UL 60079-11

Explosive Atmospheres - Part 11: Equipment Protection by Intrinsic Safety 'i'



This part of IEC 60079 specifies the construction and testing of intrinsically safe apparatus intended for use in an explosive atmosphere and for associated apparatus, which is intended for connection to intrinsically safe circuits which enter such atmospheres.

1DV.1.1 Replace "part of IEC 60079" with "standard".

This type of protection is applicable to electrical equipment in which the electrical circuits themselves are incapable of causing an explosion in the surrounding explosive atmospheres.

This standard is also applicable to electrical equipment or parts of electrical equipment located outside the explosive atmosphere or protected by another Type of Protection listed in IEC 60079-0, where the intrinsic safety of the electrical circuits in the explosive atmosphere may depend upon the design and construction of such electrical equipment or parts of such electrical equipment. The electrical circuits exposed to the explosive atmosphere are evaluated for use in such an atmosphere by applying this standard.

The requirements for intrinsically safe systems are provided in IEC 60079-25.

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 requirements of this standard shall take precedence.

If requirements in this standard are applicable to both intrinsically safe apparatus and associated apparatus the term ?apparatus? is used throughout the standard.

This standard is for electrical equipment only; therefore the term ?equipment? used in the standard always means ?electrical equipment?.

If associated apparatus is placed in the explosive atmosphere, it shall be protected by an appropriate Type of Protection listed in IEC 60079-0, and then the requirements of that method of protection together with the relevant parts of IEC 60079-0 also apply to the associated apparatus.

Table 1 - Applicability of specific clauses of IEC 60079-0

Clause or subclause of IEC 60079-0

IEC 60079-0 clause application to IEC 60079-11

Intrinsically safe apparatus

Associated apparatus

Ed. 5.0 (2007)

Ed. 6.0 (2011)

Clause / Subclause title

Group I and Group II

Group III

(informative)

(informative)

(normative)

1

1

Scope

Applies

Applies

Applies

2

2

Normative references

Applies

Applies

Applies

3

3

Terms and definitions

Applies

Applies

Applies

4

4

Equipment grouping

Applies

Applies

Applies

4.1

4.1

Group I

Applies

Excluded

Applies

4.2

4.2

Group II

Applies

Excluded

Applies

4.3

4.3

Group III

Excluded

Applies

Applies

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

Excluded

5.3.2.1

5.3.2.1

Group I electrical equipment

Applies

Excluded

Excluded

5.3.2.2

5.3.2.2

Group II electrical equipment

Applies

Excluded

Excluded

5.3.2.3

5.3.2.3

Group III electrical equipment

Excluded

Applies

Excluded

5.3.3

5.3.3

Small component temperature for Group I or Group II electrical equipment

Applies

Excluded

Excluded

6.1

6.1

General

Applies

Applies

Applies

6.2

6.2

Mechanical strength of equipment

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

6.3

6.3

Opening times

Excluded

Excluded

Excluded

6.4

6.4

Circulating currents in enclosures (e.g. of large electrical machines)

