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BS EN 60079-30-1:2017
Explosive atmospheres Electrical resistance trace heating. General and testing requirements
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| Označení normy: | BS EN 60079-30-1:2017 |
| Počet stran: | 74 |
| Vydáno: | 2017-07-31 |
| ISBN: | 978 0 580 79820 7 |
| Status: | Standard |
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BS EN 60079-30-1:2017
This standard BS EN 60079-30-1:2017 Explosive atmospheres is classified in these ICS categories:
- 29.260.20 Electrical apparatus for explosive atmospheres
This part of IEC 60079 specifies general and testing requirements for electrical resistance trace heaters for application in explosive atmospheres with the exclusion of those for EPL Ga and Da. This standard covers trace heaters that comprise either factory or field (work-site) assembled units, and which may be series trace heaters, parallel trace heaters, trace heater pads, or trace heater panels that have been assembled and/or terminated in accordance with the manufacturer’s instructions.
This standard also includes requirements for termination assemblies and control methods used with trace heating systems. The explosive atmospheres referred to in this standard are those defined in IEC 60079-10-1 and IEC 60079-10-2 .
Text deleted
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
Application or exclusion of specific clauses of IEC 60079-0
| IEC 60079-0 | Electrical resistance trace heaters and integral components | Terminations as separate components | ||
|---|---|---|---|---|
| Ed. 6.0 (2011) (informative) | Clause / Subclause title (normative) | Group I and Group II | Group III | |
| 1 | Scope | Applies | Applies | Applies |
| 2 | Normative references | Applies | Applies | Applies |
| 3 | Terms and definitions | Applies, except ambient temperature, see 3.1 | Applies, except ambient temperature, see 3.1 | Applies, except ambient temperature, see 3.1 |
| 4 | Equipment grouping | Applies | Applies | Applies |
| 4.1 | Group I | Applies | Excluded | Applies |
| 4.2 | Group II | Applies, always IIC | Excluded | Applies |
| 4.3 | Group III | Excluded | Applies, outside of thermal insulation only, always IIIC | Applies, outside of thermal insulation only |
| 4.4 | Equipment for a particular explosive atmosphere | Excluded | Excluded | Applies |
| 5.1 | Environmental influences | Applies | Applies | Applies |
| 5.1.1 | Ambient temperature | Replaced by 6.1e) | Replaced by 6.1e) | Applies, see 3.1 |
| 5.1.2 | External source of heating or cooling | Applies | Applies | Applies |
| 5.2 | Service temperature | Modified | Modified | Applies |
| 5.3.1 | Determination of maximum surface temperature | Replaced by 4.5 in conjunction with 5.1.13 | Replaced by 4.5 in conjunction with 5.1.13 only when tested in accordance with 5.1.13.3. | Applies |
| 5.3.2.1 | Group I electrical equipment | Applies | Excluded | Applies |
| 5.3.2.2 | Group II electrical equipment | Applies | Excluded | Applies |
| 5.3.2.3.1 | Group III electrical equipment, Maximum surface temperature determined without a dust layer | Excluded | Applies, where the maximum sheath temperatures determined by IEC/IEEE 60079-30-1 are used in place of the method for temperature determination from IEC 60079-0 . | Applies |
| 5.3.2.3.2 | Group III electrical equipment Maximum surface temperature with respect to dust layers | Excluded | Applies, where the maximum sheath temperature is determined only for those surfaces that are specified to be exposed to layers of combustible dust. Does not apply for trace heaters specified to be covered by thermal insulation. | Applies |
| 5.3.3 | Small component temperature for Group I and Group II electrical equipment | Excluded | Excluded | Applies |
| 6.1 | Requirements for all electrical equipment — General | Applies | Applies | Applies |
| 6.2 | Mechanical strength | Replaced by 4.2 | Replaced by 4.2 | When in direct contact with the trace heater, may be substituted by 4.2 |
| 6.3 | Opening times | Excluded | Excluded | Applies |
| 6.4 | Circulating currents in enclosures (e.g. of large electrical machines) | Excluded | Excluded | Excluded |
| 6.5 | Gasket retention | Excluded | Excluded | Applies |
| 6.6 | Electromagnetic and ultrasonic radiating equipment | Excluded | Excluded | Applies |
| 7.1.1 | Non-metallic enclosures and non-metallic parts of enclosures — Applicability | Replaced by the last paragraph of 4.1 | Replaced by the last paragraph of 4.1 | Applies |
| 7.1.2.1 | Specification of materials, General | Replaced by the last paragraph of 4.1 | Replaced by the last paragraph of 4.1 | Applies |
| 7.1.2.2 | Specification of materials, plastic materials | Replaced by the last paragraph of 4.1 | Replaced by the last paragraph of 4.1 | Applies |
| 7.1.2.3 | Elastomers | Replaced by the last paragraph of 4.1 | Replaced by the last paragraph of 4.1 | Applies |
| 7.2 | Thermal endurance | Replaced by requirements and tests | Replaced by requirements and | Applies |
| of this standard | tests of this standard | |||
| 7.3 | Resistance to light | Replaced by 5.1.16 for trace heaters and integral components specified for outdoor exposure | Replaced by 5.1.16 for trace heaters and integral components specified for outdoor exposure | Applies |
| 7.4.1 | Electrostatic charges on external non-metallic materials, Applicability | Excluded | Excluded | Applies |
