EN IEC 60079-14:2024
(Main)Explosive atmospheres - Part 14: Electrical installation design, selection and installation of equipment, including initial inspection
Explosive atmospheres - Part 14: Electrical installation design, selection and installation of equipment, including initial inspection
IEC 60079:2024 contains the specific requirements for the design of electrical systems, selection, installation and the required initial inspection of electrical installations of Ex Equipment in, or associated with, explosive atmospheres including requirements for documentation and personnel competency. These requirements are in addition to the requirements for installations in non-hazardous areas. This document applies to all electrical Ex Equipment including fixed, transportable, portable and personal, and installations, permanent or temporary. This document does not apply to: • electrical installations in mines susceptible to firedamp; • inherently explosive situations and dust from explosives or pyrophoric substances (for example explosives manufacturing and processing); • rooms used for medical purposes; • electrical installations in areas where the hazard is due to flammable mist; and • installation of non-electrical Ex Equipment (unless being part of an equipment assembly according IEC TS 60079-46). No account is taken in this document of the toxic hazards that are associated with flammable gases, liquids and dusts in concentrations that are usually very much less than the lower flammable limit. In locations where personnel could be exposed to potentially toxic concentrations of flammable material, appropriate precautions are necessary. Such precautions are outside the scope of this document. This sixth edition cancels and replaces the fifth edition published in 2013. This edition constitutes a technical revision. Edition 6 is a major restructure and introduces a number of technical changes from the previous edition (2013), see Table 1 of the foreword for detailed information.
Explosionsgefährdete Bereiche - Teil 14: Projektierung, Auswahl und Errichtung elektrischer Anlagen
Atmosphères explosives - Partie 14: Conception des installations électriques, sélection et installation des appareils, comprenant l’inspection initiale
IEC 60079-14:2024 contient les exigences spécifiques relatives à la conception de systèmes électriques, à la sélection, à l’installation et à l’inspection initiale exigée des installations électriques des appareils Ex électriques situés dans des atmosphères explosives, ou associées à celles-ci, comprenant les exigences relatives à la documentation et à la compétence du personnel. Ces exigences complètent celles relatives aux installations dans les emplacements non dangereux. Le présent document s’applique à tout appareil Ex électrique, comprenant les appareils fixes, transportables, portables, et personnels, et aux installations, permanentes ou temporaires. Le présent document ne s’applique pas: • aux installations électriques situées dans des mines grisouteuses; • aux situations intrinsèquement explosives et aux poussières issues de substances explosives ou pyrophoriques (la fabrication et le traitement d’explosifs, par exemple); • aux salles utilisées à des fins médicales; • aux installations électriques situées dans des emplacements où le danger provient d’un brouillard inflammable; et • à l’installation d’appareils Ex non électriques (sauf s’ils font partie d’un assemblage d’appareils conformément à l’IEC TS 60079-46). Le présent document ne tient pas compte des dangers toxiques associés aux gaz, liquides et poussières inflammables présents dans des concentrations habituellement bien inférieures à la limite inférieure d’inflammabilité. Sur les sites où le personnel est susceptible d’être exposé à des concentrations potentiellement toxiques de matières inflammables, des précautions appropriées sont nécessaires. Ces précautions ne relèvent pas du domaine d’application du présent document. Cette sixième édition annule et remplace la cinquième édition parue en 2013. Cette édition constitue une révision technique. La 6e édition constitue une restructuration majeure et introduit plusieurs modifications techniques par rapport à l’édition précédente (2013). Le Tableau 1, voir AVANT-PROPOS "Tableau des modifications majeures", est fourni afin de mettre en avant les modifications techniques ainsi que les principales modifications rédactionnelles par rapport à l’édition précédente.
Načrtovanje, izbira in namestitev električnih inštalacij, vključno z začetnim pregledom
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN IEC 60079-14:2023
01-junij-2023
Načrtovanje, izbira in namestitev električnih inštalacij, vključno z začetnim
pregledom
Electrical installation design, selection and installation of equipment, including initial
inspection
Projektierung, Auswahl und Errichtung elektrischer Anlagen
Conception, sélection et construction des installations
électriques
Ta slovenski standard je istoveten z: prEN IEC 60079-14:2023
ICS:
29.260.20 Električni aparati za Electrical apparatus for
eksplozivna ozračja explosive atmospheres
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
oSIST prEN IEC 60079-14:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN IEC 60079-14:2023
oSIST prEN IEC 60079-14:2023
31J/335/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60079-14 ED6
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-04-21 2023-07-14
SUPERSEDES DOCUMENTS:
31J/317/CD, 31J/332/CC
IEC SC 31J : CLASSIFICATION OF HAZARDOUS AREAS AND INSTALLATION REQUIREMENTS
SECRETARIAT: SECRETARY:
Croatia Mr Marino Kelava
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 18,SC 61D
Other TC/SCs are requested to indicate their interest, if any, in
this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of
• any relevant patent rights of which they are aware and to provide supporting documentation ,
• any relevant “in some countries” clauses to be included should this proposal proceed. Recipients are remin ded
that the enquiry stage is the final stage for submitting "in some countries" clauses. See AC/22/2007.