Excluded

Excluded

Excluded

6.5

6.5

Gasket retention

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

6.6

6.6

Electromagnetic and ultrasonic radiating equipment

Applies

Applies

Excluded

7.1.1

7.1.1

Applicability

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

7.1.2

7.1.2.1

Specification of materials

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

7.1.3

7.1.2.2

Plastic materials

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

7.1.4

7.1.2.3

Elastomers

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

7.2

7.2

Thermal endurance

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

7.3

7.3

Resistance to light

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

7.4

7.4

Electrostatic charges on external non-metallic materials

Applies

Applies

Excluded

NR

7.5

Accessible metal parts

Applies

Applies

Excluded

7.5

NR

Threaded holes

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

8.1

8.1

Material composition

Applies

Applies

Excluded

8.1.1

8.2

Group I

Applies

Excluded

Excluded

8.1.2

8.3

Group II

Applies

Excluded

Excluded

8.1.3

8.4

Group III

Excluded

Applies

Excluded

8.2

NR

Threaded holes

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

9

9

Fasteners

Excluded

Excluded

Excluded

10

10

Interlocking devices

Excluded

Excluded

Excluded

11

11

Bushings

Excluded

Excluded

Excluded

12

12

Materials used for cementing

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

13

13

Ex Components

Applies

Applies

Applies

14

14

Connection facilities and termination compartments

Excluded

Excluded

Excluded

15

15

Connection facilities for earthing or bonding conductors

Excluded

Excluded

Excluded

16

16

Entries into enclosures

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

17

17

Supplementary requirements for rotating machines

Excluded

Excluded

Excluded

18

18

Supplementary requirements for switchgear

Excluded

Excluded

Excluded

19

19

Supplementary requirements for fuses

Excluded

Excluded

Excluded

20

20

Supplementary requirements for plugs, socket outlets and connectors

Excluded

Excluded

Excluded

21

21

Supplementary requirements for luminaires

Excluded

Excluded

Excluded

22

22

Supplementary requirements for caplights and handlights

Modified

Modified

Excluded

23.1

23.1

General

Applies

Applies

Applies

23.2

23.2

Batteries

Excluded

Excluded

Excluded

23.3

23.3

Cell types

Applies

Applies

Applies

23.4

23.4

Cells in a battery

Applies

Applies

Applies

23.5

23.5

Ratings of batteries

Applies

Applies

Applies

23.6

23.6

Interchangeability

Applies

Applies

Applies

23.7

23.7

Charging of primary batteries

Applies

Applies

Applies

23.8

23.8

Leakage

Applies

Applies

Applies

23.9

23.9

Connections

Applies

Applies

Applies

23.10

23.10

Orientation

Applies

Applies

Applies

23.11

23.11

Replacement of cells or batteries

Applies

Applies

Applies

23.12

23.12

Replaceable battery pack

Applies

Applies

Applies

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

26.4.1

26.4.1

Order of tests

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.4.1.1

26.4.1.1

Metallic enclosures, metallic parts of enclosures and glass parts of enclosures

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.4.1.2

26.4.1.2

Non-metallic enclosures or non-metallic parts of enclosures

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.4.1.2.1

26.4.1.2.1

Group I electrical equipment

Excluded except when 6.1.2.3 a) is applied

Excluded

Excluded except when 6.1.2.3 a) is applied

26.4.1.2.2

26.4.1.2.2

Group II and Group III electrical equipment

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.4.2

26.4.2

Resistance to impact

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.4.3

26.4.3

Drop test

Applies

Applies

Excluded except when 6.1.2.3 a) is applied

26.4.4

26.4.4

Acceptance criteria

Applies

Applies

Excluded except when 6.1.2.3 a) is applied

26.4.5

26.4.5

Degree of protection (IP) by enclosures

Applies

Applies

Applies

26.5.1.1

26.5.1.1

General

Applies

Applies

Excluded

26.5.1.2

26.5.1.2

Service temperature

Modified

Modified

Modified

26.5.1.3

26.5.1.3

Maximum surface temperature

Modified

Modified

Modified

26.5.2

26.5.2

Thermal shock test

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.5.3

26.5.3

Small component ignition test (Group I and Group II)

Applies

Excluded

Excluded

26.6

26.6

Torque test for bushings

Excluded

Excluded

Excluded

26.7

26.7

Non-metallic enclosures or non-metallic parts of enclosures

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.8

26.8

Thermal endurance to heat

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.9

26.9

Thermal endurance to cold

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.10

26.10

Resistance to light

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.11

26.11

Resistance to chemical agents for Group I electrical equipment

Excluded except when 6.1.2.3 a) is applied

Excluded

Excluded

26.12

26.12

Earth continuity

Excluded

Excluded

Excluded

26.13

26.13

Surface resistance test of parts of enclosures of non-metallic materials

Applies

Applies

Excluded

26.15

26.14

Measurement of capacitance

Applies

Applies

Excluded

NR

26.15

Verification of ratings of ventilating fans

Excluded

Excluded

Excluded

NR

26.16

Alternative qualification of elastomeric sealing O-rings

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

27

27

Routine tests

Applies

Applies

Applies

28

28

Manufacturer's responsibility

Applies

Applies

Applies

29

29

Marking

Applies

Applies

Applies

30

30

Instructions

Applies

Applies

Applies

Annex A (Normative)

Annex A (Normative)

Supplementary requirements for cable glands

Excluded

Excluded

Excluded

Annex B (Normative)

Annex B (Normative)

Requirements for Ex Components

Applies

Applies

Applies

Annex C (Normative)

Annex C (Normative)

Example of rig for resistance to impact test

Applies

Applies

Excluded except when 6.1.2.3 a) is applied

Annex D (Informative)

NR

Alternative risk assessment method encompassing ?equipment protection levels? for Ex equipment

Applies

Applies

Applies

Annex E (Informative)

Annex D (Informative)

Motors supplied by converters

Excluded

Excluded

Excluded

NR

Annex E (Informative)

Temperature rise testing of electric machines

Excluded

Excluded

Excluded

NR

Annex F (Informative)

Guideline flowchart for tests of non-metallic enclosures or nonmetallic parts of enclosures (26.4 )

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

Applies - This requirement of IEC 60079-0 is applied without change.

