1、BSI Standards PublicationBS EN 60079-11:2012Explosive atmospheresPart 11: Equipment protection by intrinsicsafety “i“BS EN 60079-11:2012Incorporating corrigendum January 2012Incorporating corrigenda January 2012 and November 4BS EN 60079-11:2012 BRITISH STANDARDNational forewordThis British Standard
2、 is the UK implementation of EN 60079-11:2012.It is identical to IEC 60079-11:2011. It supersedes BS EN60079-11:2007 and BS EN 61241-11:2006 which are withdrawn. Italso partially supersedes BS EN BS EN 60079-27:2008.The UK participation in its preparation was entrusted to TechnicalCommittee EXL/31/2
3、, Intrinsically safe apparatus.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution
4、2012ISBN 978 0 580 61543 6ICS 13.230; 29.260.20 Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2012.Amendments issued since publicationDate Text affecte
5、dBS EN 60079-11:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 60079-11:2012.It is identical to IEC 60079-11:2011. It supersedes BS EN60079-11:2007 and BS EN 61241-11:2006 which are withdrawn. Italso partially supersedes BS EN BS EN 60079-27:2008.The UK pa
6、rticipation in its preparation was entrusted to TechnicalCommittee EXL/31/2, Intrinsically safe apparatus.A list of organizations represented on this committee can beobtained on res issued since publicationDate Text affectedBS EN 60079-11:2012 BRITISH STANDARDNational forewordThis British Standard i
7、s the UK implementation of EN 60079-11:2012.It is identical to IEC 60079-11:2011. It supersedes BS EN60079-11:2007 and BS EN 61241-11:2006 which are withdrawn. Italso partially supersedes BS EN BS EN 60079-27:2008.The UK participation in its preparation was entrusted to TechnicalCommittee EXL/31/2,
8、I trinsically safe apparatus.A list of organizations represented on this committee can beobtained on request to its secre ary.This publication does not purport to include all the necessaryprovisions of a contract. Use s a e responsible for its correctappl cation.itish Standard is the UK implementa i
9、on of EN 60079-11:2012. It isidentical o IEC 60079-11:20 , incorporating corrigendum January 2012.It supersedes BS EN 60079-11: 007 and BS EN 61241-11:2006 which arewithdrawn. It als partially supersedes BS EN 60079-27:2008.e start nd finish of text introduc d or lt red by corrig ndumis indicat d in
10、 the text by tags. Text altered by IEC corrigendumJan/corrigenda iss ed since publicationDate Text affected31 August 2012 Implementation of IEC corrigendum January 2012fduary 2012 is i dicat d in the text by .e n i s r r ti n as entrusted to Technicale , Equipment for explosive tmo pheres.s d e n t
11、s n t t e l e . s e e r s The British Standards Institution 2012ISBN 978 0 580 61543 6Amendments issued since publicationDate Text affectedBS EN 60079-11:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 60079-11:2012.It is identical to IEC 60079-11:2011. It
12、supersedes BS EN60079-11:2007 and BS EN 61241-11:2006 which are withdrawn. Ital o partially supersedes BS EN BS EN 60079-27:2008.The UK participation in its preparation was entrusted to TechnicalCommittee EXL/31/2, I trinsically safe apparatus.A list of organizations represented on this committee ca
13、n beobtained on res issued since publicationDate Text affectedBS EN 60079-11:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 60079-11:2012.It is identical to IEC 60079-11:2011. It supersedes BS EN60079-11:2007 and BS EN 61241-11:2006 which are withdrawn. It
14、also par ially supersedes BS EN BS EN 60079-27:2008.The UK participation in its preparation was entrusted to TechnicalCommittee EXL/31/2, I trinsically safe apparatus.A list of organizations represented on this committee can beobtained on request to its secre ary.This publication does not purport to
15、 include all the necessaryprovisions of a contract. Use s a e responsible for its correctappl cation.itish Standard is the UK implementa ion of EN 60079-11:2012. It isidentical o IEC 60079-11:20 , incorpora ing c rrigendum January 2012.supersedes BS EN 60 79-1 : 0 7 and BS EN 61241-11:2006 which are
16、withdrawn. It als partially supersedes 0079-27: 8.e start nd finish of text introduc d or lt red by corrig ndumis indica d in the text by ags. Text alt red by IEC corrigendumJanBS EN 60079-11:2012 BRITISH STANDARDDate Text affected31 August 2012 Implementation of IEC corrigendum January 201230 Novem
