UL 50E-2015 UL Standard for Safety Enclosures for Electrical Equipment Environmental Considerations (Second Edition).pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 50E Enclosures for Electrical Equipment, Environmental ConsiderationsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED

2、MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Enclosures for Electrical Equipment, Environmental Considerations,UL 50E Second Edition, Dated October 16, 2015 Summary of Topics This Second Edition of UL 50E was issued to include

3、 the following requirements: Addition of environmental Type ratings 3X, 3RX, and 3SX Revisions to the Gasket Compression Test Brass inserts for enclosures Revisions to specify tightening torque for eld installed screws and fasteners critical to maintaining the environmental integrity of an enclosure

4、 Elimination of Hand Flexing Test for Gaskets The revised requirements are substantially in accordance with Proposal(s) on this subject dated October 10, 2014 and July 10, 2015. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any fo

5、rm by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. I

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8、loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those parag

9、raphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the preface. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS

10、notice. OCTOBER 16, 2015 UL 50E tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL OCTOBER 16, 2015 UL 50E tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Ass

11、ociation of Standardization and Certication NMX-J-235/2-ANCE-2015 Third Edition CSA Group CSA C22.2 No. 94.2-15 Second Edition Underwriters Laboratories Inc. UL 50E Second Edition Enclosures for Electrical Equipment, Environmental Considerations October 16, 2015 ANSI/UL 50E-2015UL COPYRIGHTED MATERI

12、AL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Commitment for Amendments This standard is issued jointly by the Association of Standardization and Certication (ANCE), CSA Group, and Underwriters Laboratories Inc. (UL). Comments or proposals for revisions on any

13、 part of the standard may be submitted to ANCE, CSA Group, or UL at any time. Revisions to this standard will be made only after processing according to the standards development procedures of ANCE, CSA Group, and UL. CSA Group and UL will issue revisions to this standard by means of a new edition o

14、r revised or additional pages bearing their date of issue. ANCE will incorporate the same revisions into a new edition of the standard bearing the same date of issue as the CSA Group and UL pages. Copyright 2015 ANCE Rights reserved in favor of ANCE. ISBN 1-55397-628-2 2015 CSA Group All rights rese

15、rved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher. This standard is subject to periodic review, and suggestions for its improvement will be referred to the appropriate committee. To submit a proposal for change, please send the f

16、ollowing information to inquirescsagroup.org and include Proposal for change in the subject line: Standard designation (number); relevant clause, table, and/or gure number; wording of the proposed change; and rationale for the change. To purchase CSA Group Standards and related publications, visit C

17、SA Groups Online Store at shop.csa.ca or call toll-free 1-800-463-6727 or 416-747-4044. Copyright 2015 Underwriters Laboratories Inc. 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-Lin

18、e Collaborative Standards Development System (CSDS) at http:/. The most recent designation of ANSI/UL 50E as an American National Standard (ANSI) occurred on September 30, 2015. This ANSI/UL Standard for Safety consists of the Second Edition To purchase UL Standards, visit COMM 2000 at http:/m- or c

19、all toll free 1-888-853-3503.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS Preface .5 1 Scope .7 2 Units of Measurement .7 3 Components 7 4 Normative References .8 5 Denitions 8 6 Enclosure Types and Applications .11 7 Constructio

20、n .11 7.1 Polymeric materials 11 7.2 Corrosion protection .12 7.3 Openings .14 7.4 Conduit connection 16 7.5 External operating mechanisms .16 7.6 Access to interior 17 7.7 Gaskets 17 8 Tests .18 8.1 General 18 8.2 Drip test 18 8.3 Rain test .19 8.4 Dust test .20 8.5 External icing test .22 8.6 Hose

21、down test 22 8.7 Indoor corrosion protection .23 8.8 Outdoor corrosion protection 24 8.9 Additional corrosion protection for type 3X, 3RX, 3SX, 4X and 6P .26 8.10 Submersion test 26 8.11 Pressure test 26 8.12 Oil exclusion test .27 8.13 Gasket tests .28 8.14 Rod entry test .29 8.15 Misalignment test

22、 .29 8.16 Water exposure and immersion 30 9 Marking .30 9.1 General 30 9.2 Type designations .30 9.3 Supplemental markings 31 9.4 Location 31 9.5 Orientation .31 9.6 Equipment openings .32 9.7 Drainage openings 32 9.8 Screws and screw type fasteners 32 Tables 33 Figures .38 Annex A Standards For Com

23、ponents (Normative) Annex B Reference Standards (Normative) OCTOBER 16, 2015 NMX-J-235/2-ANCE-2015 CSA C22.2 NO. 94.2-15 UL 50E 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Annex C Permanence Of Marking (Normative In The United States On

24、ly) Annex D Water Immersion Test (Normative) D.1 Water Exposure and Immersion .47 D.1.1 General 47 D.1.2 Dimensional change .47 D.1.3 Water exposure and immersion test .48 OCTOBER 16, 2015 NMX-J-235/2-ANCE-2015 CSA C22.2 NO. 94.2-15 UL 50E 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUC

25、TION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Preface This is the harmonized ANCE, CSA Group, and UL standard for Enclosures for Electrical Equipment, Environmental Considerations. It is the third edition of NMX-J-235/2-ANCE-2015, the second edition of CSA C22.2 No. 94.2-15, and the second edition

