Language
Edition Number: | 4 | SCC Approved: | -- |
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Edition Date: | 2013-02-15 | DOD Approved: | -- |
Price Code: | G | ANSI Approved: | 2017-05-05 |
Type: | ulisaiec |
This part of IEC 60079 specifies requirements for the construction, testing and marking for Group II electrical equipment with type of protection, "n" intended for use in explosive gas atmospheres. This standard applies to electrical equipment where the rated voltage does not exceed 15 kV r.m.s. a.c. or d.c.
1DV.1 Modification of Clause 1, first paragraph as follows:
1DV.1.1 Replace “part of IEC 60079” with “standard”.
This part of IEC 60079 is applicable to non-sparking electrical equipment and also to electrical equipment with parts or circuits producing arcs or sparks or having hot surfaces which, if not protected in one of the ways specified in this standard, could be capable of igniting a surrounding explosive gas atmosphere. This standard describes several different methods by which this can be achieved which may be combined with other methods described in IEC 60079-0.
1DV.2 Modification of Clause 1, second paragraph as follows:
1DV.2.1 Replace “part of IEC 60079” with “standard”.
This standard supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requirement of this standard takes precedence.
Table 1 – Relationship of this part to IEC 60079-0
Clause of IEC 60079-0 |
IEC 60079-0 clause application to IEC 60079-15 |
||||
---|---|---|---|---|---|
Ed. 5.0 (2007) |
Ed. 6.01 (future edition) 1Under consideration |
Clause / Subclause title |
Protected sparking |
Non sparking |
Restricted breathing |
(informative) |
(informative) |
(normative) |
nC |
nA |
nR |
4 |
4 |
Equipment grouping |
Applies |
Applies |
Applies |
4.1 |
4.1 |
Group I |
Excluded |
Excluded |
Excluded |
4.2 |
4.2 |
Group II |
Applies |
Applies |
Applies |
4.3 |
4.3 |
Group III |
Excluded |
Excluded |
Excluded |
4.4 |
4.4 |
Equipment for a particular explosive atmosphere |
Applies |
Applies |
Applies |
5.1 |
5.1 |
Environmental influences |
Applies |
Applies |
Applies |
5.1.1 |
5.1.1 |
Ambient temperature |
Applies |
Applies |
Applies |
5.1.2 |
5.1.2 |
External source of heating or cooling |
Applies |
Applies |
Applies |
5.2 |
5.2 |
Service temperature |
Applies |
Applies |
Applies |
5.3.1 |
5.3.1 |
Determination of maximum surface temperature |
Applies |
Applies |
Applies |
5.3.2.1 |
5.3.2.1 |
Group I electrical equipment |
Excluded |
Excluded |
Excluded |
5.3.2.2 |
5.3.2.2 |
Group II electrical equipment |
Applies |
Applies |
Applies |
5.3.2.3 |
5.3.2.3 |
Group III electrical equipment |
Excluded |
Excluded |
Excluded |
5.3.3 |
5.3.3 |
Small component temperature for Group I and Group II electrical equipment |
Applies |
Applies |
Excluded |
6.1 |
6.1 |
General |
Applies |
Applies |
Applies |
6.2 |
6.2 |
Mechanical strength |
Applies |
Applies |
Applies |
6.3 |
6.3 |
Opening times |
Excluded |
Excluded |
Applies |
6.4 |
6.4 |
Circulating currents |
Applies |
Applies |
Applies |
6.5 |
6.5 |
Gasket retention |
Applies |
Applies |
Applies |
6.6 |
6.6 |
Electromagnetic and ultrasonic radiating equipment |
Applies |
Applies |
Applies |
7.1.1 |
7.1.1 |
Applicability |
Applies |
Applies |
Applies |
7.1.2 |
7.1.2 |
Specification of materials |
Applies |
Applies |
Applies |
7.1.3 |
7.1.2.2 |
Plastic materials |
Applies |
Applies |
Applies |
7.1.4 |
7.1.2.3 |
Elastomeric materials |
Applies |
Applies |
Applies |
7.2 |
7.2 |
Thermal endurance |
Applies |
Applies |
Applies |
7.3 |
7.3 |
Resistance to light |
Applies |
Applies |
Applies |
7.4 |
7.4 |
Electrostatic charges on external non-metallic materials |
Applies |
Applies |
Applies |
7.5 |
9.1 |
Threaded holes |
Applies |
Applies |
Applies |
8.1.1 |
8.2 |
Group I |
Excluded |
Excluded |
Excluded |
8.1.2 |
8.3 |
Group II |
Applies |
Applies |
Applies |
8.1.3 |
8.4 |
Group III |
Excluded |
Excluded |
Excluded |
8.2 |
9.1 |
Threaded holes |
Applies |
Applies |
Applies |
9.1 |
9.1 |
General |
Applies |
Applies |
Applies |
9.2 |
9.2 |
