1、BSI Standards PublicationExplosive atmospheresPart 0: Equipment General requirementsIncorporating corrigenda November 2012 and December 2013BS EN 60079-0:2012+A11:2013BS EN 60079-0:2012+A11:2013Incorporating corrigenda November 2012, December 2013 and October 2014BS EN 60079-0:2012+A11:2013National
2、forewordThis British Standard is the UK implementation of EN 60079-0:2012+A11:2013. It is derived from IEC 60079-0:2011,incorporating corrigenda November 2012 and December 2013. Itsupersedes BS EN 60079-0:2012, which is withdrawn.The CENELEC common modifications have been implemented at theappropria
3、te places in the text. The start and finish of each commonmodification is indicated in the text by tags . The commonmodifications introduced by CENELEC amendment A11 are indicatedby hi.The UK participation in its preparation was entrusted to TechnicalCommittee EXL/31, Equipment for explosive atmosph
4、eres.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Sta
5、ndards Limited 2014ISBN 978 0 580 85492 7ICS 13.230; 29.260.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 30 September 2012.Amendments/corrigenda issued since
6、publicationDate Text affected30 June 2013 30 April 2014 Implementation of IEC corrigendum November 2012: Subclause 9.3.3 modifiedImplementation of IEC corrigendum December2013: Subclauses 7.1.2.2 and 7.1.2.3 modified.Implementation of CENELEC amendment A11:2013. Implementation of IEC Interpretation
7、SheetNovember 2013 which is appended at the end ofthis document.BRITISH STANDARDBS EN 60079-0:2012+A11:2013 BRITISH STANDARD8386 6, December 2013 andOctob r 2014. It supersedes BS EN 60079-0:2012, hich is withdrawn.i c er. . . ified. Im-plementation of CEN LEC amendment A11:2013.I r r t ti eetin Nat
8、ion l An ex NA31 December 2014 Implementation of IEC Interpretation SheetOctober 2014 in National Annex NBTC 31/Publication 60079-0 (2011), sixth edition/I-SH 01 EXPLOSIVE ATMOSPHERES Part 0: Equipment General requirements INTERPRETATION SHEET 1 This interpretation sheet has been prepared by technic
9、al committee 31: Equipment for explosive atmospheres, of IEC. The text of this interpretation sheet is based on the following documents: ISH Report on voting 31/1085/ISH 31/1095/RVD Full information on the voting for the approval of this interpretation sheet can be found in the report on voting indi
10、cated in the above table. _ Interpretation of Annex A Questions: Is the torque used for the tensile test of A.3.1.4 required to be the same torque as the initial torque determined in A.3.1.1? At what point in the testing sequence is the thermal endurance to heat test conducted? Interpretation: In A.
11、3.1.1, a torque is applied to either the screws of a flanged compression element or the nut of a screwed compression element to compress the sealing ring to secure the mandrel. A tensile force is then applied to the mandrel to confirm the securement. The tensile force is applied for not less than 6
12、h. The test is carried out at an ambient temperature of (20 5) C. The torque value needed for clamping to be assured by the sealing ring is acceptable if the slippage of the mandrel or cable sample as a result of the tensile force is not more than 6 mm. Subsequently, either the complete cable gland
13、and mandrel assembly used for the determination described above, or a new sample prepared using the same torque values, is then to be subjected to the thermal endurance tests. The maximum service temperature is considered to be 75 C unless otherwise specified by the manufacturer. NOTE 1 The 75 C ser
14、vice temperature is the median of the branching point and entry point temperatures. NOTE 2 Cable glands employing only metallic sealing rings and metallic parts do not require thermal endurance tests. The subsequent test conditions and acceptance criteria are given in A.3.1.4. Prior to the applicati
15、on of the tensile force, the gland may be re-tightened in accordance with the manufacturers instructions. BS EN 60079-0:2012+A11:2013 IEC 60079-0 2011 106 November 2013 ICS 29.260.20 NOTE The torque applied to the screws or nut during retightening is not required to be the same as the initial torque
16、 applied in A.3.1.1. In A.3.1.5, the “value needed to prevent slipping” is the torque required for A.3.1.4. It is intended that this interpretation will be introduced in IEC 60079-0 Edition 7 and therefore an Interpretation Sheet will not be required for this or future editions. BS EN 60079-0:2012+A
17、11:2013 IEC 60079-0 2011 107 National Annex NA (Informative)November 2013 ICS 29.260.20 NOTE The torque applied to the screws or nut during retightening is not required to be the same as the initial torque applied in A.3.1.1. In A.3.1.5, the “value needed to prevent slipping” is the torque required
