1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 60079-15 Explosive atmospheres Part 15: Equipment protection by type of protection n UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM U
2、LUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Explosive atmospheres Part 15: Equipment protection by type of protection n , UL 60079-15 Fourth Edition, Dated February 15, 2013 Summary of Topics This revision to
3、ANSI/UL 60079-15, the Standard for Safety for Explosive Atmospheres Part 15: Equipment Protection by Type of Protection n , (Edition 4.0, Issued by the IEC January 2010) is issued to note the effective date information which was rst published February 15, 2013 with effective date to be determined. I
4、t also contains editorial corrections to 24.3 to add “Class I, Zone 2, A” prex to the marking examples. As noted in the Commitment for Amendments statement located on the back side of the title page, UL and ISA are committed to updating this bi-national standard jointly. However, the revision pages
5、dated August 2, 2013 will not be issued by ISA as revision pages but as an update to their standard. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. All rights reserved. No part of this publication may be reproduc
6、ed, stored in a retrieval system, or transmitted in any form 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
7、 warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, e
8、ven if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to def
9、end, indemnify, and hold UL harmless from and against any 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 STANDARDS TEC
10、HNICAL PANEL FOR UL 60079-15 HAS DETERMINED THAT AS OF SEPTEMBER 1, 2018, EDITION 3 OF UL 60079-15 WILL BE WITHDRAWN AND MAY BE USED TO DETERMINE A PRODUCTS COMPLIANCE UNTIL THIS DATE. The following table summarizes the active editions of UL 60079-15, and lists the established withdrawal date for ea
11、ch edition of this standard. AUGUST 2, 2013 UL 60079-15 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Standard Edition Status of Edition (Active/Withdrawn) Established Withdrawal Date for Each Standard Edition 3 Active September 1, 2018
12、 4 Active Active until further notice Note: These editions may be used to determine compliance for new or modied products until the dates shown. When the Standards Technical Panel has determined that all existing products shall be upgraded and assessed for compliance with a new standard edition, the
13、 edition number will be noted with an “*” in this table. AUGUST 2, 2013 UL 60079-15 tr2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL ISA The International Society of Automation ANSI/ISA 60079-15 (12.12.02)-2012 Fourth Edition Underwriters
14、Laboratories Inc. ANSI/UL 60079-15 Fourth Edition Explosive atmospheres Part 15: Equipment protection by type of protection n February 15, 2013 (Title Page Reprinted: August 2, 2013) ANSI/UL 60079-15-2013UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSI
15、ON FROM UL Commitment for Amendments This Standard is issued jointly by ISA and Underwriters Laboratories Incorporated (UL). Comments or proposals for revisions on any part of the standard may be submitted to ISA and UL at any time. Revisions to this standard will be made only after processing accor
16、ding to the standards development procedures by ISA and UL. ISA 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 978-1-937560-65-2 Copyright 2012 ISA These materials are subject to copyright claims of IEC, ANSI, a
17、nd ISA. All rights reserved. Not for resale. Printed in the United States of America. No part of this publication may be reproduced in any form, including an electronic retrieval system, without the prior written permission of ISA. All requests pertaining to this standard should be submitted to ISA.
