UL Standards & Engagement Explosive atmospheres - Part 15: Equipment protection by type of protection 'n' UL 60079-15

Description
This part of IEC 60079 document specifies requirements for the construction, testing and marking for Group II electrical equipment with type of protection "n" which includes; sealed devices "nC", hermetically sealed devices "nC", non-incendive components "nC" and restricted breathing enclosures "nR" intended for use in explosive gas atmospheres. This part of IEC 60079 document applies to electrical equipment where the rated input voltage does not exceed 15 kV r.m.s. AC or DC including where the internal working voltages of the Ex product exceeds 15 kV, for example starters for HID luminaires. Where references are made to IEC, IEC/IEEE, ISO, ISO/IEC standards, the referenced requirements found in these standards shall apply as modified by any applicable US National Differences for the standard (see Clause 2). This part of IEC 60079 document supplements and modifies the general requirements of IEC 60079-0 UL 60079-0 , except as indicated in Table 1. Where a requirement of this part of IEC 60079 document conflicts with a requirement of IEC 60079-0 UL 60079-0 , the requirement of this part of IEC 60079 document takes precedence. Clause of IEC 60079-0 UL 60079-0 IEC 60079-0 UL 60079-0 clause application to IEC 60079-15 UL 60079-15 Ed. 6.0 ( 2011 2013 ) Ed. 7.0 (future edition) 2019 Clause / Subclause title Protected sparking Restricted breathing (informative) (informative) (normative) "nC" "nR" 3 3 Definitions Applies Applies 4 4 Equipment grouping 4.1 4.1 Group I Excluded Excluded 4.2 4.2 Group II Applies Applies 4.3 4.3 Group III Excluded Excluded 4.4 4.4 Equipment for a particular explosive atmosphere Applies Applies 5 5 Temperatures 5.1 5.1 Environmental influences Applies Applies 5.2 5.2 Service temperature Applies Applies 5.3 5.3 Maximum surface temperature 5.3.1 5.3.1 Determination of maximum surface temperature Applies Applies 5.3.2 5.3.2 Limitation of maximum surface temperature 5.3.2.1 5.3.2.1 Group I equipment Excluded Excluded 5.3.2.2 5.3.2.2 Group II equipment Applies Applies 5.3.2.3 5.3.2.3 Group III electrical equipment Excluded Excluded 5.3.3 5.3.3 Small component temperature for Group I and Group II equipment Applies Excluded - 5.3.4 Component temperature of smooth surfaces for Group I or Group II equipment (Applies for smaller than 10 000 mm 2 only) Applies Excluded 6 6 Requirements for all electrical apparatus 6.1 6.1 General Applies Applies 6.2 6.2 Mechanical strength Applies Applies 6.3 6.3 Opening times Excluded Applies 6.4 6.4 Circulating currents Applies Applies 6.5 6.5 Gasket retention Applies Applies 6.6 6.6 Electromagnetic and ultrasonic radiating equipment Applies Applies 7 7 Non-metallic enclosures and non-metallic parts of enclosures 7.1 7.1 General 7.1.1 7.1.1 Applicability Applies Applies 7.1.2 7.1.2 Specification of materials Applies Applies 7.2 7.2 Thermal endurance 7.2.1 7.2.1 Tests for thermal resistance Applies Applies 7.2.2 - Material selection Modified Modified - 7.2.2 Material selection Applies Applies 7.2.3 7.2.3 Alternative qualification for elastomeric sealing O-rings Applies Applies 7.3 7.3 Resistance to ultraviolet light Applies Applies 7.4 7.4 Electrostatic charges on external non-metallic materials 7.4.1 7.4.1 Applicability Applies Applies 7.4.2 7.4.2 Avoidance of build-up of electrostatic charge on Group I or Group II electrical equipment Applies Applies 7.4.3 7.4.3 Avoidance of build-up of electrostatic charge on equipment for Group III Excluded Excluded 7.5 7.5 External conductive parts Applies Applies 8 8 Metallic enclosures and metallic parts of enclosures 8.1 8.1 Material composition Applies Applies 8.2 8.2 Group I Excluded Excluded 8.3 8.3 Group II Applies Applies 8.4 8.4 Group III Excluded Excluded NR 8.5 Copper alloys Applies Applies 9 9 Fasteners 9.1 9.1 General Applies Applies 9.2 9.2 Special fasteners Excluded Excluded 9.3 9.3 Holes for special fasteners Excluded Excluded 9.3.3 - Hexagon socket set screws Excluded Excluded - 9.4 Hexagon socket set screws Excluded Excluded 10 10 Interlocking devices Excluded Excluded 11 11 Bushings Applies Applies 12 - Materials used for cementing Modified Modified - 12 Reserved for future use. Modified Modified 13 13 Ex components Applies Applies 14 14 Connection facilities Applies Applies 15 15 Connection facilities for earthing and bonding conductors Applies Applies 16 16 Entries into enclosures Applies Applies 17 17 Supplementary requirements for electric machines Excluded Excluded 18 18 Supplementary requirements for switchgear Excluded 18.1 18.1 Flammable dielectric Excluded Applies 18.2 18.2 Disconnectors Excluded Applies 18.3 18.3 Group I - Provisions for locking Excluded Excluded 18.4 18.4 Doors and covers Excluded Applies 19 - Supplementary requirements for fuses Excluded Excluded - 19 Reserved for future use. Excluded Excluded 20 20 Supplementary requirements for plugs and sockets 20.1 20.1 General Applies Applies 20.2 20.2 Explosive gas atmospheres Excluded Excluded 20.3 20.3 Explosive dust atmospheres Excluded Excluded 20.4 20.4 Energized plugs Applies Applies 21 21 Supplementary requirements for luminaires 21.1 21.1 General Applies Applies 21.2 21.2 Covers for luminaires of EPL Mb, EPL Gb or EPL Db Excluded Excluded 21.3 21.3 Covers for luminaires of EPL Gc or EPL Dc Applies Applies 21.4 21.4 Sodium lamps Applies Applies 22 22 Supplementary requirements for caplights and handlights 22.1 22.1 Group I caplights Excluded Excluded 22.2 22.2 Group II and Group III caplights and handlights Excluded Applies 23 23 Equipment incorporating cells and batteries Applies Applies 23.12 23.12 Replacement battery pack Applies Applies 24 24 Documentation Modified Modified 25 25 Compliance of prototype or sample with documents Applies Applies 26 26 Type tests Applies Applies 26.4 26.4 Tests of enclosures 26.4.1 26.4.1 Order of tests 26.4.1.1 26.4.1.1 Metallic enclosures, metallic parts of enclosures and glass or ceramic parts of enclosures Applies Applies 26.4.1.2 26.4.1.2 Non-metallic enclosures or non-metallic parts of enclosures 26.4.1.2.1 26.4.1.2.1 General Applies Applies 26.4.1.2.2 26.4.1.2.2 Group I electrical equipment Excluded Excluded 26.4.1.2.3 - Group II and Group III electrical equipment Modified Modified - 26.4.1.2.3 Group II and Group III electrical equipment Applies Applies 26.4.2 