oSIST prEN IEC 60079-14:2023
(Main)Electrical installation design, selection and installation of equipment, including initial inspection
Electrical installation design, selection and installation of equipment, including initial inspection
Projektierung, Auswahl und Errichtung elektrischer Anlagen
Conception, sélection et construction des installations électriques
Načrtovanje, izbira in namestitev električnih inštalacij, vključno z začetnim pregledom
General Information
Relations
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.
---------------------- Page: 1 ----------------------
oSIST prEN IEC 60079-14:2023
---------------------- Page: 2 ----------------------
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
Copyright © 2023 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
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.
---------------------- Page: 3 ----------------------
oSIST prEN IEC 60079-14:2023
31J/355/CDV – 2 – IEC CDV IEC 60079-14 © IEC:2023
NOTE FROM TC/SC OFFICERS:
---------------------- Page: 4 ----------------------
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
---------------------- Page: 5 ----------------------
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
---------------------- Page: 6 ----------------------
oSIST prEN IEC 60079-14:2023
IEC CDV 60079-14 © IEC:2023 – 5 – 31J/355/CDV
98 6.18.3 Action to be taken on failure of pressurization . 63
99 6.19 Pressurized rooms . 67
100 6.20 Analyser houses . 67
101 6.21 Type of Protection “q” – Powder filling . 67
102 7 Selection . 68
103 7.1 General . 68
104 7.2 Assurance of conformity of Ex Equipment . 68
105 7.2.1 Ex Equipment based on IEC standards . 68
106 7.2.2 Ex Equipment not based on IEC standards . 68
107 7.2.3 Selection of used or repaired Ex Equipment . 68
108 7.3 Selection of Ex Equipment . 68
109 7.3.1 Information requirements . 68
110 7.3.2 External influences . 69
111 7.3.3 Selection of radiating equipment . 70
112 7.3.4 Selection of ultrasonic equipment . 71
113 7.3.5 Selection for pollution degree . 71
114 7.3.6 Selection for specific process hazards . 72
115 7.3.7 Selection of Ex Equipment according to EPLs . 72
116 7.3.8 Selection according to equipment grouping . 75
117 7.3.9 Selection according to the ignition temperature of the gas, vapour or
118 dust . 75
119 7.3.10 Selection according to the temperature range . 78
120 7.4 Selection of cables. 78
121 7.4.1 General . 78
122 7.4.2 Cables for direct entries into flameproof enclosures . 78
123 7.4.3 Cables for direct entries into restricted breathing enclosures . 79
124 7.4.4 Resistance to flame propagation or flame spread . 79
125 7.4.5 UV or solar radiation . 79
126 7.4.6 Non-flexible cables for fixed equipment . 79
127 7.4.7 Flexible cables for fixed and transportable equipment (excluding
128 intrinsic safety circuits) . 79
129 7.4.8 Flexible cables for use for portable equipment . 80
130 7.4.9 Cables for intrinsic safety circuits . 80
131 7.4.10 Single insulated wires (excluding intrinsically safe circuits) . 80
132 7.4.11 Aluminium conductors . 80
133 7.5 Selection of entry devices and other fittings . 80
134 7.5.1 Cable entry devices . 80
135 7.5.2 Adapters and Blanking Elements . 81
136 7.5.3 Breathing and draining devices . 81
137 7.5.4 Entry devices for fibre optic cables . 82
138 7.5.5 Other entry devices . 82
139 7.5.6 Cable entry device for Type of Protection “d” . 82
140 7.5.7 Cable entry device for Type of Protection “nR” . 83
141 7.6 Conduits . 84
142 7.6.1 Group II . 84
143 7.6.2 Group III . 84
144 7.7 Luminaires and lamps . 85
145 7.7.1 Luminaires . 85
146 7.7.2 Lamps . 85