Special fasteners |
Excluded |
Excluded |
Excluded |
9.3 |
9.3 |
Holes for special fasteners |
Excluded |
Excluded |
Excluded |
10 |
10 |
Interlocking devices |
Excluded |
Excluded |
Excluded |
11 |
11 |
Bushings |
Applies |
Applies |
Applies |
12 |
12 |
Materials used for cementing |
Modified |
Modified |
Modified |
13 |
13 |
Ex components |
Applies |
Applies |
Applies |
14 |
14 |
Connection facilities and termination compartments |
Modified |
Modified |
Modified |
15 |
15 |
Connection facilities for earthing and bonding conductors |
Applies |
Applies |
Applies |
16 |
16 |
Entries into enclosures |
Applies |
Applies |
Applies |
17 |
17 |
Supplementary requirements for rotating electrical machines |
Excluded |
Modified |
Excluded |
18 |
18 |
Supplementary requirements for switchgear |
Applies |
Applies |
Applies |
19 |
19 |
Supplementary requirements for fuses |
Modified |
Modified |
Modified |
20 |
20 |
Supplementary requirements for plugs and sockets |
Modified |
Modified |
Modified |
21 |
21 |
Supplementary requirements for luminaires |
Modified |
Modified |
Modified |
22 |
22 |
Supplementary requirements for caplights and handlights |
Applies |
Applies |
Applies |
23 |
23 |
Equipment incorporating cells and batteries |
Modified |
Modified |
Modified |
24 |
24 |
Documentation |
Applies |
Applies |
Applies |
25 |
25 |
Compliance of prototype or sample with documents |
Applies |
Applies |
Applies |
26.1 |
26.1 |
General |
Applies |
Applies |
Applies |
26.2 |
26.2 |
Test configuration |
Applies |
Applies |
Applies |
26.3 |
26.3 |
Tests in explosive test mixtures |
Applies |
Applies |
Applies |
26.4 |
26.4 |
Tests of enclosures |
Applies |
Applies |
Applies |
26.4.1.1 |
26.4.1.1 |
Metallic enclosures, metallic parts of enclosures and glass parts of enclosures |
Applies |
Applies |
Applies |
26.4.1.2.1 |
26.4.1.2.1 |
Group I electrical equipment |
Excluded |
Excluded |
Excluded |
26.4.1.2.2 |
26.4.1.2.2 |
Group II and Group III electrical equipment |
Applies |
Applies |
Applies |
26.4.2 |
26.4.2 |
Resistance to impact |
Applies |
Applies |
Applies |
26.4.3 |
26.4.3 |
Drop test |
Applies |
Applies |
Applies |
26.4.4 |
26.4.4 |
Acceptance criteria |
Applies |
Applies |
Applies |
26.4.5 |
26.4.5 |
Degree of protection by enclosure |
Applies |
Applies |
Applies |
26.5 |
26.5 |
Thermal tests |
Applies |
Applies |
Applies |
26.6 |
26.6 |
Torque test for bushings |
Applies |
Applies |
Applies |
26.7 |
26.7 |
Non-metallic enclosures or non-metallic parts of enclosures |
Modified |
Modified |
Modified |
26.8 |
26.8 |
Thermal endurance to heat |
Modified |
Modified |
Modified |
26.9 |
26.9 |
Thermal endurance to cold |
Applies |
Applies |
Applies |
26.10 |
26.10 |
Resistance to light |
Applies |
Applies |
Applies |
26.11 |
26.11 |
Resistance to chemical agents for Group I electrical equipment |
Excluded |
Excluded |
Excluded |
26.12 |
26.12 |
Earth continuity |
Applies |
Applies |
Applies |
26.13 |
26.13 |
Surface resistance test of parts of enclosures of non-metallic materials |
Applies |
Applies |
Applies |
26.14 |
– |
Charging tests |
Applies |
Applies |
Applies |
26.15 |
26.14 |
Measurement of capacitance |
Applies |
Applies |
Applies |
27 |
27 |
Routine tests |
Applies |
Applies |
Applies |
28 |
28 |
Manufacturers responsibility |
Applies |
Applies |
Applies |
29 |
29 |
Marking |
Applies |
Applies |
Applies |
30 |
30 |
Instructions |
Applies |
Applies |
Applies |
Annex A |
Annex A |
Supplementary requirements for Ex cable glands |
Applies |
Applies |
Applies |
Annex B |
Annex B |
Requirements for Ex components |
Applies |
Applies |
Applies |
Annex C |
Annex C |
Example of rig for resistance to impact test |
Applies |
Applies |
Applies |
Annex D |
Annex D |
Introduction to an alternative risk assessment method encompassing “equipment protection levels” fro Ex equipment |
Applies |
Applies |
Applies |
Applies : this requirement of IEC 60079-0 is applied without change. |
|||||
Excluded : this requirement of IEC 60079-0 does not apply. |
|||||
