOL

19、TAIC (PV) MOLDED-CASE CIRCUIT BREAKERS CONSTRUCTION 6 General 8 7 Spacings .8 8 Wire Terminals .8 PERFORMANCE 9 General .10 10 Endurance Test 12 11 Temperature Test .12 12 100 Percent Calibration at 50C 12 13 Limited Fault Interrupting Test 13 14 Standard Fault Interrupting Test 13 15 Dielectric Vol

20、tage-Withstand Test .13 RATINGS 16 General 14 MARKINGS 17 General 14 PHOTOVOLTAIC (PV) MOLDED-CASE SWITCHES CONSTRUCTION 18 General 16 PERFORMANCE 19 General 16 20 Abnormal Current Opening Test 17 21 Short Circuit Current Withstand Test 17 22 Dielectric Voltage-Withstand Test .17 MARCH 7, 2016 CSA C

21、22.2 NO. 305-16 UL 489B 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL RATINGS 23 General 18 MARKINGS 24 General 18 PHOTOVOLTAIC (PV) CIRCUIT-BREAKER ENCLOSURE CONSTRUCTION 25 General 18 26 Wiring Space .18 PERFORMANCE 27 Short Circuit Cur

22、rent Test 19 RATINGS 28 General 19 MARKINGS 29 General 19 Annex A (Informative) Standards for Components A1 Component Standards 20 Annex B (Normative) Referenced Standards B1 Referenced Standards 21 Annex C (Informative) French Translations and Markings MARCH 7, 2016 CSA C22.2 NO. 305-16 UL 489B 4UL

23、 COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PREFACE This is the harmonized CSA Group and UL standard for Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures for Use with Photovoltaic (PV) Systems. It is the F

24、irst edition of CSA C22.2 No. 305 and the First edition of UL 489B. This harmonized standard was prepared by CSA Group and Underwriters Laboratories Inc. (UL). The efforts and support of the Technical Harmonization Subcommittee, THSC 121A, Photo Voltaic Circuit Breakers on the Harmonization of Elect

25、rotechnical 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 the standard. This standard was reviewed by the CSA Subcommittee on Molded Case Circuit Breakers for PV Applic

26、ations, under the jurisdiction of the CSA Technical Committee on Industrial Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the CSA Technical Committee. This standard has been approved by the American National Standards Insti

27、tute (ANSI) as an American National Standard. Application of Standard Where reference is made to a specic number of samples to be tested, the specied number is to be considered a minimum quantity. Note: Although the intended primary application of this standard is stated in its scope, it is importan

28、t to note that it remains the responsibility of the users of the standard to judge its suitability for their particular purpose. Level of Harmonization This 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 identic

29、al standard for CSA Group and UL. An identical standard is a standard that is exactly the same in technical content except for national differences resulting from conicts in codes and governmental regulations. Presentation is word for word except for editorial changes. Reasons for Differences From I

30、EC This standard provides requirements for molded-case circuit breakers, molded-case switches, and circuit-breaker enclosures for use with photovoltaic (PV) systems for use in accordance with the electrical installation codes of Canada and the United States. At present there is no IEC standard for t

31、hese products for use in accordance with these codes. Therefore, this standard does not employ any IEC standard for base requirements. MARCH 7, 2016 CSA C22.2 NO. 305-16 UL 489B 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Interpretation

32、s The interpretation by the standards development organization of an identical or equivalent standard is based on the literal text to determine compliance with the standard in accordance with the procedural rules of the standards development organization. If more than one interpretation of the liter

33、al text has been identied, a revision is to be proposed as soon as possible to each of the standards development organizations to more accurately reect the intent. MARCH 7, 2016 CSA C22.2 NO. 305-16 UL 489B 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERM

34、ISSION FROM UL Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit- Breaker Enclosures for Use with Photovoltaic (PV) Systems ALL DEVICES INTRODUCTION 1 Scope 1.1 These requirements cover molded-case circuit breakers, molded-case switches, and circuit-breaker enclosures rated up to 1500

