1、 INTERNATIONAL STANDARD IECCEINORME INTERNATIONALE60079-1Sixth editionSixime dition2007-04Explosive atmospheres Part 1: Equipment protection by flameproof enclosures “d” Atmosphres explosives Partie 1: Protection du matriel par enveloppes antidflagrantes d Reference number Numro de rfrence IEC/CEI 6
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14、 contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 -,-,- INTERNATIONAL STANDARD IECCEINORME INTERNATIONALE60079-1Sixth editionSixime dition2007-04Explosive atmospheres Part 1: Equipment protection by flameproof enclosures “d” Atmosphres explosives Partie 1: Protection du m
15、atriel par enveloppes antidflagrantes d For price, see current cataloguePour prix, voir catalogue en vigueur PRICE CODE CODE PRIX XB Commission Electrotechnique InternationaleInternational Electrotechnical Commission -,-,- 2 60079-1 IEC:2007 CONTENTS FOREWORD.5 1 Scope.7 2 Normative references .7 3
16、Terms and definitions .8 4 Equipment grouping and temperature classification .10 5 Flameproof joints.10 5.1 General requirements.10 5.2 Non-threaded joints.11 5.3 Threaded joints .17 5.4 Gaskets (including O-rings) .18 5.5 Equipment using capillaries.19 6 Cemented joints .20 6.1 General .20 6.2 Mech
17、anical strength .20 6.3 Width of cemented joints .20 7 Operating rods .20 8 Supplementary requirements for shafts and bearings .20 8.1 Joints of shafts.20 8.2 Bearings.23 9 Light-transmitting parts.23 10 Breathing and draining devices which form part of a flameproof enclosure .24 10.1 Openings for b
18、reathing or draining .24 10.2 Composition limits .24 10.3 Dimensions .24 10.4 Elements with measurable paths .24 10.5 Elements with non-measurable paths .24 10.6 Removable devices .25 10.7 Mounting arrangements of the elements.25 10.8 Mechanical strength .25 10.9 Breathing devices and draining devic
19、es when used as Ex components.25 11 Fasteners, associated holes and blanking elements .28 12 Materials and mechanical strength of enclosures Materials inside the enclosures.30 13 Entries for flameproof enclosures .31 13.1 Cable glands .31 13.2 Conduit sealing devices.32 13.3 Plugs and sockets and ca
20、ble couplers.32 13.4 Bushings .33 14 Verification and tests.33 15 Type tests .34 15.1 Tests of ability of the enclosure to withstand pressure.35 15.2 Test for non-transmission of an internal ignition .38 15.3 (Reserved for future use) .41 15.4 Tests of flameproof enclosures with breathing and draini
21、ng devices.42 60079-1 IEC:2007 3 16 Routine tests .44 17 Switchgear for group I .45 17.1 Means of isolation .45 17.2 Doors or covers.45 18 Lampholders and Iamp caps.46 18.1 Device preventing lamps working loose .46 18.2 Holders and caps for lamps with cylindrical caps .46 18.3 Holders for lamps with
22、 threaded caps.46 19 Non-metallic enclosures and non-metallic parts of enclosures .46 19.1 (Reserved for future use) .47 19.2 Special constructional requirements .47 19.3 Supplementary requirements for type tests.47 20 Marking .48 20.1 General .48 20.2 Caution and warning markings .48 20.3 Informati
23、ve markings .48 Annex A (normative) Additional requirements for crimped ribbon elements and multiple screen elements of breathing and draining devices .49 Annex B (normative) Additional requirements for elements, with non-measurable paths, of breathing and draining devices .50 B.1 Sintered metal ele
24、ments.50 B.2 Pressed metal wire elements.50 B.3 Metal foam elements .51 Annex C (normative) Additional requirements for flameproof entry devices .52 C.1 General .52 C.2 Constructional requirements.52 C.3 Type tests .54 Annex D (normative) Empty flameproof enclosures as Ex components.59 D.1 General .
25、59 D.2 Introductory remarks .59 D.3 Ex component enclosure requirements .59 D.4 Utilization of an Ex component enclosure certificate to prepare an equipment certificate .61 Annex E (normative) Cells and batteries used in flameproof “d” enclosures .62 E.1 Introductory remarks .62 E.2 Acceptable elect
26、rochemical systems .62 E.3 General requirements for cells (or batteries) inside flameproof enclosures .63 E.4 Arrangement of safety devices .63 E.5 Recharging of secondary cells inside flameproof enclosures .65 E.6 Rating of protection diodes and reliability of protection devices .66 Annex F (informative) Mechanical properties for screws and nuts .67 Annex G (informative) Introduction of an alternative risk assessment method encompassing “equipment protection levels for Ex equipment .68 G.0 Introduction .68 G.1 Historical background.68 G.2 General .