---------------------- Page: 7 ----------------------
oSIST prEN IEC 60079-14:2023
31J/355/CDV – 6 – IEC CDV IEC 60079-14 © IEC:2023
147 7.8 Rotating electrical machines . 85
148 8 Installation of equipment . 86
149 8.1 General . 86
150 8.2 Cables and wiring systems. 86
151 8.2.1 Avoidance of damage . 86
152 8.2.2 Equipotential bonding connections. 86
153 8.2.3 Terminations. 86
154 8.2.4 Penetrations in structures . 87
155 8.2.5 Passage and collection of flammables . 87
156 8.2.6 Group III ‒ Accumulation of dust . 87
157 8.2.7 Jointing. 87
158 8.3 Entry devices and other fittings . 88
159 8.3.1 General . 88
160 8.3.2 Cable entry devices . 88
161 8.3.3 Additional entries . 90
162 8.3.4 Unused openings . 90
163 8.4 Conduit systems . 91
164 8.4.1 General . 91
165 8.4.2 Group II . 92
166 8.4.3 Group III . 92
167 8.4.4 Additional requirements for flameproof sealing devices for conduit . 92
168 8.5 Electrical heating systems . 93
169 8.5.1 General . 93
170 8.5.2 Trace heating system . 93
171 8.6 Protective coating of Ex Equipment . 93
172 8.7 Type of Protection “d” – Flameproof enclosures . 93
173 8.7.1 General . 93
174 8.7.2 Solid obstacles . 93
175 8.7.3 Protection of flamepaths . 94
176 8.8 Types of Protection “e” and “nA” . 94
177 8.8.1 Conductor terminations . 94
178 8.8.2 Combinations of terminals and conductors for general connection and
179 junction boxes . 95
180 8.9 Types of Protection “i” – Intrinsic safety . 95
181 8.9.1 Earthing of conducting screens . 95
182 8.9.2 Cable armour bonding . 95
183 8.9.3 Installation of cables and wiring . 95
184 8.10 Type of Protection “nR” . 96
185 8.11 Type of Protection “o”– Liquid immersion (formerly Oil immersion) . 96
186 9 Initial inspection . 96
187 Annex A (normative) Knowledge, skills and competencies of designers, electricians
188 and technicians . 98
189 A.1 Scope . 98
190 A.2 Knowledge and skills . 98
191 A.2.1 Designers . 98
192 A.2.2 Electricians and technicians . 98
193 A.3 Competencies . 99
194 A.3.1 General . 99
195 A.3.2 Designers . 99
---------------------- Page: 8 ----------------------
oSIST prEN IEC 60079-14:2023
IEC CDV 60079-14 © IEC:2023 – 7 – 31J/355/CDV
196 A.3.3 Electricians and technicians . 99
197 A.4 Assessment . 99
198 Annex B (informative) Safe work procedure guidelines for explosive gas atmosphe res . 100
199 Annex C (normative) Pressure testing for cables. 101
200 C.1 General . 101
201 C.2 Test apparatus . 101
202 C.3 Test method . 101
203 C.4 Test report . 102
204 Annex D (normative) Potential stator winding discharge hazard assessment – Ignition
205 risk factors . 104
206 Annex E (normative) Verification of intrinsically safe circuits with more than one
207 associated apparatus with linear current/voltage characteristics . 105
208 E.1 General . 105
209 E.2 Intrinsic safety with Level of Protection “ib” . 105
210 E.3 Intrinsic safety with Level of Protection “ic” . 105
211 Annex F (informative) Methods of determining the maximum system voltages and
212 currents in intrinsically safe circuits with more than one associated apparatus with
213 linear current and voltage characteristics . 106
214 F.1 Intrinsically safe circuits with linear current and voltage characteristics . 106
215 F.2 Intrinsically safe circuits with non-linear current or voltage characteristics . 108
216 Annex G (informative) Determination of intrinsic safety cable parameters . 109
217 G.1 Measurements . 109
218 G.2 Cables carrying more than one intrinsically safe circuit . 109
219 G.2.1 General . 109
220 G.2.2 Type A cables . 109
221 G.2.3 Type B cables . 110
222
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.