1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 60079-6 Explosive atmospheres Part 6: Equipment protection by liquid immersion o STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PE
2、RMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Explosive Atmospheres Part 6: Equipment Protection by Liquid Immersion o , UL 60079-6 Fourth Edition, Dated April 29, 2016 Summary of Topics Adoption
3、of IEC 60079-6, Explosive Atmospheres - Part 6: Equipment Protection by Liquid Immersion o (fourth edition issued by IEC February 2015) as a new IEC-based UL standard, UL 60079-6 with US Differences. The requirements are substantially in accordance with Proposal(s) on this subject dated January 29,
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8、ectronic Standard on the purchasers computer system. APRIL 29, 2016 UL 60079-6 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 29, 2016 UL 60079-6 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTI
9、ON OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 29, 2016 1 UL 60079-6 Standard for Explosive Atmospheres Part 6: Equipment Protection by Liquid Immersion o First Edition December, 2002 Second Edition March, 2007 Third Edition July, 2009 Fourth Edition April 29, 2016 This ANSI/UL Standard for Saf
10、ety consists of the Fourth Edition. The most recent designation of ANSI/UL 60079-6 as an American National Standard (ANSI) occurred on April 29, 2016. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page or Preface. The National Difference Page and IEC Foreword
11、 are also excluded from the ANSI approval of IEC-based standards. 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:/. ULs S
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13、ATORIES INC. ANSI/UL 60079-6-2016UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 29, 2016 UL 60079-6 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTE
14、NTS Preface (UL) 4 National Differences 6 FOREWORD 7 1 Scope .9 2 Normative references 9 3 Terms and denitions 10 4 Constructional requirements .11 4.1 General 11 4.2 Levels of protection and requirements of electrical equipment .12 4.3 Switching device 13 4.4 Creepage and clearance .13 4.5 Liquid c
15、ontainment enclosures 13 4.6 Immersion depth 15 4.7 Protective liquid level indication .15 4.8 Temperature limitations 16 4.9 Field wiring connections to liquid immersion equipment 17 4.10 Constructional elements of enclosures 17 5 Protective Liquid .17 5.1 Protective liquid specication .17 5.2 Deta
16、iled alternative specication 18 5.3 Group I equipment 19 5.4 Liquid contamination and gassing that may result from arcing .19 5.5 Total volume of the protective liquid .19 6 Verications and tests 19 6.1 Type tests 19 6.2 Routine tests .21 7 Marking .21 8 Instructions 22 Annex A (normative) (informat
17、ive) Selection and erection requirements Annex B (normative) (informative) Maintenance requirements Annex C (normative) (informative) Repair and Overhaul requirements Bibliography APRIL 29, 2016 UL 60079-6 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMI
18、SSION FROM UL Preface (UL) This UL Standard is based on IEC Publication 60079-6: fourth edition Explosive atmospheres Part 6: Equipment protection by liquid immersion o . IEC publication 60079-6 is copyrighted by the IEC. The text, gures and tables of IEC Publication Explosive atmospheres Part 6: Eq
19、uipment protection by liquid immersion o , IEC 60079-6, copyright February 2015 are used in this Standard with the consent of the IEC and the American National Standards Institute (ANSI). The IEC copyrighted material has been reproduced with permission from ANSI. ANSI should be contacted regarding t
20、he reproduction of any portion of the IEC material. The IEC Foreword and Introduction are not a part of the requirements of this Standard but are included for information purposes only. Copies of IEC Publication 60079-6 may be purchased from ANSI, 11 West 42nd Street, New York, New York, 10036, (212
21、) 642-4900. 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 the users of the Standard to judge its suitability for their particular purpose. The following people served as members of STP 60079 and p
22、articipated in the review of this standard: NAME COMPANY T. Schnaare, Chair Rosemount Inc. *T. Adam FM Approvals LLC R. Allen Honeywell Inc. D. Ankele UL LLC S. Bihler CML Ex Inc. S. Blais Appleton Group K. Boegli KBB Consulting R. Brownlee Pepperl + Fuchs Inc. D. Burns Shell P any IEC National Comm
23、ittee interested in the subject dealt with may participate in this preparatory work. International, governmental and nongovernmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in acc
24、ordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all i
25、nterested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held resp
26、onsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergen
27、ce between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certication bodies provide conformity assessment services and, in some areas, access to IEC marks
28、of conformity. IEC is not responsible for any services carried out by independent certication bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
29、 members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publicat
30、ion or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publicat
31、ion may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60079-6 has been prepared by IEC technical committee 31: Equipment for explosive atmospheres. This fourth edition cancels and replaces the third editio
32、n, published in 2007. This edition constitutes a technical revision. The signicant changes with respect to the previous edition are listed below: APRIL 29, 2016 UL 60079-6 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Edition 4 represents
33、 a major technical revision of the requirements for oil immersion “o” and should be considered as introducing all new requirements. The normal “Table of Signicant Changes” has not been included for this reason. In particular: The requirements for oil immersion “o” have been redened into liquid immer
34、sion , levels of protection “ob” and “oc” as recommended by the responses to 31/715/DC The ability to protect sparking contacts has been added to both “ob” and “oc” Additional requirements have been introduced for the protective liquid. This part of IEC 60079 is to be used in conjunction with IEC 60
35、079-0, Explosive atmospheres Part 0: Equipment General requirements. The text of this standard is based on the following documents: FDIS Report on voting 31/1157/FDIS 31/1172/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the ab
36、ove table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 60079 series, under the general title Explosive atmospheres, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website under http:/webstore.iec.ch in the data related to the specic publication. At this date, the publication will be reconrmed, withdrawn, replaced by a revised edition, or amended. APRIL 29, 2016 UL 60079-6 8