26.4.2 Resistance to impact Applies Applies 26.4.3 26.4.3 Drop test Applies Applies 26.4.4 26.4.4 Acceptance criteria Applies Applies 26.4.5 26.4.5 Degree of protection by enclosure Applies Applies 26.5 26.5 Thermal tests 26.5.1 26.5.1 Temperature measurement Applies Applies 26.5.1.1 26.5.1.1 General Applies Applies 26.5.1.2 26.5.1.2 Service Temperature Applies Applies 26.5.2 26.5.2 Thermal shock test Applies Applies 26.5.3 26.5.3 Small component ignition test (Group I and Group II) Applies Excluded 26.6 26.6 Torque test for bushings Applies Applies 26.7 26.7 Non-metallic enclosures or non-metallic parts of enclosures 26.7.1 26.7.1 General Applies Applies 26.7.2 - Test temperatures Modified Modified - 26.7.2 Test temperatures Applies Applies 26.8 - Thermal endurance to heat Modified Modified - 26.8 Thermal endurance to heat Applies Applies 26.9 26.9 Thermal endurance to cold Applies Applies 26.10 26.10 Resistance to light 26.10.1 26.10.1 General Applies Applies 26.10.2 26.10.2 Light exposure Applies Applies 26.10.3 26.10.3 Acceptace criteria Applies Applies 26.11 26.11 Resistance to chemical agents for Group I electrical equipment Excluded Excluded 26.12 26.12 Earth continuity Applies Applies 26.13 26.13 Surface resistance test of parts of enclosures of non-metallic materials Applies Applies 26.14 26.14 Measurement of capacitance 26.14.1 26.14.1 General Applies Applies 26.14.2 26.14.2 Test procedure Applies Applies 26.15 26.15 Verification of ratings of ventilating fans Excluded Excluded 26.16 26.16 Alternative qualification of elastomeric sealing Orings Applies Applies - 26.17 Transferred charge test Applies Applies 27 27 Routine tests Applies Applies 28 28 Manufacturers responsibility Applies Applies 29 29 Marking 29.1 29.1 Applicability Applies Applies 29.2 29.2 Location Applies Applies 29.3 29.3 General Applies Applies 29.4 29.4 Ex marking for explosive gas atmospheres Applies Applies 29.5 29.5 Ex marking for explosive dust atmosp...
  • Explosive atmospheres - Part 15: Equipment protection by type of protection 'n' - UL 60079-15 - UL Standards & Engagement
    UL Standards & Engagement
  • Explosive atmospheres - Part 15: Equipment protection by type of protection - UL 60079-15 - UL Standards & Engagement
    UL Standards & Engagement
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Description
This part of IEC 60079 document specifies requirements for the construction, testing and marking for Group II electrical equipment with type of protection "n" which includes; sealed devices "nC", hermetically sealed devices "nC", non-incendive components "nC" and restricted breathing enclosures "nR" intended for use in explosive gas atmospheres. This part of IEC 60079 document applies to electrical equipment where the rated input voltage does not exceed 15 kV r.m.s. AC or DC including where the internal working voltages of the Ex product exceeds 15 kV, for example starters for HID luminaires. Where references are made to IEC, IEC/IEEE, ISO, ISO/IEC standards, the referenced requirements found in these standards shall apply as modified by any applicable US National Differences for the standard (see Clause 2). This part of IEC 60079 document supplements and modifies the general requirements of IEC 60079-0 UL 60079-0 , except as indicated in Table 1. Where a requirement of this part of IEC 60079 document conflicts with a requirement of IEC 60079-0 UL 60079-0 , the requirement of this part of IEC 60079 document takes precedence. Clause of IEC 60079-0 UL 60079-0 IEC 60079-0 UL 60079-0 clause application to IEC 60079-15 UL 60079-15 Ed. 6.0 ( 2011 2013 ) Ed. 7.0 (future edition) 2019 Clause / Subclause title Protected sparking Restricted breathing (informative) (informative) (normative) "nC" "nR" 3 3 Definitions Applies Applies 4 4 Equipment grouping 4.1 4.1 Group I Excluded Excluded 4.2 4.2 Group II Applies Applies 4.3 4.3 Group III Excluded Excluded 4.4 4.4 Equipment for a particular explosive atmosphere Applies Applies 5 5 Temperatures 5.1 5.1 Environmental influences Applies Applies 5.2 5.2 Service temperature Applies Applies 5.3 5.3 Maximum surface temperature 5.3.1 5.3.1 Determination of maximum surface temperature Applies Applies 5.3.2 5.3.2 Limitation of maximum surface temperature 5.3.2.1 5.3.2.1 Group I equipment Excluded Excluded 5.3.2.2 5.3.2.2 Group II equipment Applies Applies 5.3.2.3 5.3.2.3 Group III electrical equipment Excluded Excluded 5.3.3 5.3.3 Small component temperature for Group I and Group II equipment Applies Excluded - 5.3.4 Component temperature of smooth surfaces for Group I or Group II equipment (Applies for smaller than 10 000 mm 2 only) Applies Excluded 6 6 Requirements for all electrical apparatus 6.1 6.1 General Applies Applies 6.2 6.2 Mechanical strength Applies Applies 6.3 6.3 Opening times Excluded Applies 6.4 6.4 Circulating currents Applies Applies 6.5 6.5 Gasket retention Applies Applies 6.6 6.6 Electromagnetic and ultrasonic radiating equipment Applies Applies 7 7 Non-metallic enclosures and non-metallic parts of enclosures 7.1 7.1 General 7.1.1 7.1.1 Applicability Applies Applies 7.1.2 7.1.2 Specification of materials Applies Applies 7.2 7.2 Thermal endurance 7.2.1 7.2.1 Tests for thermal resistance Applies Applies 7.2.2 - Material selection Modified Modified - 7.2.2 Material selection Applies Applies 7.2.3 7.2.3 Alternative qualification for elastomeric sealing O-rings Applies Applies 7.3 7.3 Resistance to ultraviolet light Applies Applies 7.4 7.4 Electrostatic charges on external non-metallic materials 7.4.1 7.4.1 Applicability Applies Applies 7.4.2 7.4.2 Avoidance of build-up of electrostatic charge on Group I or Group II electrical equipment Applies Applies 7.4.3 7.4.3 Avoidance of build-up of electrostatic charge on equipment for Group III Excluded Excluded 7.5 7.5 External conductive parts Applies Applies 8 8 Metallic enclosures and metallic parts of enclosures 8.1 8.1 Material composition Applies Applies 8.2 8.2 Group I Excluded Excluded 8.3 8.3 Group II Applies Applies 8.4 8.4 Group III Excluded Excluded NR 8.5 Copper alloys Applies Applies 9 9 Fasteners 9.1 9.1 General Applies Applies 9.2 9.2 Special fasteners Excluded Excluded 9.3 9.3 Holes for special fasteners Excluded Excluded 9.3.3 - Hexagon socket set screws Excluded Excluded - 9.4 Hexagon socket set screws Excluded Excluded 10 10 Interlocking devices Excluded Excluded 11 11 Bushings Applies Applies 12 - Materials