oSIST prEN IEC 60079-45:2024
(Main)Explosive atmospheres - Part 45: - Electrical ignition systems for internal combustion engines
Explosive atmospheres - Part 45: - Electrical ignition systems for internal combustion engines
IEC 60079-45:2025 is intended to enhance the safety of personnel by providing minimum requirements for electrical ignition systems for spark-ignited reciprocating internal combustion engines, parts of which provide Equipment Protection Level (EPL) Gc.
This document provides minimum construction and test requirements, in addition to manufacturer installation and maintenance recommendations, for the safe operation of ignition systems and components for spark-ignited reciprocating internal combustion engines providing EPL Gc for equipment Group IIB+H2, IIB or IIA. These requirements apply to systems rated for normal operation with secondary voltages less than or equal to 60 kV.
This document applies only to the ignition systems or the individual ignition system components used on reciprocating internal combustion engines that are stationary when in operation and mobile machinery where the internal combustion engine can be potential source of ignition. Applications addressed by the scope of this document include but are not limited to gas compressors, electric power generators, forklift trucks, and pumps.
This document does not apply to:
a) Engine ignition systems that utilize a breaker point or magneto type ignition systems as these would not be suitable for use in a hazardous area.
b) Road vehicles.
c) Low voltage parts and electrical installation that are not included in the ignition system, such as various sensors and thermocouples, throttle actuator(s), fuel control valve(s), human machine interface (HMI), respective harness and wiring and all the other items that might belong to the integrated control system besides the ignition system.
This document supplements and modifies the general requirements of IEC 60079-0 and the requirements of ISO/IEC 80079-41. Where a requirement of this document conflicts with IEC 60079 0 or ISO/IEC 80079-41, the requirement of this document takes precedence.
Explosionsgefährdete Bereiche – Teil 45: Elektrische Zündsysteme für Verbrennungsmotoren
Atmosphères explosives - Partie 45: - Systèmes d’allumage électrique pour les moteurs à combustion interne
IEC 60079-45:2025 est destinée à améliorer la sécurité du personnel en fournissant des exigences minimales pour les systèmes d’allumage électrique des moteurs alternatifs à combustion interne à allumage par étincelle, dont des parties assurant un niveau de protection de l’appareil (EPL) Gc.
Le présent document fournit des exigences minimales de construction et d’essai, en plus des recommandations d’installation et de maintenance du fabricant, pour un fonctionnement sûr des systèmes d’allumage et des composants des moteurs alternatifs à combustion interne à allumage par étincelle assurant un niveau de protection Gc pour les appareils du Groupe IIB+H2, IIB ou IIA. Ces exigences s’appliquent aux systèmes conçus pour un fonctionnement normal avec des tensions secondaires inférieures ou égales à 60 kV.
Le présent document s’applique uniquement aux systèmes d’allumage ou à chaque composant d’un système d’allumage utilisés sur les moteurs alternatifs à combustion interne qui sont fixes lorsqu’ils fonctionnent, et sur les machines mobiles dans lesquelles le moteur à combustion interne peut être une source potentielle d’allumage. Les applications couvertes par le domaine d’application du présent document comprennent, sans s’y limiter, les compresseurs à gaz, les générateurs électriques, les chariots élévateurs à fourche et les pompes.
Le présent document ne s’applique pas:
a) aux systèmes d’allumage de moteurs qui utilisent un point de rupture ou aux systèmes d’allumage de type magnéto, car ils ne conviendraient pas à une utilisation dans une zone dangereuse;
b) aux véhicules routiers;
c) aux pièces et installations électriques basse tension qui ne sont pas incluses dans le système d’allumage, telles que les divers capteurs et thermocouples, les commandes des gaz, les robinets de commande carburant, l’interface homme-machine (IHM), les faisceaux et câblages correspondants et tous les autres éléments susceptibles d’appartenir au système de commande intégré en plus du système d’allumage.
Le présent document complète et modifie les exigences générales de l’IEC 60079-0 et les exigences de l’ISO/IEC 80079-41. En cas de contradiction entre une exigence du présent document et l’IEC 60079 0 ou l’ISO/IEC 80079-41, l’exigence du présent document prévaut
Eksplozivne atmosfere - 45. del: Električni sistemi za vžig motorjev z notranjim izgorevanjem
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2024
Eksplozivne atmosfere - 45. del: Električni sistemi za vžig motorjev z notranjim
izgorevanjem
Explosive atmospheres - Part 45: - Electrical ignition systems for internal combustion
engines
Ta slovenski standard je istoveten z: prEN IEC 60079-45:2024
ICS:
27.020 Motorji z notranjim Internal combustion engines
zgorevanjem
29.260.20 Električni aparati za Electrical apparatus for
eksplozivna ozračja explosive atmospheres
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
31/1776/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60079-45 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-06-28 2024-09-20
SUPERSEDES DOCUMENTS:
31/1717/NP, 31/1751/RVN
IEC TC 31 : EQUIPMENT FOR EXPLOSIVE ATMOSPHERES
SECRETARIAT: SECRETARY:
United Kingdom Mr Tom Stack
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
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.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries” clau ses
to be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for submitting ISC
clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).