| 7.4.2 | Avoidance of a build-up of electrostatic charge on Group I or Group II electrical equipment | Excluded | Excluded | Applies |
| 7.4.3 | Avoidance of a build-up of electrostatic charge on equipment for Group III | Excluded | Excluded | Applies |
| 7.5 | Accessible metal parts | Excluded | Excluded | Applies |
| 8.1 | Material composition | Excluded | Excluded | Applies |
| 8.2 | Group I | Excluded | Excluded | Applies |
| 8.3 | Group II | Excluded | Excluded | Applies |
| 8.4 | Group III | Excluded | Excluded | Applies |
| 9 | Fasteners | Excluded | Excluded | Applies |
| 10 | Interlocking devices | Excluded | Excluded | Applies |
| 11 | Bushings | Excluded | Excluded | Applies |
| 12 | Materials used for cementing | Replaced by the last paragraph of 4.1 | Replaced by the last paragraph of 4.1 | Applies |
| 13 | Ex Components | Applies | Applies | Applies |
| 14 | Connection facilities and termination compartments | Covered by the requirements of this standard | Covered by the requirements of this standard | Applies |
| 15 | Connection facilities for earthing and bonding conductors | Replaced by 5.1.15 | Replaced by 5.1.15 | Applies |
| 15 | Entries into enclosures | Excluded | Excluded | Applies |
| 17 | Supplementary requirements for rotating electrical machines | Excluded | Excluded | Excluded |
| 18 | Supplementary requirements for switchgear | Excluded | Excluded | Excluded |
| 19 | Supplementary requirements for fuses | Excluded | Excluded | Applies |
| 20 | Supplementary requirements for plugs and sockets | Excluded | Excluded | Applies |
| 21 | Supplementary requirements for luminaires | Excluded | Excluded | Excluded |
| 22 | Supplementary requirements for caplights and handlights | Excluded | Excluded | Excluded |
| 23 | Equipment incorporating cells and batteries | Excluded | Excluded | Applies |
| 24 | Documentation | Applies | Applies | Applies |
| 25 | Compliance of prototype or | Applies | Applies | Applies |
| sample with documents | ||||
| 26.1 | General | Applies | Applies | Applies |
| 26.2 | Test configuration | Applies | Applies. | Applies |
| 26.3 | Tests in explosive test mixtures | Excluded | Excluded | Applies |
| 26.4 | Tests of enclosures | Excluded | Excluded | Applies |
| 26.4.1 | Order of tests | Excluded | Excluded | Applies |
| 26.4.1.1 | Metallic enclosures, metallic parts of enclosures and glass parts of enclosures | Excluded | Excluded | Applies |
| 26.4.1.2 | Non-metallic enclosures or non-metallic parts of enclosures | Excluded | Excluded | Applies |
| 26.4.2 | Resistance to impact | Replaced by 5.1.5 | Replaced by 5.1.5 | Applies |
| 26.4.3 | Drop test | Excluded | Excluded | Excluded |
| 26.4.4 | Acceptance criteria | Replaced by 5.1.5 | Replaced by 5.1.5 | Applies |
| 26.4.5 | Degree of protection by enclosure | Replaced by 5.1.8 and/or 5.1.9 | Replaced by 5.1.8 and/or 5.1.9. | Applies |
| 26.5 | Thermal tests | Modified. | Modified | Applies |
| 26.5.1 | Temperature measurement | Replaced by 5.1.13 | Replaced by 5.1.13 | Applies |
| 26.5.2 | Thermal shock test | Excluded | Excluded | Applies |
| 26.5.3 | Small component ignition test | Excluded | Excluded | Applies |
| 26.6 | Torque test for bushings | Excluded | Excluded | Applies |
| 26.7 | Non-metallic enclosures or non-metallic parts of enclosures | Excluded | Excluded | Applies |
| 26.8 | Thermal endurance to heat | Replaced by 5.1.11 | Replaced by 5.1.11 | Applies |
| 26.9 | Thermal endurance to cold | Replaced by 5.1.7 | Replaced by 5.1.7 | Applies |
| 26.10 | Resistance to light | Replaced by 5.1.16for trace heaters and integral components specified for outdoor exposure | Replaced by 5.1.16 for trace heaters and integral components specified for outdoor exposure | Applies |
| 26.11 | Resistance to chemical agents for Group I electrical equipment | Applies for Group I | Excluded | Applies |
| 26.12 | Earth continuity | Excluded | Excluded | Applies |
| 26.13 | Surface resistance test of parts of enclosures of non-metallic materials | Excluded | Excluded | Applies |
| 26.14 | Measurement of capacitance | Excluded | Excluded | Applies |
| 26.15 | Verification of ratings of ventilating fans | Excluded | Excluded | Excluded |
| 26.16 | Alternative qualification of elastomeric sealing O-rings | Excluded | Excluded | Applies |
| 27 | Routine tests | Applies | Applies | Applies |
| 28 | Manufacturers responsibility | Applies | Applies | Applies |
| 29 | Marking | Modified | Modified | Applies |
| 30 | Instructions | Modified | Modified | Applies |
| Annex A | Supplementary requirements for Ex cable glands | Excluded | Excluded | Applies |
| Annex B | Requirements for Ex components | Excluded | Excluded | Applies |
| Annex C | Example of rig for resistance to impact test | Replaced by 5.1.5 | Replaced by 5.1.5 | Applies |
| Annex D | Motors supplied by converters | Excluded | Excluded | Excluded |
| Annex E | Temperature rise testing of electric machines | Excluded | Excluded | Excluded |
| Annex E | Guideline flowchart for tests of non-metallic enclosures or non-metallic parts of enclosures (26.4) | Excluded | Excluded | Applies |
NOTE 1
Clause numbers in the three right-hand columns of this table refer to IEC/IEEE 60079-30-1
NOTE 2
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.
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.