used for cementing Modified Modified - 12 Reserved for future use. Modified Modified 13 13 Ex components Applies Applies 14 14 Connection facilities Applies Applies 15 15 Connection facilities for earthing and bonding conductors Applies Applies 16 16 Entries into enclosures Applies Applies 17 17 Supplementary requirements for electric machines Excluded Excluded 18 18 Supplementary requirements for switchgear Excluded 18.1 18.1 Flammable dielectric Excluded Applies 18.2 18.2 Disconnectors Excluded Applies 18.3 18.3 Group I - Provisions for locking Excluded Excluded 18.4 18.4 Doors and covers Excluded Applies 19 - Supplementary requirements for fuses Excluded Excluded - 19 Reserved for future use. Excluded Excluded 20 20 Supplementary requirements for plugs and sockets 20.1 20.1 General Applies Applies 20.2 20.2 Explosive gas atmospheres Excluded Excluded 20.3 20.3 Explosive dust atmospheres Excluded Excluded 20.4 20.4 Energized plugs Applies Applies 21 21 Supplementary requirements for luminaires 21.1 21.1 General Applies Applies 21.2 21.2 Covers for luminaires of EPL Mb, EPL Gb or EPL Db Excluded Excluded 21.3 21.3 Covers for luminaires of EPL Gc or EPL Dc Applies Applies 21.4 21.4 Sodium lamps Applies Applies 22 22 Supplementary requirements for caplights and handlights 22.1 22.1 Group I caplights Excluded Excluded 22.2 22.2 Group II and Group III caplights and handlights Excluded Applies 23 23 Equipment incorporating cells and batteries Applies Applies 23.12 23.12 Replacement battery pack Applies Applies 24 24 Documentation Modified Modified 25 25 Compliance of prototype or sample with documents Applies Applies 26 26 Type tests Applies Applies 26.4 26.4 Tests of enclosures 26.4.1 26.4.1 Order of tests 26.4.1.1 26.4.1.1 Metallic enclosures, metallic parts of enclosures and glass or ceramic parts of enclosures Applies Applies 26.4.1.2 26.4.1.2 Non-metallic enclosures or non-metallic parts of enclosures 26.4.1.2.1 26.4.1.2.1 General Applies Applies 26.4.1.2.2 26.4.1.2.2 Group I electrical equipment Excluded Excluded 26.4.1.2.3 - Group II and Group III electrical equipment Modified Modified - 26.4.1.2.3 Group II and Group III electrical equipment Applies Applies 26.4.2 26.4.2 Resistance to impact Applies Applies 26.4.3 26.4.3 Drop test Applies Applies 26.4.4 26.4.4 Acceptance criteria Applies Applies 26.4.5 26.4.5 Degree of protection by enclosure Applies Applies 26.5 26.5 Thermal tests 26.5.1 26.5.1 Temperature measurement Applies Applies 26.5.1.1 26.5.1.1 General Applies Applies 26.5.1.2 26.5.1.2 Service Temperature Applies Applies 26.5.2 26.5.2 Thermal shock test Applies Applies 26.5.3 26.5.3 Small component ignition test (Group I and Group II) Applies Excluded 26.6 26.6 Torque test for bushings Applies Applies 26.7 26.7 Non-metallic enclosures or non-metallic parts of enclosures 26.7.1 26.7.1 General Applies Applies 26.7.2 - Test temperatures Modified Modified - 26.7.2 Test temperatures Applies Applies 26.8 - Thermal endurance to heat Modified Modified - 26.8 Thermal endurance to heat Applies Applies 26.9 26.9 Thermal endurance to cold Applies Applies 26.10 26.10 Resistance to light 26.10.1 26.10.1 General Applies Applies 26.10.2 26.10.2 Light exposure Applies Applies 26.10.3 26.10.3 Acceptace criteria Applies Applies 26.11 26.11 Resistance to chemical agents for Group I electrical equipment Excluded Excluded 26.12 26.12 Earth continuity Applies Applies 26.13 26.13 Surface resistance test of parts of enclosures of non-metallic materials Applies Applies 26.14 26.14 Measurement of capacitance 26.14.1 26.14.1 General Applies Applies 26.14.2 26.14.2 Test procedure Applies Applies 26.15 26.15 Verification of ratings of ventilating fans Excluded Excluded 26.16 26.16 Alternative qualification of elastomeric sealing Orings Applies Applies - 26.17 Transferred charge test Applies Applies 27 27 Routine tests Applies Applies 28 28 Manufacturers responsibility Applies Applies 29 29 Marking 29.1 29.1 Applicability Applies Applies 29.2 29.2 Location Applies Applies 29.3 29.3 General Applies Applies 29.4 29.4 Ex marking for explosive gas atmospheres Applies Applies 29.5 29.5 Ex marking for explosive dust atmosp...
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Explosive atmospheres - Part 15: Equipment protection by type of protection 'n' - UL 60079-15 - UL Standards & Engagement
UL Standards & Engagement
Evanston, IL, United States
Explosive atmospheres - Part 15: Equipment protection by type of protection 'n'
UL 60079-15
Explosive atmospheres - Part 15: Equipment protection by type of protection 'n' UL 60079-15
This part of IEC 60079 document specifies requirements for the construction, testing and marking for Group II electrical equipment with type of protection "n" which includes; sealed devices "nC", hermetically sealed devices "nC", non-incendive components "nC" and restricted breathing enclosures "nR" intended for use in explosive gas atmospheres. This part of IEC 60079 document applies to electrical equipment where the rated input voltage does not exceed 15 kV r.m.s. AC or DC including where the internal working voltages of the Ex product exceeds 15 kV, for example starters for HID luminaires. Where references are made to IEC, IEC/IEEE, ISO, ISO/IEC standards, the referenced requirements found in these standards shall apply as modified by any applicable US National Differences for the standard (see Clause 2). This part of IEC 60079 document supplements and modifies the general requirements of IEC 60079-0 UL 60079-0 , except as indicated in Table 1. Where a requirement of this part of IEC 60079 document conflicts with a requirement of IEC 60079-0 UL 60079-0 , the requirement of this part of IEC 60079 document takes precedence. Clause of IEC 60079-0 UL 60079-0 IEC 60079-0 UL 60079-0 clause application to IEC 60079-15 UL 60079-15 Ed. 6.0 ( 2011 2013 ) Ed. 7.0 (future edition) 2019 Clause / Subclause title Protected sparking Restricted breathing (informative) (informative) (normative) "nC" "nR" 3 3 Definitions Applies Applies 4 4 Equipment grouping 4.1 4.1 Group I Excluded Excluded 4.2 4.2 Group II Applies Applies 4.3 4.3 Group III Excluded Excluded 4.4 4.4 Equipment for a particular explosive atmosphere Applies Applies 5 5 Temperatures 5.1 5.1 Environmental influences Applies Applies 5.2 5.2 Service temperature Applies Applies 5.3 5.3 Maximum surface temperature 5.3.1 5.3.1 Determination of maximum surface