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Explosive atmospheres - Part 7: Equipment protection by increased safety \'\'e\'\'
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Available format(s): Hardcopy
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Published date: 24-02-2017
Publisher: Underwriters Laboratories
1 Scope 2 References3 Terms and Definitions 4 Constructional requirements for all electrical apparatus 4.1 General 4.2 Electrical connections 4.3 Clearances 4.4 Creepage distances 4.5 Solid electrical insulating materials 4.6 Windings 4.7 Temperature limitations 4.8 Wiring internal to apparatus 4.9 Degrees of protection provided by enclosures5 Supplementary requirements for specific electrical apparatus 5.1 General 5.2 Rotating electrical machines 5.3 Luminaires 5.4 Cap lights and handlights 5.5 Measuring instruments and instrument transformers 5.6 Transformers other than instrument transformers 5.7 Batteries 5.8 General purpose connection and junction boxes 5.9 Resistance heaters (other than trace heaters) 5.10 Other electrical apparatus6 Type verifications and type tests 6.1 Dielectric strength 6.2 Rotating electrical machines 6.3 Luminaires designed for mains supply 6.4 Measuring instruments and instrument transformers 6.5 Transformers other than instrument transformers 6.6 Secondary batteries 6.7 General purpose connection and junction boxes 6.8 Resistance heating devices and resistance heating units 6.9 Terminal insulating material tests 6.10 Terminal dielectric tests7 Routine verifications and routine tests 7.1 Dielectric tests 7.2 Dielectric tests for batteries 7.3 Inter-turn overvoltage tests8 Ex component certificates 8.1 General 8.2 Terminals9 Marking and instructions 9.1 General marking 9.2 Instructions for use 9.3 Warning markingsAnnex A (normative) - Cage motors - Methods of test and of calculationAnnex B (normative) - Type tests for specific forms of resistance heating devices or resistance heating units (other than trace heater)Annex C (informative) - Cage motors - Thermal protection in serviceAnnex D (informative) - Resistance heating devices and units - Additional electrical protectionAnnex E (informative) - Combinations of terminals and conductors for general purpose connection and junction boxesAnnex F (informative) - Dimensions of copper conductorsAnnex G (informative) - Potential stator winding discharge risk assessment - Ignition risk factorsAnnex H (normative) - Test procedure for T8, T10 and T12 lampsAnnex I (informative) - Introduction of an alternative risk assessment method encompassing 'Equipment Protection Levels' for Ex EquipmentAnnex J (informative) - BibliographyAnnex K (informative) - United States major deviations
This revision of ANSI/UL 60079-7 dated June 3, 2021 is being issued to update the title page to reflect the reaffirmation of its ANSI approval and to update the membership list.
1.1 This part of IEC 60079 standard specifies the requirements for the design, construction, testing and marking of electrical equipment and Ex Components with type of protection increased safety “e” intended for use in explosive gas atmospheres.
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