18、for A.3.1.4. It is intended that this interpretation will be introduced in IEC 60079-0 Edition 7 and therefore an Interpretation Sheet will not be required for this or future editions. BS EN 60079-0:2012+A11:2013 IEC 60079-0 2011 107 TC 31/Publication 60079-0 (2011), sixth edition/I-SH 01 EXPLOSIVE
19、ATMOSPHERES Part 0: Equipment General requirements INTERPRETATION SHEET 1 This interpretation sheet has been prepared by technical committee 31: Equipment for explosive atmospheres, of IEC. The text of this interpretation sheet is based on the following documents: ISH Report on voting 31/1085/ISH 31
20、/1095/RVD Full information on the voting for the approval of this interpretation sheet can be found in the report on voting indicated in the above table. _ Interpretation of Annex A Questions: Is the torque used for the tensile test of A.3.1.4 required to be the same torque as the initial torque det
21、ermined in A.3.1.1? At what point in the testing sequence is the thermal endurance to heat test conducted? Interpretation: In A.3.1.1, a torque is applied to either the screws of a flanged compression element or the nut of a screwed compression element to compress the sealing ring to secure the mand
22、rel. A tensile force is then applied to the mandrel to confirm the securement. The tensile force is applied for not less than 6 h. The test is carried out at an ambient temperature of (20 5) C. The torque value needed for clamping to be assured by the sealing ring is acceptable if the slippage of th
23、e mandrel or cable sample as a result of the tensile force is not more than 6 mm. Subsequently, either the complete cable gland and mandrel assembly used for the determination described above, or a new sample prepared using the same torque values, is then to be subjected to the thermal endurance tes
24、ts. The maximum service temperature is considered to be 75 C unless otherwise specified by the manufacturer. NOTE 1 The 75 C service temperature is the median of the branching point and entry point temperatures. NOTE 2 Cable glands employing only metallic sealing rings and metallic parts do not requ
25、ire thermal endurance tests. The subsequent test conditions and acceptance criteria are given in A.3.1.4. Prior to the application of the tensile force, the gland may be re-tightened in accordance with the manufacturers instructions. BS EN 60079-0:2012+A11:2013 IEC 60079-0 2011 106 November 2013 ICS
26、 29.260.20 NOTE The torque applied to the screws or nut during retightening is not required to be the same as the initial torque applied in A.3.1.1. In A.3.1.5, the “value needed to prevent slipping” is the torque required for A.3.1.4. It is intended that this interpretation will be introduced in IE
27、C 60079-0 Edition 7 and therefore an Interpretation Sheet will not be required for this or future editions. BS EN 60079-0:2012+A11:2013 IEC 60079-0 2011 107 October 2014 ICS 29.260.20 TC 31/IEC 60079-0 (2011), sixth edition/I-SH 02 EXPLOSIVE ATMOSPHERES Part 0: Equipment General requirements INTERPR
28、ETATION SHEET 2 This interpretation sheet has been prepared by IEC technical committee 31: Equipment for explosive atmospheres. The text of this interpretation sheet is based on the following documents: ISH Report on voting 31/1132/ISH 31/1153/RVISH Full information on the voting for the approval of
29、 this interpretation sheet can be found in the report on voting indicated 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 60079-0:2011 (6thedition ) was requested, in order to clarify the significance of the cha
30、nges with respect to the 5thedition. Question What are the minor editorial, 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 60079-0, E
31、dition 5, 2007-10 (Including Corrigendum No.1 and Interpretation Sheet I-SH 01) and IEC 60079-0, Edition 6, 2011-06 are as listed below: October 2014 ICS 29.260.20 TC 31/IEC 60079-0 (2011), sixth edition/I-SH 02 EXPLOSIVE ATMOSPHERES Part 0: Equipment General requirements INTERPRETATION SHEET 2 his
32、interpretation sheet has b n prepared by IEC technical committee 31: Equipment for explosive atmospheres. The text of this interpretation sheet is based on the following documents: ISH Report on voting 31/1132/ISH 31/1153/RVISH Full information on the voting for the approval of this interpretation s
33、heet can be found in the report on voting indicated 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 60079-0:2011 (6thedition ) was requested, in order to clarify the significance of the changes with respect to t
34、he 5thedition. Question What are the minor editorial, extensions, and major technical changes of the 6thedition with respect to the 5thedition? Answer The following table shows the significance of the c anges. The significance of the changes between IEC Standard, IEC 60079-0, Edition 5, 2007-10 (Inc