temperature Applies Applies 5.3.2 5.3.2 Limitation of maximum surface temperature 5.3.2.1 5.3.2.1 Group I equipment Excluded Excluded 5.3.2.2 5.3.2.2 Group II equipment Applies Applies 5.3.2.3 5.3.2.3 Group III electrical equipment Excluded Excluded 5.3.3 5.3.3 Small component temperature for Group I and Group II equipment Applies Excluded - 5.3.4 Component temperature of smooth surfaces for Group I or Group II equipment (Applies for smaller than 10 000 mm 2 only) Applies Excluded 6 6 Requirements for all electrical apparatus 6.1 6.1 General Applies Applies 6.2 6.2 Mechanical strength Applies Applies 6.3 6.3 Opening times Excluded Applies 6.4 6.4 Circulating currents Applies Applies 6.5 6.5 Gasket retention Applies Applies 6.6 6.6 Electromagnetic and ultrasonic radiating equipment Applies Applies 7 7 Non-metallic enclosures and non-metallic parts of enclosures 7.1 7.1 General 7.1.1 7.1.1 Applicability Applies Applies 7.1.2 7.1.2 Specification of materials Applies Applies 7.2 7.2 Thermal endurance 7.2.1 7.2.1 Tests for thermal resistance Applies Applies 7.2.2 - Material selection Modified Modified - 7.2.2 Material selection Applies Applies 7.2.3 7.2.3 Alternative qualification for elastomeric sealing O-rings Applies Applies 7.3 7.3 Resistance to ultraviolet light Applies Applies 7.4 7.4 Electrostatic charges on external non-metallic materials 7.4.1 7.4.1 Applicability Applies Applies 7.4.2 7.4.2 Avoidance of build-up of electrostatic charge on Group I or Group II electrical equipment Applies Applies 7.4.3 7.4.3 Avoidance of build-up of electrostatic charge on equipment for Group III Excluded Excluded 7.5 7.5 External conductive parts Applies Applies 8 8 Metallic enclosures and metallic parts of enclosures 8.1 8.1 Material composition Applies Applies 8.2 8.2 Group I Excluded Excluded 8.3 8.3 Group II Applies Applies 8.4 8.4 Group III Excluded Excluded NR 8.5 Copper alloys Applies Applies 9 9 Fasteners 9.1 9.1 General Applies Applies 9.2 9.2 Special fasteners Excluded Excluded 9.3 9.3 Holes for special fasteners Excluded Excluded 9.3.3 - Hexagon socket set screws Excluded Excluded - 9.4 Hexagon socket set screws Excluded Excluded 10 10 Interlocking devices Excluded Excluded 11 11 Bushings Applies Applies 12 - Materials used for cementing Modified Modified - 12 Reserved for future use. Modified Modified 13 13 Ex components Applies Applies 14 14 Connection facilities Applies Applies 15 15 Connection facilities for earthing and bonding conductors Applies Applies 16 16 Entries into enclosures Applies Applies 17 17 Supplementary requirements for electric machines Excluded Excluded 18 18 Supplementary requirements for switchgear Excluded 18.1 18.1 Flammable dielectric Excluded Applies 18.2 18.2 Disconnectors Excluded Applies 18.3 18.3 Group I - Provisions for locking Excluded Excluded 18.4 18.4 Doors and covers Excluded Applies 19 - Supplementary requirements for fuses Excluded Excluded - 19 Reserved for future use. Excluded Excluded 20 20 Supplementary requirements for plugs and sockets 20.1 20.1 General Applies Applies 20.2 20.2 Explosive gas atmospheres Excluded Excluded 20.3 20.3 Explosive dust atmospheres Excluded Excluded 20.4 20.4 Energized plugs Applies Applies 21 21 Supplementary requirements for luminaires 21.1 21.1 General Applies Applies 21.2 21.2 Covers for luminaires of EPL Mb, EPL Gb or EPL Db Excluded Excluded 21.3 21.3 Covers for luminaires of EPL Gc or EPL Dc Applies Applies 21.4 21.4 Sodium lamps Applies Applies 22 22 Supplementary requirements for caplights and handlights 22.1 22.1 Group I caplights Excluded Excluded 22.2 22.2 Group II and Group III caplights and handlights Excluded Applies 23 23 Equipment incorporating cells and batteries Applies Applies 23.12 23.12 Replacement battery pack Applies Applies 24 24 Documentation Modified Modified 25 25 Compliance of prototype or sample with documents Applies Applies 26 26 Type tests Applies Applies 26.4 26.4 Tests of enclosures 26.4.1 26.4.1 Order of tests 26.4.1.1 26.4.1.1 Metallic enclosures, metallic parts of enclosures and glass or ceramic parts of enclosures Applies Applies 26.4.1.2 26.4.1.2 Non-metallic enclosures or non-metallic parts of enclosures 26.4.1.2.1 26.4.1.2.1 General Applies Applies 26.4.1.2.2 26.4.1.2.2 Group I electrical equipment Excluded Excluded 26.4.1.2.3 - Group II and Group III electrical equipment Modified Modified - 26.4.1.2.3 Group II and Group III electrical equipment Applies Applies 26.4.2 26.4.2 Resistance to impact Applies Applies 26.4.3 26.4.3 Drop test Applies Applies 26.4.4 26.4.4 Acceptance criteria Applies Applies 26.4.5 26.4.5 Degree of protection by enclosure Applies Applies 26.5 26.5 Thermal tests 26.5.1 26.5.1 Temperature measurement Applies Applies 26.5.1.1 26.5.1.1 General Applies Applies 26.5.1.2 26.5.1.2 Service Temperature Applies Applies 26.5.2 26.5.2 Thermal shock test Applies Applies 26.5.3 26.5.3 Small component ignition test (Group I and Group II) Applies Excluded 26.6 26.6 Torque test for bushings Applies Applies 26.7 26.7 Non-metallic enclosures or non-metallic parts of enclosures 26.7.1 26.7.1 General Applies Applies 26.7.2 - Test temperatures Modified Modified - 26.7.2 Test temperatures Applies Applies 26.8 - Thermal endurance to heat Modified Modified - 26.8 Thermal endurance to heat Applies Applies 26.9 26.9 Thermal endurance to cold Applies Applies 26.10 26.10 Resistance to light 26.10.1 26.10.1 General Applies Applies 26.10.2 26.10.2 Light exposure Applies Applies 26.10.3 26.10.3 Acceptace criteria Applies Applies 26.11 26.11 Resistance to chemical agents for Group I electrical equipment Excluded Excluded 26.12 26.12 Earth continuity Applies Applies 26.13 26.13 Surface resistance test of parts of enclosures of non-metallic materials Applies Applies 26.14 26.14 Measurement of capacitance 26.14.1 26.14.1 General Applies Applies 26.14.2 26.14.2 Test procedure Applies Applies 26.15 26.15 Verification of ratings of ventilating fans Excluded Excluded 26.16 26.16 Alternative qualification of elastomeric sealing Orings Applies Applies - 26.17 Transferred charge test Applies Applies 27 27 Routine tests Applies Applies 28 28 Manufacturers responsibility Applies Applies 29 29 Marking 29.1 29.1 Applicability Applies Applies 29.2 29.2 Location Applies Applies 29.3 29.3 General Applies Applies 29.4 29.4 Ex marking for explosive gas atmospheres Applies Applies 29.5 29.5 Ex marking for explosive dust atmosp...