17、ber 2014 Implementation of IEC Interpretation Sheet October 2014 in National Annex NA The British Standards Institution 2014. Published by BSI Standards Limited 2014ISBN 978 0 580 88385 9This British Standard is the UK implementation of EN 60079-11:2012. It is identical to IEC 60079-11:2011, incorpo
18、rating corrigendum January 2012. It supersedes BS EN 60079-11:2007 and BS EN 61241-11:2006 which are withdrawn. It also partially supersedes BS EN 60079-27:2008, specifically Clause 4, Apparatus requirements.BS EN 60079-11:2012 BRITISH STANDARDNational forewordThis British Standard is the UK impleme
19、ntation of EN 60079-11:2012.It is identical to IEC 60079-11:2011. It supersedes BS EN60079-11:2007 and BS EN 61241-11:2006 which are withdrawn. Italso partially supersedes BS EN BS EN 60079-27:2008.The UK participation in its preparation was entrusted to TechnicalCommittee EXL/31/2, Intrinsically sa
20、fe apparatus.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012ISBN 978 0 580
21、 61543 6ICS 29.260.20 Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2012.Amendments issued since publicationDate Text affectedBS EN 60079-11:2012 BRITI
22、SH STANDARDNational forewordThis British Standard is the UK implementation of EN 60079-11:2012.It is identical to IEC 60079-11:2011. It supersedes BS EN60079-11:2007 and BS EN 61241-11:2006 which are withdrawn. Italso partially supersedes BS EN BS EN 60079-27:2008.The UK participation in its prepara
23、tion was entrusted to TechnicalCommittee EXL/31/2, Intrinsically safe apparatus.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its corre
24、ctapplication. The British Standards Institution 2012 ISBN 978 0 580 61543 6 ICS 29.260.20 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2012.Amendme
25、nts issued since publicationDate Text affectedBS EN 60079-11:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 60079-11:2012.It is identical to IEC 60079-11:2011. It supersedes BS EN60079-11:2007 and BS EN 61241-11:2006 which are withdrawn. Italso partially s
26、upersedes BS EN BS EN 60079-27:2008.The UK participation in its preparation was entrusted to TechnicalCommittee EXL/31/2, Intrinsically safe apparatus.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the
27、 necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012 ISBN 978 0 580 61543 6 ICS 29.260.20 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority o
28、f theStandards Policy and Strategy Committee on 31 January 2012.Amendments issued since publicationDate Text affectedThis British Standard is the UK implementation of EN 60079-11:2012. It isidentical to IEC 60079-11:2011, incorporating corrigendum January 2012.It supersedes BS EN 60079-11:2007 and B
29、S EN 61241-11:2006 which arewithdrawn. It also partially supersedes BS EN 60079-27:2008.The start and finish of text introduced or altered by corrigendumis indicated in the text by tags. Text altered by IEC corrigendumJanuary 2012 is indicated in the text by .The UK participation in its preparation
30、was entrusted to TechnicalCommittee EXL/31, Equipment for explosive atmospheres. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 78589 4Amendments/corrigenda issued since publicationDate Text affected31 August 2012 Implementation of IEC corrigendum Januar
31、y 2012October 2014 ICS 29.260.20 SC 31G/IEC 60079-11 (2011), sixth edition/I-SH 01 EXPLOSIVE ATMOSPHERES Part 11: Equipment protection by intrinsic safety “i“ INTERPRETATION SHEET 1 This interpretation sheet has been prepared by subcommittee 31G: Equipment for explosive atmospheres Equipment protect
32、ion by intrinsic safety “i“, of IEC technical committee 31. The text of this interpretation sheet is based on the following documents: ISH Report on voting 31G/235/ISH 31G/238/RVISH Full information on the voting for the approval of this interpretation sheet can be found in the report on voting indi
33、cated in the above table. _ Following decision No 16 of the TC 31 meeting in Melbourne in 2011, the issuing of an Interpretation Sheet for IEC 60079-11:2011 (6thedition ) was requested, in order to clarify the significance of the changes with respect to the 5thedition. Question What are the minor ed