TITLE:
Electrical installation design, selection and installation of equipment, including initial inspection
PROPOSED STABILITY DATE: 2028
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.
oSIST prEN IEC 60079-14:2023
31J/355/CDV – 2 – IEC CDV IEC 60079-14 © IEC:2023
NOTE FROM TC/SC OFFICERS:
oSIST prEN IEC 60079-14:2023
IEC CDV 60079-14 © IEC:2023 – 3 – 31J/355/CDV
1 FOREWORD . 10
2 INTRODUCTION . 16
3 1 Scope . 19
4 2 Normative references . 19
5 3 Terms and definitions . 20
6 4 General . 28
7 4.1 General requirements . 28
8 4.1.1 Zones and Equipment Protection Levels . 28
9 4.1.2 Requirements for all Ex Equipment . 29
10 4.1.3 Electrical ratings . 29
11 4.1.4 Controls for exceptional circumstances . 30
12 4.2 Conditions of Use . 30
13 4.2.1 General . 30
14 4.2.2 Specific Conditions of Use . 30
15 4.2.3 Use of Ex Components . 31
16 4.3 Ignition sources that have an influence on the installation . 31
17 4.3.1 General . 31
18 4.3.2 Static electricity . 31
19 4.3.3 Optical radiation . 31
20 4.3.4 Lightning protection . 31
21 4.3.5 Radio frequency received and transmitted in hazardous areas . 31
22 4.3.6 RFID tags . 32
23 5 Documentation . 33
24 5.1 General . 33
25 5.2 Site information . 33
26 5.3 Ex Equipment information . 33
27 5.4 Installation information . 33
28 5.5 Personnel competency . 34
29 6 Design . 35
30 6.1 General . 35
31 6.2 Protection from dangerous (incendive) sparking . 35
32 6.2.1 Equipment above hazardous areas . 35
33 6.2.2 Circuits traversing a hazardous area. 35
34 6.2.3 Construction materials . 35
35 6.2.4 Danger from live parts . 36
36 6.2.5 Danger from exposed and extraneous conductive parts . 36
37 6.2.6 Potential equalization . 37
38 6.2.7 Cathodically protected metallic parts . 38
39 6.3 Electrical protection . 39
40 6.4 Switching-off . 39
41 6.5 Electrical isolation . 40
42 6.6 Cables . 40
43 6.6.1 External surface temperature . 40
44 6.6.2 Cables subjected to thermal insulation . 40
45 6.6.3 Overhead wiring . 40
46 6.7 Electrical machines . 41
47 6.7.1 General . 41
oSIST prEN IEC 60079-14:2023
31J/355/CDV – 4 – IEC CDV IEC 60079-14 © IEC:2023
48 6.7.2 Electrical machines with Type of Protection “d” – Flameproof
49 enclosures, “p” – Pressurized enclosures and “t” – Protection by
50 enclosures . 42
51 6.7.3 Electrical machines with Level of Protection “eb” – Increased safety . 42
52 6.7.4 Electrical machines with Level of Protection “ec” and Type of Protection
53 “nA” . 44
54 6.7.5 Switching electrical machines above 1 kV a.c. . 45
55 6.7.6 Overvoltages resulting from switching operations . 46
56 6.7.7 Prevention of falling bodies. 46
57 6.8 Electric heating systems . 46
58 6.8.1 General . 46
59 6.8.2 Earth fault protection . 46
60 6.8.3 Temperature monitoring . 47
61 6.8.4 Limiting temperature . 47
62 6.8.5 Temperature safety device . 48
63 6.9 Plugs, socket outlets and couplers . 48
64 6.9.1 Specific requirements for explosive dust atmospheres . 48
65 6.9.2 Location . 49
66 6.10 Cells and batteries . 49
67 6.10.1 Charging of secondary cells and batteries . 49
68 6.10.2 Ventilation . 49
69 6.11 Gas detection systems . 49
70 6.12 Type of Protection “d” – Flameproof enclosures . 49
71 6.13 Type of Protection “e” – Increased Safety . 49
72 6.13.1 Maximum dissipated power of junction boxes . 49
73 6.13.2 Maximum number of conductors . 50
74 6.14 Type of Protection “i” – Intrinsic safety . 51
75 6.14.1 General . 51
76 6.14.2 Cables . 52
77 6.14.3 Verification of intrinsically safe circuits . 52
78 6.14.4 Earthing of conducting screens . 54
79 6.14.5 Cable armour bonding . 55
80 6.14.6 Marking of cables . 55
81 6.14.7 Cables carrying more than one intrinsically safe circuit . 55
82 6.14.8 Types of cables carrying more than one intrinsically safe circuit and
83 applicable fault considerations . 56
84 6.14.9 Earthing of intrinsically safe circuits . 56
85 6.14.10 Installations to meet the requirements of EPL “Ga” or “Da” . 57
86 6.14.11 Simple apparatus . 59
87 6.14.12 Junction boxes . 60
88 6.14.13 Plugs and sockets used for external connections . 61
89 6.14.14 Special applications . 61
90 6.15 Type of Protection “m” – Encapsulation . 61
91 6.16 Type of Protection “n” . 61
92 6.16.1 General . 61
93 6.16.2 Type of Protection “nR”. 61
94 6.17 Type of Protection “o”– Liquid immersion (former Oil immersion) . 62
95 6.18 Type of Protection “p” . 62
96 6.18.1 General . 62
97 6.18.2 Ducting . 62
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