This

part of IEC 60079

document

specifies requirements for the construction, testing and marking for Group II electrical equipment with type of protection "n" which includes; sealed devices "nC", hermetically sealed devices "nC", non-incendive components "nC" and restricted breathing enclosures "nR" intended for use in explosive gas atmospheres. This

part of IEC 60079

document

applies to electrical equipment where the rated input voltage does not exceed 15 kV r.m.s. AC or DC including where the internal working voltages of the Ex product exceeds 15 kV, for example starters for HID luminaires.

Where references are made to IEC, IEC/IEEE, ISO, ISO/IEC standards, the referenced requirements found in these standards shall apply as modified by any applicable US National Differences for the standard (see Clause 2).

This

part of IEC 60079

document

supplements and modifies the general requirements of

IEC 60079-0

UL 60079-0

, except as indicated in Table 1. Where a requirement of this

part of IEC 60079

document

conflicts with a requirement of

IEC 60079-0

UL 60079-0

, the requirement of this

part of IEC 60079

document

takes precedence.

Clause of

IEC 60079-0

UL 60079-0

IEC 60079-0

UL 60079-0

clause application to

IEC 60079-15

UL 60079-15

Ed. 6.0 (

2011

2013

)

Ed. 7.0

(future edition)

2019

Clause / Subclause title

Protected sparking

Restricted breathing

(informative)

(informative)

(normative)

"nC"

"nR"

3

3

Definitions

Applies

Applies

4

4

Equipment grouping

4.1

4.1

Group I

Excluded

Excluded

4.2

4.2

Group II

Applies

Applies

4.3

4.3

Group III

Excluded

Excluded

4.4

4.4

Equipment for a particular explosive atmosphere

Applies

Applies

5

5

Temperatures

5.1

5.1

Environmental influences

Applies

Applies

5.2

5.2

Service temperature

Applies

Applies

5.3

5.3

Maximum surface temperature

5.3.1

5.3.1

Determination of maximum surface temperature

Applies

Applies

5.3.2

5.3.2

Limitation of maximum surface temperature

5.3.2.1

5.3.2.1

Group I equipment

Excluded

Excluded

5.3.2.2

5.3.2.2

Group II equipment

Applies

Applies

5.3.2.3

5.3.2.3

Group III electrical equipment

Excluded

Excluded

5.3.3

5.3.3

Small component temperature for Group I and Group II equipment

Applies

Excluded

-

5.3.4

Component temperature of smooth surfaces for Group I or Group II equipment

(Applies for smaller than 10 000 mm

2

only)

Applies

Excluded

6

6

Requirements for all electrical apparatus

6.1

6.1

General

Applies

Applies

6.2

6.2

Mechanical strength

Applies

Applies

6.3

6.3

Opening times

Excluded

Applies

6.4

6.4

Circulating currents

Applies

Applies

6.5

6.5

Gasket retention

Applies

Applies

6.6

6.6

Electromagnetic and ultrasonic radiating equipment

Applies

Applies

7

7

Non-metallic enclosures and non-metallic parts of enclosures

7.1

7.1

General

7.1.1

7.1.1

Applicability

Applies

Applies

7.1.2

7.1.2

Specification of materials

Applies

Applies

7.2

7.2

Thermal endurance

7.2.1

7.2.1

Tests for thermal resistance

Applies

Applies

7.2.2

-

Material selection

Modified

Modified

-

7.2.2

Material selection

Applies

Applies

7.2.3

7.2.3

Alternative qualification for elastomeric sealing O-rings

Applies

Applies

7.3

7.3

Resistance to ultraviolet light

Applies

Applies

7.4

7.4

Electrostatic charges on external non-metallic materials

7.4.1

7.4.1

Applicability

Applies

Applies

7.4.2

7.4.2

Avoidance of build-up of electrostatic charge on Group I or Group II electrical equipment

Applies

Applies

7.4.3

7.4.3

Avoidance of build-up of electrostatic charge on equipment for Group III

Excluded

Excluded

7.5

7.5

External conductive parts

Applies

Applies

8

8

Metallic enclosures and metallic parts of enclosures

8.1

8.1

Material composition

Applies

Applies

8.2

8.2

Group I

Excluded

Excluded

8.3

8.3

Group II

Applies

Applies

8.4

8.4

Group III

Excluded

Excluded

NR

8.5

Copper alloys

Applies

Applies

9

9

Fasteners

9.1

9.1

General

Applies

Applies

9.2

9.2

Special fasteners

Excluded

Excluded

9.3

9.3

Holes for special fasteners

Excluded

Excluded

9.3.3

-

Hexagon socket set screws

Excluded

Excluded

-

9.4

Hexagon socket set screws

Excluded

Excluded

10

10

Interlocking devices

Excluded

Excluded

11

11

Bushings

Applies

Applies

12

-

Materials used for cementing

Modified

Modified

-

12

Reserved for future use.

Modified

Modified

13

13

Ex components

Applies

Applies

14

14

Connection facilities

Applies

Applies

15

15

Connection facilities for earthing and bonding conductors

Applies

Applies

16

16

Entries into enclosures

Applies

Applies

17

17

Supplementary requirements for electric machines

Excluded

Excluded

18

18

Supplementary requirements for switchgear

Excluded

18.1

18.1

Flammable dielectric

Excluded

Applies

18.2

18.2

Disconnectors

Excluded

Applies

18.3

18.3

Group I - Provisions for locking

Excluded

Excluded

18.4

18.4

Doors and covers

Excluded

Applies

19

-

Supplementary requirements for fuses

Excluded

Excluded

-

19

Reserved for future use.

Excluded

Excluded

20

20

Supplementary requirements for plugs and sockets

20.1

20.1

General

Applies

Applies

20.2

20.2

Explosive gas atmospheres

Excluded

Excluded

20.3

20.3

Explosive dust atmospheres

Excluded

Excluded

20.4

20.4

Energized plugs

Applies

Applies

21

21

Supplementary requirements for luminaires

21.1

21.1

General

Applies

Applies

21.2

21.2

Covers for luminaires of EPL Mb, EPL Gb or EPL Db

Excluded

Excluded

21.3

21.3

Covers for luminaires of EPL Gc or EPL Dc

Applies

Applies

21.4

21.4

Sodium lamps

Applies

Applies

22

22

Supplementary requirements for caplights and handlights

22.1

22.1

Group I caplights

Excluded

Excluded

22.2

22.2

Group II and Group III caplights and handlights

Excluded

Applies

23

23

Equipment incorporating cells and batteries

Applies

Applies

23.12

23.12

Replacement battery pack

Applies

Applies

24

24

Documentation

Modified

Modified

25

25

Compliance of prototype or sample with documents

Applies

Applies

26

26

Type tests

Applies

Applies

26.4

26.4

Tests of enclosures

26.4.1

26.4.1

Order of tests

26.4.1.1

26.4.1.1

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

Applies

Applies

26.4.1.2

26.4.1.2

Non-metallic enclosures or non-metallic parts of enclosures

26.4.1.2.1

26.4.1.2.1

General

Applies

Applies

26.4.1.2.2

26.4.1.2.2

Group I electrical equipment

Excluded

Excluded

26.4.1.2.3

-

Group II and Group III electrical equipment

Modified

Modified

-

26.4.1.2.3

Group II and Group III electrical equipment

Applies

Applies

26.4.2

26.4.2

Resistance to impact

Applies

Applies

26.4.3

26.4.3

Drop test

Applies

Applies

26.4.4

26.4.4

Acceptance criteria

Applies

Applies

26.4.5

26.4.5

Degree of protection by enclosure

Applies

Applies

26.5

26.5

Thermal tests

26.5.1

26.5.1

Temperature measurement

Applies

Applies

26.5.1.1

26.5.1.1

General

Applies

Applies

26.5.1.2

26.5.1.2

Service Temperature

Applies

Applies

26.5.2

26.5.2

Thermal shock test

Applies

Applies

26.5.3

26.5.3

Small component ignition test (Group I and Group II)