34、itorial, extensions, and major technical changes of the 6thedition with respect to the 5thedition? Answer The following table shows the significance of the changes. The significance of the changes between IEC Standard, IEC 60079-11, Edition 5, 2006-07 and IEC 60079-11, Edition 6, 2011-06 are as list
35、ed below A list of organizations represented on this committee can be The British Standards Institution 2012ISBN 978 0 580 61543 6omStandards Policy and Strategy Committee on 31 August 2012.BS EN 60079-11:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 6007
36、9-11:2012.It is identical to IEC 60079-11:2011. It supersedes BS EN60079-11:2007 and BS EN 61241-11:2006 which are withdrawn. Italso partially supersedes BS EN BS EN 60079-27:2008.The UK participation in its preparation was entrusted to TechnicalCommittee EXL/31/2, Intrinsically safe apparatus.A lis
37、t of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012 ISBN 978 0 580 61543 6 ICS 29.2
38、60.20 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2012.Amendments issued since publicationDate Text affectedBS EN 60079-11:2012 BRITISH STANDARDNat
39、ional forewordThis British Standard is the UK implementation of EN 60079-11:2012.It is identical to IEC 60079-11:2011. It supersedes BS EN60079-11:2007 and BS EN 61241-11:2006 which are withdrawn. Italso partially supersedes BS EN BS EN 60079-27:2008.The UK participation in its preparation was entru
40、sted to TechnicalCommittee EXL/31/2, Intrinsically safe apparatus.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication.
41、 The British Standards Institution 2012 ISBN 978 0 580 61543 6 ICS 29.260.20 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2012.Amendments issued sin
42、ce publicationDate Text affectedThis British Standard is the UK implementation of EN 60079-11:2012. It isidentical to IEC 60079-11:2011, incorpora ing corrigendum January 2012.It supersedes BS EN 60079-1 :2007 and BS EN 61241-11:2006 which arewithdrawn. It also partially supersedes 0079-27: 8.The st
43、art and finish of text introduced or altered by corrigendumis indica ed in the text by ags. Text altered by IEC corrigendumJanuary 2012 is indica ed in the text by .The UK participation in its preparation was entrusted to TechnicalCommittee EXL/31, Equipment for explosive atmospheres. The British St
44、andards Institution 2012. Published by BSI StandardsLimit d 2012ISBN 978 0 580 78589 4Amendments/corrigenda issued since publicationDate Text affected31 August 2012 Implementation of IEC corrigendum January 2012National Annex NA (Informative)BS EN 60079-11:201260079-11 IEC:2011October 2014 ICS 29.26
45、0.20 Significance of changes with respect to IEC 60079-11:2006 Type Significant Changes Clause Minor and editorial changes Extension Major technical changes General: Changes to remove specific clause references to other IEC 60079 standards General x Scope: Expansion to include Group III 1 x Scope: T
46、able 1 updated to include references to both IEC 60079-0 Edition 5 and Edition 6 1 x Normative references: Deletion of IEC 60079-27, and addition of IEC 61158-2 and IEC 62013-1 2 x Terms and definitions: Commonly used definitions moved to IEC 60079-0. Energy limitation definitions moved from IEC 600
47、79-0.New definitions added 3 x Spark ignition compliance: Group III ignition requirements added 5.5 x Temperature for small components for Group I and Group II: Relocated to IEC 60079-0 5.6.2 x Intrinsically safe apparatus and component temperature for Group III 5.6.5 x Enclosures for Group I or Gro
48、up II apparatus 6.1.2 x Apparatus complying with Annex F 6.1.2.3 c) x Enclosures for Group III apparatus 6.1.3 x Requirements for connections and accessories for IS apparatus when located in the non-hazardous area 6.2.5 C1 Separation of conductive parts 6.3.2 x Encapsulation 6.6.1 x Encapsulation us
49、ed for the exclusion of explosive atmospheres 6.6.2 C2 Primary and secondary cells and batteries 7.4.1 x Battery construction 7.4.2 x Level of Protection “ic” 8.1 x Filter capacitors 8.6.2 x Wiring, printed circuit board tracks, and connections 8.8 c) x FISCO apparatus 9.2 x Handlights and caplights 9.3 x Circuits with both inductance and capacitance 10.1.5.2 x Electrolyte leakage test for cells and batteries 10.5.2 x Spark ignition and surface temperature of cells and batteries 10.5.3 x Determination of the acceptability of fuses requiring
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