35、V dc, intended for use with photovoltaic (PV) systems and Ref. No. 1 of Annex B. 1.2 These requirements are intended to be used in conjunction with the requirements in Ref. No. 2 of Annex B, except as modied or supplemented by this Standard. 1.3 These requirements do not cover molded-case circuit br

36、eakers or molded-case switches intended for use in battery circuits. 2 Components 2.1 Except as indicated in 2.2, a component of a product covered by this Standard shall comply with the requirements for that component. See Annex A for a list of standards covering components generally used in the pro

37、ducts covered by this Standard. A component shall comply with the CSA and UL Standards as appropriate for the country where the product is to be used. 2.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of

38、the component in the product covered by this Standard; or b) 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 of use. 2.4 Specic components are incomplete in construction features or restricted in per

39、formance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. 3 Units of Measurement 3.1 The values given in SI (metric) units shall be normative. Any other v

40、alues given shall be for information purposes only. 4 Normative References 4.1 Products covered by this Standard shall comply with the referenced installation codes and standards noted in Annex B as appropriate for the country where the product is to be used. When the product is intended for use in

41、more than one country, the product shall comply with the installation codes and standards for all countries where it is intended to be used. MARCH 7, 2016 CSA C22.2 NO. 305-16 UL 489B 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4.2 Wher

42、e reference is made to any Standards, such reference shall be considered to refer to the latest editions and revisions thereto available at the time of printing, unless otherwise specied. 4.3 For products intended for use in Canada, general requirements are given in Ref. No. 3 of Annex B. In the US,

43、 this does not apply. 5 Denitions 5.1 For the purpose of this Standard, the following denitions apply. 5.2 PHOTOVOLTAIC (PV) MOLDED-CASE CIRCUIT BREAKER (PV circuit breaker)AD Cmolded- case circuit breaker intended to operate in a photovoltaic (PV) system to provide overcurrent protection and discon

44、necting means, hereafter referred to as PV circuit breaker. 5.3 PHOTOVOLTAIC (PV) CIRCUIT-BREAKER ENCLOSURE A circuit-breaker enclosure intended for use in a photovoltaic (PV) system, hereafter referred to as PV enclosure. 5.4 PHOTOVOLTAIC (PV) MOLDED-CASE SWITCH (PV switch)AD Cmolded-case switch in

45、tended to operate in a photovoltaic (PV) system to provide disconnecting means, hereafter referred to as PV switch. PHOTOVOLTAIC (PV) MOLDED-CASE CIRCUIT BREAKERS CONSTRUCTION 6 General 6.1 The construction of a PV circuit breaker shall comply with the requirements as specied in Clause 6.1 of Ref. N

46、o. 2 of Annex B, except as noted in Clauses68o fthis Standard as applicable. 6.2 PV circuit breakers shall be considered as single poles for individual PV sources or strings that are permitted to use multiple sets of contacts in series, unless marked in accordance with 17.5. See also 9.9. 7 Spacings

47、 7.1 The electrical spacings for PV circuit breakers rated 600V or less shall meet the requirements of Clause 6.1.6 of Ref. No. 2 of Annex B. Those PV circuit breakers rated 601 1500V shall meet the requirements of Ref. No. 2 of Annex B for 600V. 8 Wire Terminals 8.1 A eld wiring terminal of a PV ci

48、rcuit breaker shall have a capacity acceptable for the number, wire size, and type of stranding associated with the circuit breaker and in addition shall be acceptable for at least the size indicated in Table 8.1. MARCH 7, 2016 CSA C22.2 NO. 305-16 UL 489B 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR

49、 FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 8.1 75C conductor size corrected to 50C ambient temperature Terminal current a , A Copper conductors b,c Aluminum conductors b,c Number of conductors AWG or kcmil Number of conductors AWG or kcmil 15 or less 1 14 1 12 2 011 011 0 2 511 018 3 01818 4 01614 5 01413 6 01412 7 01311 80 1 2 1 1/0 90 1 1 1 1/0 100 1 1/0 1 2/0 110 1 1/0 1 3/0 125 1 2/0 1 4/0 150 1 3/0 1 250 175 1 250 1 350 2