Applies

Excluded

26.6

26.6

Torque test for bushings

Applies

Applies

26.7

26.7

Non-metallic enclosures or non-metallic parts of enclosures

26.7.1

26.7.1

General

Applies

Applies

26.7.2

-

Test temperatures

Modified

Modified

-

26.7.2

Test temperatures

Applies

Applies

26.8

-

Thermal endurance to heat

Modified

Modified

-

26.8

Thermal endurance to heat

Applies

Applies

26.9

26.9

Thermal endurance to cold

Applies

Applies

26.10

26.10

Resistance to light

26.10.1

26.10.1

General

Applies

Applies

26.10.2

26.10.2

Light exposure

Applies

Applies

26.10.3

26.10.3

Acceptace criteria

Applies

Applies

26.11

26.11

Resistance to chemical agents for Group I electrical equipment

Excluded

Excluded

26.12

26.12

Earth continuity

Applies

Applies

26.13

26.13

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

Applies

Applies

26.14

26.14

Measurement of capacitance

26.14.1

26.14.1

General

Applies

Applies

26.14.2

26.14.2

Test procedure

Applies

Applies

26.15

26.15

Verification of ratings of ventilating fans

Excluded

Excluded

26.16

26.16

Alternative qualification of elastomeric sealing Orings

Applies

Applies

-

26.17

Transferred charge test

Applies

Applies

27

27

Routine tests

Applies

Applies

28

28

Manufacturers responsibility

Applies

Applies

29

29

Marking

29.1

29.1

Applicability

Applies

Applies

29.2

29.2

Location

Applies

Applies

29.3

29.3

General

Applies

Applies

29.4

29.4

Ex marking for explosive gas atmospheres

Applies

Applies

29.5

29.5

Ex marking for explosive dust atmosp...

Supplier's Site
Explosive atmospheres - Part 15: Equipment protection by type of protection - UL 60079-15 - UL Standards & Engagement
UL Standards & Engagement
Evanston, IL, United States
Explosive atmospheres - Part 15: Equipment protection by type of protection
UL 60079-15
Explosive atmospheres - Part 15: Equipment protection by type of protection UL 60079-15
This part of IEC 60079 document specifies requirements for the construction, testing and marking for Group II electrical equipment with type of protection "n" which includes; sealed devices "nC", hermetically sealed devices "nC", non-incendive components "nC" and restricted breathing enclosures "nR" intended for use in explosive gas atmospheres. This part of IEC 60079 document applies to electrical equipment where the rated input voltage does not exceed 15 kV r.m.s. AC or DC including where the internal working voltages of the Ex product exceeds 15 kV, for example starters for HID luminaires. Where references are made to IEC, IEC/IEEE, ISO, ISO/IEC standards, the referenced requirements found in these standards shall apply as modified by any applicable US National Differences for the standard (see Clause 2). This part of IEC 60079 document supplements and modifies the general requirements of IEC 60079-0 UL 60079-0 , except as indicated in Table 1. Where a requirement of this part of IEC 60079 document conflicts with a requirement of IEC 60079-0 UL 60079-0 , the requirement of this part of IEC 60079 document takes precedence. Clause of IEC 60079-0 UL 60079-0 IEC 60079-0 UL 60079-0 clause application to IEC 60079-15 UL 60079-15 Ed. 6.0 ( 2011 2013 ) Ed. 7.0 (future edition) 2019 Clause / Subclause title Protected sparking Restricted breathing (informative) (informative) (normative) "nC" "nR" 3 3 Definitions Applies Applies 4 4 Equipment grouping 4.1 4.1 Group I Excluded Excluded 4.2 4.2 Group II Applies Applies 4.3 4.3 Group III Excluded Excluded 4.4 4.4 Equipment for a particular explosive atmosphere Applies Applies 5 5 Temperatures 5.1 5.1 Environmental influences Applies Applies 5.2 5.2 Service temperature Applies Applies 5.3 5.3 Maximum surface temperature 5.3.1 5.3.1 Determination of maximum surface temperature Applies Applies 5.3.2 5.3.2 Limitation of maximum surface temperature 5.3.2.1 5.3.2.1 Group I equipment Excluded Excluded 5.3.2.2 5.3.2.2 Group II equipment Applies Applies 5.3.2.3 5.3.2.3 Group III electrical equipment Excluded Excluded 5.3.3 5.3.3 Small component temperature for Group I and Group II equipment Applies Excluded - 5.3.4 Component temperature of smooth surfaces for Group I or Group II equipment (Applies for smaller than 10 000 mm 2 only) Applies Excluded 6 6 Requirements for all electrical apparatus 6.1 6.1 General Applies Applies 6.2 6.2 Mechanical strength Applies Applies 6.3 6.3 Opening times Excluded Applies 6.4 6.4 Circulating currents Applies Applies 6.5 6.5 Gasket retention Applies Applies 6.6 6.6 Electromagnetic and ultrasonic radiating equipment Applies Applies 7 7 Non-metallic enclosures and non-metallic parts of enclosures 7.1 7.1 General 7.1.1 7.1.1 Applicability Applies Applies 7.1.2 7.1.2 Specification of materials Applies Applies 7.2 7.2 Thermal endurance 7.2.1 7.2.1 Tests for thermal resistance Applies Applies 7.2.2 - Material selection Modified Modified - 7.2.2 Material selection Applies Applies 7.2.3 7.2.3 Alternative qualification for elastomeric sealing O-rings Applies Applies 7.3 7.3 Resistance to ultraviolet light Applies Applies 7.4 7.4 Electrostatic charges on external non-metallic materials 7.4.1 7.4.1 Applicability Applies Applies 7.4.2 7.4.2 Avoidance of build-up of electrostatic charge on Group I or Group II electrical equipment Applies Applies 7.4.3 7.4.3 Avoidance of build-up of electrostatic charge on equipment for Group III Excluded Excluded 7.5 7.5 External conductive parts Applies Applies 8 8 Metallic enclosures and metallic parts of enclosures 8.1 8.1 Material composition Applies Applies 8.2 8.2 Group I Excluded Excluded 8.3 8.3 Group II Applies Applies 8.4 8.4 Group III Excluded Excluded NR 8.5 Copper alloys Applies Applies 9 9 Fasteners 9.1 9.1 General Applies Applies 9.2 9.2 Special fasteners Excluded Excluded 9.3 9.3 Holes for special fasteners Excluded Excluded 9.3.3 - Hexagon socket set screws Excluded Excluded - 9.4 Hexagon socket set screws Excluded Excluded 10 10 Interlocking devices Excluded Excluded 11 11 Bushings Applies Applies 12 - Materials used for cementing Modified Modified - 12 Reserved for future use. Modified Modified 13 13 Ex components Applies Applies 14 14 Connection facilities Applies Applies 15 15 Connection facilities for earthing and bonding conductors Applies Applies 16 16 Entries into enclosures Applies Applies 17 17 Supplementary requirements for electric machines Excluded Excluded 18 18 Supplementary requirements for switchgear Excluded 18.1 18.1 Flammable dielectric Excluded Applies 18.2 18.2 Disconnectors Excluded Applies 18.3 18.3 Group I - Provisions for locking Excluded Excluded 18.4 18.4 Doors and covers Excluded Applies 19 - Supplementary requirements for fuses Excluded Excluded - 19 Reserved for future use. Excluded Excluded 20 20 Supplementary requirements for plugs and sockets 20.1 20.1 General Applies Applies 20.2 20.2 Explosive gas atmospheres Excluded Excluded 20.3 20.3 Explosive dust atmospheres Excluded Excluded 20.4 20.4 Energized plugs Applies Applies 21 21 Supplementary requirements for luminaires 21.1 21.1 General Applies Applies 21.2 21.2 Covers for luminaires of EPL Mb, EPL Gb or EPL Db Excluded Excluded 21.3 21.3 Covers for luminaires of EPL Gc or EPL Dc Applies Applies 21.4 21.4 Sodium lamps Applies Applies 22 22 Supplementary requirements for caplights and handlights 22.1 22.1 Group I caplights Excluded Excluded 22.2 22.2 Group II and Group III caplights and handlights Excluded Applies 23 23 Equipment incorporating cells and batteries Applies Applies 23.12 23.12 Replacement battery pack Applies Applies 24 24 Documentation Modified Modified 25 25 Compliance of prototype or sample with documents Applies Applies 26 26 Type tests Applies Applies 26.4 26.4 Tests of enclosures 26.4.1 26.4.1 Order of tests 26.4.1.1 26.4.1.1 Metallic enclosures, metallic parts of enclosures and glass or ceramic parts of enclosures Applies Applies 26.4.1.2 26.4.1.2 Non-metallic enclosures or non-metallic parts of enclosures 26.4.1.2.1 26.4.1.2.1 General Applies Applies 26.4.1.2.2 26.4.1.2.2 Group I electrical equipment Excluded Excluded 26.4.1.2.3 - Group II and Group III electrical equipment Modified Modified - 26.4.1.2.3 Group II and Group III electrical equipment Applies Applies 26.4.2 26.4.2 Resistance to impact Applies Applies 26.4.3 26.4.3 Drop test Applies Applies 26.4.4 26.4.4 Acceptance criteria Applies Applies 26.4.5 26.4.5 Degree of protection by enclosure Applies Applies 26.5 26.5 Thermal tests 26.5.1 26.5.1 Temperature measurement Applies Applies 26.5.1.1 26.5.1.1 General Applies Applies 26.5.1.2 26.5.1.2 Service Temperature Applies Applies 26.5.2 26.5.2 Thermal shock test Applies Applies 26.5.3 26.5.3 Small component ignition test (Group I and Group II) Applies Excluded 26.6 26.6 Torque test for bushings Applies Applies 26.7 26.7 Non-metallic enclosures or non-metallic parts of enclosures 26.7.1 26.7.1 General Applies Applies 26.7.2 - Test temperatures Modified Modified - 26.7.2 Test temperatures Applies Applies 26.8 - Thermal endurance to heat Modified Modified - 26.8 Thermal endurance to heat Applies Applies 26.9 26.9 Thermal endurance to cold Applies Applies 26.10 26.10 Resistance to light 26.10.1 26.10.1 General Applies Applies 26.10.2 26.10.2 Light exposure Applies Applies 26.10.3 26.10.3 Acceptace criteria Applies Applies 26.11 26.11 Resistance to chemical agents for Group I electrical equipment Excluded Excluded 26.12 26.12 Earth continuity Applies Applies 26.13 26.13 Surface resistance test of parts of enclosures of non-metallic materials Applies Applies 26.14 26.14 Measurement of capacitance 26.14.1 26.14.1 General Applies Applies 26.14.2 26.14.2 Test procedure Applies Applies 26.15 26.15 Verification of ratings of ventilating fans Excluded Excluded 26.16 26.16 Alternative qualification of elastomeric sealing Orings Applies Applies - 26.17 Transferred charge test Applies Applies 27 27 Routine tests Applies Applies 28 28 Manufacturers responsibility Applies Applies 29 29 Marking 29.1 29.1 Applicability Applies Applies 29.2 29.2 Location Applies Applies 29.3 29.3 General Applies Applies 29.4 29.4 Ex marking for explosive gas atmospheres Applies Applies 29.5 29.5 Ex marking for explosive dust atmosp...