Modified : this requirement of IEC 60079-0 is modified as detailed in this standard. |
1DV Modification of Table 1 to replace with the following:
Table 1DV – Relationship of this part to IEC 60079-0
Clause of IEC 60079-0
IEC 60079-0 clause application to IEC 60079-15
Ed. 5.0 (2009)
Ed. 6.01 (future edition)
1Under consideration
Clause / Subclause title
Protected sparking
Non sparking
Restricted breathing
(informative)
(informative)
(normative)
nC
nA
nR
4
4
Equipment grouping
Applies
Applies
Applies
–
4.1
Group I
Excluded
Excluded
Excluded
4.2
4.2
Group II
Applies
Applies
Applies
4.3
4.3
Group III
Excluded
Excluded
Excluded
4.4
4.4
Equipment for a particular explosive atmosphere
Applies
Applies
Applies
5.1
5.1
Environmental influences
Applies
Applies
Applies
5.1.1
5.1.1
Ambient temperature
Applies
Applies
Applies
5.1.2
5.1.2
External source of heating or cooling
Applies
Applies
Applies
5.2
5.2
Service temperature
Applies
Applies
Applies
5.3.1
5.3.1
Determination of maximum surface temperature
Applies
Applies
Applies
–
5.3.2.1
Group I electrical equipment
Excluded
Excluded
Excluded
5.3.2.2
5.3.2.2
Group II electrical equipment
Applies
Applies
Applies
5.3.2.3
5.3.2.3
Group III electrical equipment
Excluded
Excluded
Excluded
5.3.3
5.3.3
Small component temperature for Group I and Group II electrical equipment
Applies
Applies
Excluded
6.1
6.1
General
Applies
Applies
Applies
6.2
6.2
Mechanical strength
Applies
Applies
Applies
6.3
6.3
Opening times
Excluded
Excluded
Applies
6.4
6.4
Circulating currents
Applies
Applies
Applies
6.5
6.5
Gasket retention
Applies
Applies
Applies
6.6
6.6
Electromagnetic and ultrasonic radiating equipment
Applies
Applies
Applies
7.1.1
7.1.1
Applicability
Applies
Applies
Applies
7.1.2
7.1.2
Specification of materials
Applies
Applies
Applies
7.1.3
7.1.2.2
Plastic materials
Applies
Applies
Applies
7.1.4
7.1.2.3
Elastomeric materials
Applies
Applies
Applies
7.2
7.2
Thermal endurance
Applies
Applies
Applies
7.3
7.3
Resistance to light
Applies
Applies
Applies
7.4
7.4
Electrostatic charges on external non-metallic materials
Applies
Applies
Applies
7.5
9.1
Threaded holes
Applies
Applies
Applies
–
7.5
Accessible metal parts
Excluded
Excluded
Excluded
–
8.2
Group I
Excluded
Excluded
Excluded
8.1.2
8.3
Group II
Applies
Applies
Applies
8.1.3
8.4
Group III
Excluded
Excluded
Excluded
8.2
9.1
Threaded holes
Applies
Applies
Applies
9.1
9.1
General
Applies
Applies
Applies
9.2
9.2
Special fasteners
Excluded
Excluded
Excluded
9.3
9.3
Holes for special fasteners
Excluded
Excluded
Excluded
10
10
Interlocking devices
Excluded
Excluded
Excluded
11
11
Bushings
Applies
Applies
Applies
12
12
Materials used for cementing
Modified
Modified
Modified
13
13
Ex components
Applies
Applies
Applies
14
14
Connection facilities and termination compartments
Modified
Modified
Modified
15
15
Connection facilities for earthing and bonding conductors
Applies
Applies
Applies
16
16
Entries into enclosures
Applies
Applies
Applies
17
17
Supplementary requirements for rotating electrical machines
Excluded
Modified
Excluded
18
18
Supplementary requirements for switchgear
Applies
Applies
Applies
19
19
Supplementary requirements for fuses
Modified
Modified
Modified
20
20
Supplementary requirements for plugs and sockets
Modified
Modified
Modified
21
21
Supplementary requirements for luminaires
Modified
Modified
Modified
22
22
Supplementary requirements for caplights and handlights
Applies
Applies
Applies
23
23
Equipment incorporating cells and batteries
Modified
Modified
Modified
24
24
Documentation
Applies
Applies
Applies
25
25
Compliance of prototype or sample with documents
Applies
Applies
Applies
26.1
26.1
General
Applies
Applies
Applies
26.2
26.2
Test configuration
Applies
Applies
Applies
26.3
26.3
Tests in explosive test mixtures
Applies
Applies
Applies
26.4
26.4
Tests of enclosures
Applies
Applies
Applies
26.4.1.1
26.4.1.1
Metallic enclosures, metallic parts of enclosures and glass parts of enclosures
Applies
Applies
Applies
–
26.4.1.2.1
Group I electrical equipment
Excluded
Excluded
Excluded
26.4.1.2.2
26.4.1.2.2