35、luding Corrigendum No.1 and Interpretation Sheet I-SH 01) and IEC 60079-0, Edition 6, 2011-06 are as listed below: November 2013 NOTE The torque applied to the screws or nut during retightening is not required to be the same as the initial torque applied in A.3.1.1. In A.3.1.5, the “value needed to
36、prevent slipping” is the torque required for A.3.1.4. It is intended that this interpretation will be introduced in IEC 60079-0 Edition 7 and therefore an Interpretation Sheet will not be required for this or future editions. BS EN 60079-0:2012+A11:2013 IEC 60079-0 2011 107 National Annex NB (Inform
37、ative)October 2014 ICS 29.260.20 Type Explanation of the significance of the changes Clause Minor and editorial changes Extension Major technical changes Expansion of material specification data for plastics and elastomers, including UV resistance 7.1.2 x Addition of alternative qualification for O-
38、rings 7.2.3 x Addition of alternative criteria for surface resistance 7.4.2 a) x Addition of alternative breakdown voltage limit for non-metallic layers applied to metallic enclosures 7.4.2 c) x Expansion of “X” marking options for non-metallic enclosure materials not meeting basic electrostatic req
39、uirements 7.4.2 d) 7.4.2 e) x Clarification that non-metallic enclosure requirements also apply to painted or coated metal enclosures 7.4.3 x Clarification of test to determine capacitance of accessible metal parts with reduction in acceptable capacitance 7.5 Table 9 C1 Addition of limits on zirconi
40、um content for Group III and Group II (Gb only) enclosures 8.3 8.4 x Introduction of “X” marking for Group III enclosures not complying with basic material requirements, similar to that existing for Group II 8.4 x Addition of button-head cap screws to permitted “Special Fasteners” 9.2 x Reference fo
41、r protective earthing (PE) requirements for electrical machines to IEC 60034 1 15.3 x Addition of requirements for ventilating fans 17.1.5 C2 Addition of requirement for temperature rating of bearing lubricants 17.2 x Addition of alternative construction for disconnectors 18.2 x Removal of voltage l
42、imits on plugs and sockets 20.2 x Addition of test requirements for arc-quenching test on plugs and sockets 20.2 C3 Additional information on cell voltages 23.3 Table 12 C4 Revision to impact test of glass parts 26.4.2 x Revision to impact test procedure to address “bounce” of impact head 26.4.2 x C
43、larification of the test requirements for “service” and “surface” temperature 26.5.1.2 26.5.1.3 x Clarification of temperature rise tests for converter-fed motors 26.5.1.3 x Addition of alternative test method for thermal endurance 26.8 Table 15 x Removal of “charging test” and addition of note prov
44、iding guidance Formerly 26.14 C5 Clarification of test for the measurement of capacitance, revision of maximum capacitance 26.14 C6 Addition of tests for ventilating fans 26.15 C2 Addition of alternative o-ring testing 26.16 x Addition of a “Schedule of Limitations” to 28.2 x TC 31/Publication 60079
45、-0 (2011), sixth edition/I-SH 01 EXPLOSIVE ATMOSPHERES Part 0: Equipment General requirements INTERPRETATION SHEET 1 This interpretation sheet has been prepared by technical committee 31: Equipment for explosive atmospheres, of IEC. The text of this interpretation sheet is based on the following doc
46、uments: ISH Report on voting 31/1085/ISH 31/1095/RVD Full information on the voting for the approval of this interpretation sheet can be found in the report on voting indicated in the above table. _ Interpretation of Annex A Questions: Is the torque used for the tensile test of A.3.1.4 required to b
47、e the same torque as the initial torque determined in A.3.1.1? At what point in the testing sequence is the thermal endurance to heat test conducted? Interpretation: In A.3.1.1, a torque is applied to either the screws of a flanged compression element or the nut of a screwed compression element to c
48、ompress the sealing ring to secure the mandrel. A tensile force is then applied to the mandrel to confirm the securement. The tensile force is applied for not less than 6 h. The test is carried out at an ambient temperature of (20 5) C. The torque value needed for clamping to be assured by the seali
49、ng ring is acceptable if the slippage of the mandrel or cable sample as a result of the tensile force is not more than 6 mm. Subsequently, either the complete cable gland and mandrel assembly used for the determination described above, or a new sample prepared using the same torque values, is then to be subjected to the thermal endurance tests. The maximum service temperature is considered to be 75 C unless otherwise specified by the manufacturer. NOTE 1 The 75 C service