This

part of IEC 60079

document

specifies requirements for the construction, testing and marking for Group II electrical equipment with type of protection "n" which includes; sealed devices "nC", hermetically sealed devices "nC", non-incendive components "nC" and restricted breathing enclosures "nR" intended for use in explosive gas atmospheres. This

part of IEC 60079

document

applies to electrical equipment where the rated input voltage does not exceed 15 kV r.m.s. AC or DC including where the internal working voltages of the Ex product exceeds 15 kV, for example starters for HID luminaires.

Where references are made to IEC, IEC/IEEE, ISO, ISO/IEC standards, the referenced requirements found in these standards shall apply as modified by any applicable US National Differences for the standard (see Clause 2).

This

part of IEC 60079

document

supplements and modifies the general requirements of

IEC 60079-0

UL 60079-0

, except as indicated in Table 1. Where a requirement of this

part of IEC 60079

document

conflicts with a requirement of

IEC 60079-0

UL 60079-0

, the requirement of this

part of IEC 60079

document

takes precedence.

Clause of

IEC 60079-0

UL 60079-0

IEC 60079-0

UL 60079-0

clause application to

IEC 60079-15

UL 60079-15

Ed. 6.0 (

2011

2013

)

Ed. 7.0

(future edition)

2019

Clause / Subclause title

Protected sparking

Restricted breathing

(informative)

(informative)

(normative)

"nC"

"nR"

3

3

Definitions

Applies

Applies

4

4

Equipment grouping

4.1

4.1

Group I

Excluded

Excluded

4.2

4.2

Group II

Applies

Applies

4.3

4.3

Group III

Excluded

Excluded

4.4

4.4

Equipment for a particular explosive atmosphere

Applies

Applies

5

5

Temperatures

5.1

5.1

Environmental influences

Applies

Applies

5.2

5.2

Service temperature

Applies

Applies

5.3

5.3

Maximum surface temperature

5.3.1

5.3.1

Determination of maximum surface temperature

Applies

Applies

5.3.2

5.3.2

Limitation of maximum surface temperature

5.3.2.1

5.3.2.1

Group I equipment

Excluded

Excluded

5.3.2.2

5.3.2.2

Group II equipment

Applies

Applies

5.3.2.3

5.3.2.3

Group III electrical equipment

Excluded

Excluded

5.3.3

5.3.3

Small component temperature for Group I and Group II equipment

Applies

Excluded

-

5.3.4

Component temperature of smooth surfaces for Group I or Group II equipment

(Applies for smaller than 10 000 mm

2

only)