TITLE:
Explosive atmospheres - Part 45 - Electrical Ignition Systems for Internal Combustion Engines
PROPOSED STABILITY DATE: 2029
NOTE FROM TC/SC OFFICERS:
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 permis sion
in writing from IEC.
31/1776/CDV – 2 – IEC CDV 60079-45 ED1 © IEC: 2024
2 CONTENTS
4 FOREWORD . 5
5 INTRODUCTION . 7
6 1 Scope . 8
7 2 Normative references . 8
8 3 Terms and definitions . 9
9 4 System overview . 11
10 4.1 General . 11
11 4.2 Spark containment . 11
12 4.3 Spark prevention . 11
13 4.4 Spark detection/prevention . 12
14 4.5 Ignition System Equipment . 12
15 5 Construction and testing requirements . 13
16 5.1 General . 13
17 5.2 Impact . 13
18 5.3 Chemical Compatibility . 13
19 5.4 Terminations and Connections . 13
20 5.5 Power source . 14
21 5.6 Engine Control Module and Ignition Control Unit . 14
22 5.7 Engine primary wiring . 14
23 5.8 Ignition coils . 15
24 5.9 Secondary leads . 15
25 5.9.1 General . 15
26 5.9.2 Flexible Secondary Lead . 15
27 5.9.3 Rigid Secondary Lead . 16
28 5.10 Spark plugs. 16
29 6 Spark containment . 16
30 7 Spark Prevention .
31 7.1 General . 16
32 7.2 Terminations, connections, and enclosures . 16
33 7.3 Ignition coil requirements . 17
34 7.4 Spark plug well applications . 17
35 8 Spark detection/prevention . 17
36 8.1 General . 17
37 8.2 Design Requirements . 17
38 9 Ex Equipment certificate . 17
39 10 Marking . 18
40 10.1 General . 18
41 10.2 Warning markings . 18
42 10.3 Example markings . 19
43 11 Manufacturer’s instructions . 20
44 11.1 General . 20
45 11.2 Instruction requirements . 20
46 11.3 Warnings . 20
47 11.4 Commissioning checklist . 21
IEC CDV 60079-45 ED1 © IEC: 2024 – 3 – 31/1776/CDV
48 11.5 Maintenance recommendations . 21
49 12 Test procedures . 22
50 12.1 Abrasion test for flexible secondary leads . 23
51 12.1.1 Abrasive wheel test . 23
52 12.1.2 Emery cloth abrasion test . 23
53 12.2 Ignition coils, extensions or non-flexible secondary leads elevated
54 temperature exposure test . 24
55 12.3 Chemical compatibility . 25
56 12.3.1 Chemical compatibility for non-flexible leads and equipment . 25
57 12.3.2 Chemical compatibility for Flexible Leads . 25
58 12.4 Vibration test . 26
59 12.5 Shielded secondary system tests . 28
60 12.5.1 Explosion test exemption for metallic flexible leads. 28
61 12.6 Spark plug gas tightness test . 29
62 12.6.1 Spark plug gas tightness test (primary test) . 29
63 12.6.2 Spark plug gas tightness test (alternate test) . 29
64 12.7 Flashover tests . 30
65 12.7.1 General . 30
66 12.7.2 Rigid secondary lead test configuration . 30
67 12.7.3 Flexible lead test configurations . 31
68 12.8 Flexible Secondary lead bending and dielectric voltage withstand tests . 32
69 12.9 Spark prevention test . 33
70 12.10 Primary and secondary lead terminations pull test . 34
71 12.11 Flexible Secondary lead pull test . 35
72 Annex A (informative) Guidance for Spark Containment . 36
73 Annex B (informative) Guidance for spark prevention . 37
74 Bibliography . 45
76 Figure 1 – Components of an electrical ignition system . 12
77 Figure 2 – Warning “do not disconnect” pictogram . 19
78 Figure 3 – Abrasive wheel test apparatus . 23
79 Figure 4 – Emery cloth abrasion test apparatus . 24
80 Figure 5 – Vibration Curve . 27
81 Figure 6 – Flexible lead example . 28
82 Figure 7 – Spark Plug test apparatus . 29
83 Figure 8 – Rigid secondary flashover test apparatus . 30
84 Figure 9 – Flexible hybrid secondary flashover test apparatus . 31
85 Figure 10 – Flexible secondary flashover test apparatus . 32
86 Figure 11 – Flexible secondary dielectric voltage withstand test apparatus . 33
87 Figure 12 – Secondary lead or wiring insulation cut test apparatus . 35
88 Figure B.1 – Guidance Flowchart for Spark Prevention Testing . 37
89 Figure B.2 – Terminations, Connections and Enclosures Test . 38
90 Figure B.3 – Cut Test . 39
91 Figure B.4 – Abrasion Test . 40
92 Figure B.5 – Chemical Compatibility . 41
93 Figure B.6 – Pull Test . 42
94 Figure B.7 – Ignition Coils and Rigid Extenders Test . 43
95 Figure B.8 – Spark Prevention Test . 44
31/1776/CDV – 4 – IEC CDV 60079-45 ED1 © IEC: 2024
97 Table 1 – List of critical parameters . 18
98 Table 2 – List of performance tests . 22
99 Table 3 – Chemical compatibility.
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.