26、 of UL 50E. This edition of CSA C22.2 No. 94.2 supersedes the previous edition published in 2007. This edition of UL 50E supersedes the previous edition published on September 4, 2007. This harmonized standard was prepared by the Association of Standardization and Certication (ANCE), CSA Group, and

27、Underwriters Laboratories Inc. (UL). The efforts and support of Technical Harmonization Committee 70/31 are gratefully acknowledged. This standard is considered suitable for use for conformity assessment within the stated scope of the standard. The present Mexican standard was developed by the CT CD

28、I Control y Distribucin Industrial from the Comit de Normalizacin de la Asociacin de Normalizacin y Certicacin, A.C., CONANCE, with the collaboration of the enclosures manufacturers and users. This standard was reviewed by the CSA Integrated Committee on Enclosures, under the jurisdiction of the CSA

29、 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 Institute (ANSI) as an American National Stand

30、ard. Application of Standard Where reference is made to a specic number of samples to be tested, the specied number is considered a minimum quantity. Note: Although the intended primary application of this standard is stated in its scope, it is important to note that it remains the responsibility of

31、 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 equivalent standard for ANCE, CSA Group, and UL. An eq

32、uivalent standard is a standard that is substantially the same in technical content, except as follows: Technical national differences are allowed for codes and governmental regulations as well as those recognized as being in accordance with NAFTA Article 905, for example, because of fundamental cli

33、matic, geographical, technological, or infrastructural factors, scientic justication, or the level of protection that the country considers appropriate. Presentation is word for word except for editorial changes. Reasons for differences from IEC The THSC investigated and found no existing IEC standa

34、rds or work programs covering the scope of the products in this standard. OCTOBER 16, 2015 NMX-J-235/2-ANCE-2015 CSA C22.2 NO. 94.2-15 UL 50E 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Interpretations The interpretation by the standard

35、s 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 literal text has been identied, a revisio

36、n is to be proposed as soon as possible to each of the standards development organizations to more accurately reect the intent. OCTOBER 16, 2015 NMX-J-235/2-ANCE-2015 CSA C22.2 NO. 94.2-15 UL 50E 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM

37、 UL Enclosures for Electrical Equipment, Environmental Considerations 1 Scope 1.1 This standard applies to enclosures for electrical equipment intended to be installed and used in non-hazardous locations in accordance with the Canadian Electrical Code, Part I, CSA C22.1, the provisions of the Nation

38、al Electrical Code, NFPA 70, and the provisions of Mexicos Electrical Installations, NOM-001-SEDE, as follows: a) Enclosures for indoor locations, Types 1, 2, 5, 12, 12K, and 13; and b) Enclosures for indoor or outdoor locations, Types 3, 3X, 3R, 3RX, 3S, 3SX, 4, 4X, 6, and 6P. 1.2 This standard cov

39、ers additional environmental construction and performance requirements for enclosures. The general requirements for enclosures are contained in CSA C22.2 No. 94.1, UL 50, and NMX-J-235/1-ANCE (See Annex B, Ref. No. 10) or the end-use product standards that are to be used in conjunction with this sta

40、ndard. 1.3 This standard does not cover the requirements for protection of devices against conditions such as condensation, icing, corrosion, or contamination that may occur within the enclosure or that may enter via conduit or unsealed openings. 1.4 Where an individual product standard contains req

41、uirements that are at variance with those of this standard, the requirements of the individual product standard take precedence. 2 Units of Measurement 2.1 The values given in SI (metric) units shall be normative. Any other values given shall be for informational purposes only. 3 Components 3.1 Exce

42、pt as indicated in Clause 3.2, 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 products covered by this standard. A component shall comply with the ANCE, CSA Group,

43、or UL standards as appropriate for the country where the product is to be used. 3.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, or b) Is superse

44、ded by a requirement in this standard. 3.3 A component shall be used in accordance with its rating established for the intended conditions of use. OCTOBER 16, 2015 NMX-J-235/2-ANCE-2015 CSA C22.2 NO. 94.2-15 UL 50E 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITH

45、OUT PERMISSION FROM UL 3.4 Specic components are incomplete in construction features or restricted in performance 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 con

46、ditions. 4 Normative References 4.1 For undated references to standards, such reference shall be considered to refer to the latest edition and all revisions to that edition up to the time when this standard was approved. For dated references to standards, such reference shall be considered to refer

47、to the dated edition and all revisions published up to the time the standard was approved. 4.2 In Canada, general requirements are as indicated in Annex B, Ref. No. 6. 5 Denitions The following denitions are applicable in this standard: 5.1 BOX That portion of an enclosure not including the cover or

48、 door. 5.2 BREAKOUT A portion of a wall of a cast or molded enclosure so fashioned, usually by the use of one or more rings of reduced thickness of the wall material, that the material within the outer perimeter of the ring to be removed may be readily broken away at the time of installation in orde

49、r to provide an opening similar to that provided by a knockout. 5.3 DEGREE OF PROTECTION The extent of protection provided by an enclosure against access to parts which result in a risk of injury, ingress of foreign solid objects, and/or ingress of water as veried by standardized test methods. 5.4 DESIGN TESTS Tests to demonstrate performance of a product designed to applicable standards; they are not intended to be production te