Applies

Excluded

6

6

Requirements for all electrical apparatus

6.1

6.1

General

Applies

Applies

6.2

6.2

Mechanical strength

Applies

Applies

6.3

6.3

Opening times

Excluded

Applies

6.4

6.4

Circulating currents

Applies

Applies

6.5

6.5

Gasket retention

Applies

Applies

6.6

6.6

Electromagnetic and ultrasonic radiating equipment

Applies

Applies

7

7

Non-metallic enclosures and non-metallic parts of enclosures

7.1

7.1

General

7.1.1

7.1.1

Applicability

Applies

Applies

7.1.2

7.1.2

Specification of materials

Applies

Applies

7.2

7.2

Thermal endurance

7.2.1

7.2.1

Tests for thermal resistance

Applies

Applies

7.2.2

-

Material selection

Modified

Modified

-

7.2.2

Material selection

Applies

Applies

7.2.3

7.2.3

Alternative qualification for elastomeric sealing O-rings

Applies

Applies

7.3

7.3

Resistance to ultraviolet light

Applies

Applies

7.4

7.4

Electrostatic charges on external non-metallic materials

7.4.1

7.4.1

Applicability

Applies

Applies

7.4.2

7.4.2

Avoidance of build-up of electrostatic charge on Group I or Group II electrical equipment

Applies

Applies

7.4.3

7.4.3

Avoidance of build-up of electrostatic charge on equipment for Group III

Excluded

Excluded

7.5

7.5

External conductive parts

Applies

Applies

8

8

Metallic enclosures and metallic parts of enclosures

8.1

8.1

Material composition

Applies

Applies

8.2

8.2

Group I

Excluded

Excluded

8.3

8.3

Group II

Applies

Applies

8.4

8.4

Group III

Excluded

Excluded

NR

8.5

Copper alloys

Applies

Applies

9

9

Fasteners

9.1

9.1

General

Applies

Applies

9.2

9.2

Special fasteners

Excluded

Excluded

9.3

9.3

Holes for special fasteners

Excluded

Excluded

9.3.3

-

Hexagon socket set screws

Excluded

Excluded

-

9.4

Hexagon socket set screws

Excluded

Excluded

10

10

Interlocking devices

Excluded

Excluded

11

11

Bushings

Applies

Applies

12

-

Materials used for cementing

Modified

Modified

-

12

Reserved for future use.

Modified

Modified

13

13

Ex components

Applies

Applies

14

14

Connection facilities

Applies

Applies

15

15

Connection facilities for earthing and bonding conductors

Applies

Applies

16

16

Entries into enclosures

Applies

Applies

17

17

Supplementary requirements for electric machines

Excluded

Excluded

18

18

Supplementary requirements for switchgear

Excluded

18.1

18.1

Flammable dielectric

Excluded

Applies

18.2

18.2

Disconnectors

Excluded

Applies

18.3

18.3

Group I - Provisions for locking

Excluded

Excluded

18.4

18.4

Doors and covers

Excluded

Applies

19

-

Supplementary requirements for fuses

Excluded

Excluded

-

19

Reserved for future use.

Excluded

Excluded

20

20

Supplementary requirements for plugs and sockets

20.1

20.1

General

Applies

Applies

20.2

20.2

Explosive gas atmospheres

Excluded

Excluded

20.3

20.3

Explosive dust atmospheres

Excluded

Excluded

20.4

20.4

Energized plugs

Applies

Applies

21

21

Supplementary requirements for luminaires

21.1

21.1

General

Applies

Applies

21.2

21.2

Covers for luminaires of EPL Mb, EPL Gb or EPL Db

Excluded

Excluded

21.3

21.3

Covers for luminaires of EPL Gc or EPL Dc

Applies

Applies

21.4

21.4

Sodium lamps

Applies

Applies

22

22

Supplementary requirements for caplights and handlights

22.1

22.1

Group I caplights

Excluded

Excluded

22.2

22.2

Group II and Group III caplights and handlights

Excluded

Applies

23

23

Equipment incorporating cells and batteries

Applies

Applies

23.12

23.12

Replacement battery pack

Applies

Applies

24

24

Documentation

Modified

Modified

25

25

Compliance of prototype or sample with documents

Applies

Applies

26

26

Type tests

Applies

Applies

26.4

26.4

Tests of enclosures

26.4.1

26.4.1

Order of tests

26.4.1.1

26.4.1.1

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

Applies

Applies

26.4.1.2

26.4.1.2

Non-metallic enclosures or non-metallic parts of enclosures

26.4.1.2.1

26.4.1.2.1

General

Applies

Applies

26.4.1.2.2

26.4.1.2.2

Group I electrical equipment

Excluded

Excluded

26.4.1.2.3

-

Group II and Group III electrical equipment

Modified

Modified

-

26.4.1.2.3

Group II and Group III electrical equipment

Applies

Applies

26.4.2

26.4.2

Resistance to impact

Applies

Applies

26.4.3

26.4.3

Drop test

Applies

Applies

26.4.4

26.4.4

Acceptance criteria

Applies

Applies

26.4.5

26.4.5

Degree of protection by enclosure

Applies

Applies

26.5

26.5

Thermal tests

26.5.1

26.5.1

Temperature measurement

Applies

Applies

26.5.1.1

26.5.1.1

General

Applies

Applies

26.5.1.2

26.5.1.2

Service Temperature

Applies

Applies

26.5.2

26.5.2

Thermal shock test

Applies

Applies

26.5.3

26.5.3

Small component ignition test (Group I and Group II)

Applies

Excluded

26.6

26.6

Torque test for bushings

Applies

Applies

26.7

26.7

Non-metallic enclosures or non-metallic parts of enclosures

26.7.1

26.7.1

General

Applies

Applies

26.7.2

-

Test temperatures

Modified

Modified

-

26.7.2

Test temperatures

Applies

Applies

26.8

-

Thermal endurance to heat

Modified

Modified

-

26.8

Thermal endurance to heat

Applies

Applies

26.9

26.9

Thermal endurance to cold

Applies

Applies

26.10

26.10

Resistance to light

26.10.1

26.10.1

General

Applies

Applies

26.10.2

26.10.2

Light exposure

Applies

Applies

26.10.3

26.10.3

Acceptace criteria

Applies

Applies

26.11

26.11

Resistance to chemical agents for Group I electrical equipment

Excluded

Excluded

26.12

26.12

Earth continuity

Applies

Applies

26.13

26.13

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

Applies

Applies

26.14

26.14

Measurement of capacitance

26.14.1

26.14.1

General

Applies

Applies

26.14.2

26.14.2

Test procedure

Applies

Applies

26.15

26.15

Verification of ratings of ventilating fans

Excluded

Excluded

26.16

26.16

Alternative qualification of elastomeric sealing Orings

Applies

Applies

-

26.17

Transferred charge test

Applies

Applies

27

27

Routine tests

Applies

Applies

28

28

Manufacturers responsibility

Applies

Applies

29

29

Marking

29.1

29.1

Applicability

Applies

Applies

29.2

29.2

Location

Applies

Applies

29.3

29.3

General

Applies

Applies

29.4

29.4

Ex marking for explosive gas atmospheres

Applies

Applies

29.5

29.5

Ex marking for explosive dust atmosp...

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Technical Specifications

  UL Standards & Engagement
Product Category Standards and Technical Documents
Product Number UL 60079-15
Product Name Explosive atmospheres - Part 15: Equipment protection by type of protection 'n'
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