Group II and Group III electrical equipment
Applies
Applies
Applies
26.4.2
26.4.2
Resistance to impact
Applies
Applies
Applies
26.4.3
26.4.3
Drop test
Applies
Applies
Applies
26.4.4
26.4.4
Acceptance criteria
Applies
Applies
Applies
26.4.5
26.4.5
Degree of protection by enclosure
Applies
Applies
Applies
26.5
26.5
Thermal tests
Applies
Applies
Applies
26.6
26.6
Torque test for bushings
Applies
Applies
Applies
26.7
26.7
Non-metallic enclosures or non-metallic parts of enclosures
Modified
Modified
Modified
26.8
26.8
Thermal endurance to heat
Modified
Modified
Modified
26.9
26.9
Thermal endurance to cold
Applies
Applies
Applies
26.10
26.10
Resistance to light
Applies
Applies
Applies
–
26.11
Resistance to chemical agents for Group I electrical equipment
Excluded
Excluded
Excluded
26.13
26.13
Surface resistance test of parts of enclosures of non-metallic materials
Applies
Applies
Applies
26.14
–
Charging tests
Applies
Applies
Applies
26.15
26.14
Measurement of capacitance
Applies
Applies
Applies
–
26.15
Verification of ratings of ventilating fans
Excluded
Excluded
Excluded
–
26.16
Alternative qualification of elastomeric sealing O-rings
Applies
Applies
Applies
27
27
Routine tests
Applies
Applies
Applies
28
28
Manufacturers responsibility
Applies
Applies
Applies
29
29
Marking
Applies
Applies
Applies
30
30
Instructions
Applies
Applies
Applies
Annex A
Annex A
Supplementary requirements for Ex cable glands
Applies
Applies
Applies
Annex B
Annex B
Requirements for Ex components
Applies
Applies
Applies
Annex C
Annex C
Example of rig for resistance to impact test
Applies
Applies
Applies
Annex D
Annex D
Introduction to an alternative risk assessment method encompassing “equipment protection levels” fro Ex equipment
Applies
Applies
Applies
–
Annex E
Temperature rise testing of electric machines
Applies
Applies
Applies
–
Annex F
Guideline flowchart for tests of non-metallic enclosures or non-metallic parts of enclosures
Applies
Applies
Applies
–
Annex G
Common standards – safety requirements for electrical equipment
Applies
Applies
Applies
–
Annex H
United States Major National Differences
Applies
Applies
Applies
–
Annex I
Equipment grounding
Applies
Applies
Applies
Applies : this requirement of IEC 60079-0 is applied without change.
Excluded : this requirement of IEC 60079-0 does not apply.
Modified : this requirement of IEC 60079-0 is modified as detailed in this standard.
NOTE 1 The clause number in the above table is shown for information only. The applicable requirements of IEC 60079-0 are identified by the clause title which is normative. This document was written against the specific requirements of IEC 60079-0 (ed. 5.0). The clause numbers for the previous edition are shown for information only. This is to enable the General Requirements IEC 60079-0 (ed. 5.0) to be used where necessary with this part of IEC 60079. Where there were no requirements, indicated by “NR” or there is a conflict between requirements, the later edition requirements take precedence.
NOTE 2 A non-incendive component is limited in use to the particular circuit for which it has been shown to be non-ignition capable and, therefore, cannot be separately assessed as complying with this standard.
NOTE 3 Compliance with this standard does not imply any removal of, or lowering of the requirements of any other standard with which the electrical equipment complies.
NOTE 4 This part of IEC 60079 supplements, and may enhance, the requirements for equipment for normal industrial applications. Where compliance with other IEC standards is indicated, such as IEC 60034 for motors and IEC 60598-2 for luminaires, proving compliance to those standards is normally the responsibility of the manufacturer.
NOTE 5 Type of protection “n” provides Equipment Protection Level (EPL) Gc. For further information, see IEC 60079-0.
1DV.3 Addition of 1DV.3.1
1DV.3.1 Where references are made to other IEC 60079 standards, the referenced requirements found in these standards shall apply as modified by any applicable U.S. National Differences.