Excluded - This requirement of IEC 60079-0 does not apply.

Excluded except - This requirement of IEC 60079-0 does not apply except when the conditions stated are met.

Modified - This requirement of IEC 60079-0 is modified as detailed in this standard.

NR - No requirements.

NOTE The clause numbers in the above table are shown for information only. The applicable requirements of IEC 60079-0 are identified by the clause title which is normative. This table was written against the specific requirements of IEC 60079-0, ed. 6.0. 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.

Table 1DV - Applicability of specific clauses of IEC 60079-0

Clause or subclause of IEC 60079-0

IEC 60079-0 clause application to IEC 60079-11

Intrinsically safe apparatus

Associated apparatus

Ed. 5.0

Ed. 6.0

Clause / Subclause title

Group I and Group II

Group III

(informative)

(informative)

(normative)

1

1

Scope

Applies

Applies

Applies

2

2

Normative references

Applies

Applies

Applies

3

3

Terms and definitions

Applies

Applies

Applies

4

4

Equipment grouping

Applies

Applies

Applies

4.1

4.1

Group I

Applies

Excluded

Applies

4.2

4.2

Group II

Applies

Excluded

Applies

4.3

4.3

Group III

Excluded

Applies

Applies

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

Excluded

5.3.2.1

5.3.2.1

Group I electrical equipment

Applies

Excluded

Excluded

5.3.2.2

5.3.2.2

Group II electrical equipment

Applies

Excluded

Excluded

5.3.2.3

5.3.2.3

Group III electrical equipment

Excluded

Applies

Excluded

5.3.3

5.3.3

Small component temperature for Group I or Group II electrical equipment

Applies

Excluded

Excluded

6.1

6.1

General

Applies

Applies

Applies

6.2

6.2

Mechanical strength of equipment

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

6.3

6.3

Opening times

Excluded

Excluded

Excluded

6.4

6.4

Circulating currents in enclosures (e.g. of large electrical machines)