18、 The most recent designation of ANSI/ISA 60079-15 as an American National Standard (ANSI) occurred on February 15, 2013. Copyright 2013 Underwriters Laboratories Inc. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All
19、 of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. This ANSI/UL Standard for Safety consists of the Fourth edition including revisions through August 2, 2013. The most recent designation of ANSI/UL 60079-15 as an
20、 American National Standard (ANSI) occurred on February 15, 2013. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page (front and back), or the Preface. The National Difference Page and IEC Foreword are also excluded from the ANSI approval of IEC-based standard
21、s. 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 2000 at http:/m- or call toll-f
22、ree 1-888-853-3503.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS General Notes 6 Preface (ISA) .7 National Differences . 11 FOREWORD . 12 1 Scope 14 2 Normative references .20 3 Terms and denitions 25 4 General .27 4.1 Equipment g
23、rouping and temperature classication 27 4.2 Potential ignition sources .27 5 Temperatures .27 5.1 Maximum surface temperature 27 5.2 Small components .28 6 Requirements for electrical equipment 28 6.1 General 28 6.2 Opening times 28 6.3 Minimum degree of protection .28 6.4 Clearances, creepage dista
24、nces and separations 29 6.5 Electric strength .36 7 Connection facilities and terminal compartments .37 7.1 General 37 7.2 Field wiring connections 38 7.3 Factory connections .40 8 Supplementary requirements for non-sparking electrical rotating machines 41 8.1 General 41 8.2 Machine enclosure 42 8.3
25、 Terminal boxes 42 8.4 Conduit stopping boxes, cable sealing and dividing boxes 42 8.5 Connection facilities for external conductors 42 8.6 Neutral point connections .42 8.7 Radial air gap .43 8.8 Rotor cages 44 8.9 Stator winding insulation system 46 8.10 Surface temperature limitation .46 9 Supple
26、mentary requirements for non-sparking fuses and fuse assemblies 47 9.1 Fuses 47 9.2 Temperature class of equipment 48 9.3 Fuse mounting 48 9.4 Fuse enclosures 48 9.5 Replacement fuse identication .48 10 Supplementary requirements for non-sparking plugs and sockets .48 10.1 Plugs and sockets for exte
27、rnal connections 48 10.2 Maintaining degree of protection (IP code) 51 10.3 Sockets that do not have plugs inserted in normal operation .51 11 Supplementary requirements for non-sparking luminaires 51 11.1 General .51 FEBRUARY 15, 2013 ANSI/ISA 60079-15 (12.12.02)-2012 ANSI/UL 60079-15 3UL COPYRIGHT
28、ED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 11.2 Construction .51 11.3 Luminaires for tubular uorescent bi-pin lamps .57 11.4 Other equipment containing light sources .60 12 Supplementary requirements for equipment incorporating non-sparking cells a
29、nd batteries . .60 12.1 General .60 12.2 Categorization of cells and batteries 60 12.3 General requirements for cells and batteries of types 1 and 2 .62 12.4 Charging of type 1 and type 2 cells and batteries 64 12.5 Requirements for type 3 secondary batteries 65 12.6 Verication and tests .69 13 Supp
30、lementary requirements for non-sparking low power equipment 69 14 Supplementary requirements for non-sparking current transformers .70 15 Other non-sparking electrical equipment .71 16 General supplementary requirements for equipment producing arcs, sparks or hot surfaces .71 17 Supplementary requir
31、ements for enclosed-break devices and non-incendive components producing arcs, sparks or hot surfaces 71 17.1 Type testing .71 17.2 Ratings .72 17.3 Construction of enclosed-break devices .72 18 Supplementary requirements for hermetically sealed devices producing arcs, sparks or hot surfaces .73 19
32、Supplementary requirements for sealed devices producing arcs, sparks or hot surfaces .73 19.1 Non-metallic materials 73 19.2 Opening .74 19.3 Internal spaces 74 19.4 Handling 74 19.5 Gasket and seals 74 19.6 Type tests .75 20 Supplementary requirements for restricted-breathing enclosures protecting
33、equipment producing arcs, sparks or hot surfaces 75 20.1 General .75 20.2 Constructional requirements .75 20.3 Temperature limitation 81 20.4 Additional requirements for restricted breathing luminaires 81 21 General information on verication and tests .82 22 Type tests .82 22.1 Representative sample
34、s .82 22.2 Test conguration 82 22.3 Tests for enclosures on which the type of protection depends .82 22.4 Tests for enclosed break devices and non incendive components 83 22.5 Tests for sealed devices 85 22.6 Type test requirements for restricted-breathing enclosures 88 22.7 Test for screw lampholde
35、rs 89 22.8 Test for starter holders for luminaires .90 22.9 Tests for electronic starters for tubular uorescent lamps and for ignitors for high pressure sodium or metal halide lamps 90 22.10 Test for wiring of luminaires subject to high-voltage impulses from ignitors .92 22.11 Mechanical shock test
36、for batteries 92 22.12 Insulation resistance test for batteries 93 22.13 Additional ignition tests for large or high-voltage machines .94 23 Routine verications and tests 95 23.1 General .95 23.2 Specic routine tests .95 FEBRUARY 15, 2013 ANSI/ISA 60079-15 (12.12.02)-2012 ANSI/UL 60079-15 4UL COPYRI
37、GHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 24 Marking 97 24.1 General .97 24.2 Additional marking for batteries 98 24.3 Examples of marking 98A 25 Documentation 100 26 Instructions .101 Annex A (informative) Application, installation, and testin
38、g considerations for Ex “nA” asynchronous machines A.1 Surface temperature 102 A.2 Starting 102 A.3 Rated voltage and surface discharges .103 Bibliography AUGUST 2, 2013 ANSI/ISA 60079-15 (12.12.02)-2012 ANSI/UL 60079-15 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTIO
39、N WITHOUT PERMISSION FROM UL General Notes This is the common ISA and UL Standard for Explosive atmospheres Part 15: Equipment protection by type of protection n . It is the Fourth edition of ANSI/ISA 60079-15 (superseding ANSI/ISA 60079-15 (12.12.02)-2009) and the Fourth edition of ANSI/UL 60079-15
40、. This document is a modication of the IEC document and includes U.S. deviations encompassing both additions and deletions of information. ANSI/ISA 60079-15 and ANSI/UL 60079-15 contain identical requirements, and identical publication dates. The presentation and format of the standards material may
41、 differ between the two published standards. This common Standard was prepared by the International Society of Automation (ISA) and Underwriters Laboratories Inc. (UL). Note: Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains th
42、e responsibility of the users of the Standard to judge its suitability for their particular purpose. Level of harmonization This standard adopts the IEC text with deviations. The requirements are presented in different formats. The ISA version of the standard illustrates the national differences fro
43、m the IEC text through the use of legislative text (strike-out and underline). The UL version of the standard illustrates national differences immediately following the IEC text. National differences between the UL version and the ISA version shall be word for word except for editorial changes. Inte
44、rpretations The interpretation by the SDO of an identical or equivalent standard shall be based on the literal text to determine compliance with the standard in accordance with the procedural rules of the SDO. If more than one interpretation of the literal text has been identied, a revision shall be
45、 proposed as soon as possible to each of the SDOs to more accurately reect the intent. UL Effective Date The effective date for UL is the date of publication. However, the third edition of UL 60079-15 will also be effective until September 1, 2018. A UL effective date is one established by Underwrit
46、ers Laboratories Inc. and is not part of the ANSI approved standard. AUGUST 2, 2013 ANSI/ISA 60079-15 (12.12.02)-2012 ANSI/UL 60079-15 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Preface (ISA) This ISA standard is based on the 4th editi
47、on of IEC Publication 60079-15. It is the intention of the ISA12 Committee to develop an ANSI Standard that is harmonized with IEC 60079-15 to the fullest extent possible. This preface is included for informational purposes and is not part of ANSI/ISA-60079-15. The document is a modication of the IE
48、C document and includes U.S. deviations encompassing both additions and deletions of information. The signicant changes with respect to the previous edition are listed below: addition of equipment protection levels; removal of the requirements for energy-limited “nL” and associated energy limited ap
49、paratus “nL”; removal of the requirements for encapsulated Devices “nC”; requirements for electrical connections expanded and claried; requirements for luminaire ballasts expanded and claried; requirements for evaluation and testing of motor rotors claried; 15 kV limit for equipment protection by type of protection n added; spacing requirement for voltages above 10 kV modied; require