Excluded

Excluded

Excluded

6.5

6.5

Gasket retention

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

6.6

6.6

Electromagnetic and ultrasonic radiating equipment

Applies

Applies

Excluded

7.1.1

7.1.1

Applicability

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

7.1.2

7.1.2.1

Specification of materials

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

7.1.3

7.1.2.2

Plastic materials

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

7.1.4

7.1.2.3

Elastomers

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

7.2

7.2

Thermal endurance

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

7.3

7.3

Resistance to light

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

7.4

7.4

Electrostatic charges on external non-metallic materials

Applies

Applies

Excluded

NR

7.5

Accessible metal parts

Applies

Applies

Excluded

7.5

NR

Threaded holes

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

8.1

8.1

Material composition

Applies

Applies

Excluded

8.1.1

8.2

Group I

Applies

Excluded

Excluded

8.1.2

8.3

Group II

Applies

Excluded

Excluded

8.1.3

8.4

Group III

Excluded

Applies

Excluded

8.2

NR

Threaded holes

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

9

9

Fasteners

Excluded

Excluded

Excluded

10

10

Interlocking devices

Excluded

Excluded

Excluded

11

11

Bushings

Excluded

Excluded

Excluded

12

12

Materials used for cementing

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

13

13

Ex Components

Applies

Applies

Applies

14

14

Connection facilities and termination compartments

Excluded

Excluded

Excluded

15

15

Connection facilities for earthing or bonding conductors

Excluded

Excluded

Excluded

16

16

Entries into enclosures

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

17

17

Supplementary requirements for rotating machines

Excluded

Excluded

Excluded

18

18

Supplementary requirements for switchgear

Excluded

Excluded

Excluded

19

19

Supplementary requirements for fuses

Excluded

Excluded

Excluded

20

20

Supplementary requirements for plugs, socket outlets and connectors

Excluded

Excluded

Excluded

21

21

Supplementary requirements for luminaires

Excluded

Excluded

Excluded

22

22

Supplementary requirements for caplights and handlights

Modified

Modified

Excluded

23.1

23.1

General

Applies

Applies

Applies

23.2

23.2

Batteries

Excluded

Excluded

Excluded

23.3

23.3

Cell types

Applies

Applies

Applies

23.4

23.4

Cells in a battery

Applies

Applies

Applies

23.5

23.5

Ratings of batteries

Applies

Applies

Applies

23.6

23.6

Interchangeability

Applies

Applies

Applies

23.7

23.7

Charging of primary batteries

Applies

Applies

Applies

23.8

23.8

Leakage

Applies

Applies

Applies

23.9

23.9

Connections

Applies

Applies

Applies

23.10

23.10

Orientation

Applies

Applies

Applies

23.11

23.11

Replacement of cells or batteries

Applies

Applies

Applies

23.12

23.12

Replaceable battery pack

Applies

Applies

Applies

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

26.4.1

26.4.1

Order of tests

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.4.1.1

26.4.1.1

Metallic enclosures, metallic parts of enclosures and glass parts of enclosures

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.4.1.2

26.4.1.2

Non-metallic enclosures or non-metallic parts of enclosures

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.4.1.2.1

26.4.1.2.1

Group I electrical equipment

Excluded except when 6.1.2.3 a) is applied

Excluded

Excluded except when 6.1.2.3 a) is applied

26.4.1.2.2

26.4.1.2.2

Group II and Group III electrical equipment

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.4.2

26.4.2

Resistance to impact

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.4.3

26.4.3

Drop test

Applies

Applies

Excluded except when 6.1.2.3 a) is applied

26.4.4

26.4.4

Acceptance criteria

Applies

Applies

Excluded except when 6.1.2.3 a) is applied

26.4.5

26.4.5

Degree of protection (IP) by enclosures

Applies

Applies

Applies

26.5.1.1

26.5.1.1

General

Applies

Applies

Excluded

26.5.1.2

26.5.1.2

Service temperature

Modified

Modified

Modified

26.5.1.3

26.5.1.3

Maximum surface temperature

Modified

Modified

Modified

26.5.2

26.5.2

Thermal shock test

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.5.3

26.5.3

Small component ignition test (Group I and Group II)

Applies

Excluded

Excluded

26.6

26.6

Torque test for bushings

Excluded

Excluded

Excluded

26.7

26.7

Non-metallic enclosures or non-metallic parts of enclosures

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.8

26.8

Thermal endurance to heat

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.9

26.9

Thermal endurance to cold

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.10

26.10

Resistance to light

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

26.11

26.11

Resistance to chemical agents for Group I electrical equipment

Excluded except when 6.1.2.3 a) is applied

Excluded

Excluded

26.12

26.12

Earth continuity

Excluded

Excluded

Excluded

26.13

26.13

Surface resistance test of parts of enclosures of non-metallic materials

Applies

Applies

Excluded

26.15

26.14

Measurement of capacitance

Applies

Applies

Excluded

NR

26.15

Verification of ratings of ventilating fans

Excluded

Excluded

Excluded

NR

26.16

Alternative qualification of elastomeric sealing O-rings

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

27

27

Routine tests

Applies

Applies

Applies

28

28

Manufacturer's responsibility

Applies

Applies

Applies

29

29

Marking

Applies

Applies

Applies

30

30

Instructions

Applies

Applies

Applies

Annex A (Normative)

Annex A (Normative)

Supplementary requirements for cable glands

Excluded

Excluded

Excluded

Annex B (Normative)

Annex B (Normative)

Requirements for Ex Components

Applies

Applies

Applies

Annex C (Normative)

Annex C (Normative)

Example of rig for resistance to impact test

Applies

Applies

Excluded except when 6.1.2.3 a) is applied

Annex D (Informative)

NR

Alternative risk assessment method encompassing ?equipment protection levels? for Ex equipment

Applies

Applies

Applies

Annex E (Informative)

Annex D (Informative)

Motors supplied by converters

Excluded

Excluded

Excluded

NR

Annex E (Informative)

Temperature rise testing of electric machines

Excluded

Excluded

Excluded

NR

Annex F (Informative)

Guideline flowchart for tests of non-metallic enclosures or nonmetallic parts of enclosures (26.4 )

Excluded except when 6.1.2.3 a) is applied

Excluded except when 6.1.3 a) is applied.

Excluded except when 6.1.2.3 a) is applied

Applies - This requirement of IEC 60079-0 is applied without change.

Excluded - This requirement of IEC 60079-0 does not apply.

Excluded except - This requirement of IEC 60079-0 does not apply except when the conditions stated are met.

Modified - This requirement of IEC 60079-0 is modified as detailed in this standard.

NR - No requirements.

NOTE 1 The clause numbers in the above table are shown for information only. The applicable requirements of IEC 60079-0 are identified by the clause title which is normative. This table was written against the specific requirements of IEC 60079-0, ed. 6.0. 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 In the US, the authority having jurisdiction for underground mines is the Mine Safety and Health Administration (MSHA) of the federal government. Additional regulations beyond those detailed here will also apply.

1DV.2.1 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.


DETAILS

  • Edition Number: 6
  • Edition Date: 02/15/2013
  • Price Code: H
  • Type: ulisaiec
  • ANSI Approved: 03/28/2014
  • DOD Approved: