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  • BSI
    PD CLC IEC/TS 60079-39:2019 Explosive atmospheres - Intrinsically safe systems with electronically controlled spark duration limitation
    Edition: 2020
    $497.46
    / user per year

Description of PD CLC IEC/TS 60079-39:2019 2020

This Technical Specification specifies the construction, testing, installation and maintenance of Power-i apparatus and systems which utilise electronically controlled spark duration limitation to maintain an adequate level of intrinsic safety.

This Technical Specification contains requirements for intrinsically safe apparatus and wiring intended for use in explosive atmospheres and for associated apparatus intended for connection to intrinsically safe circuits entering such atmospheres.

This Technical Specification excludes the level of protection “ia” and the use of softwarecontrolled circuits.

This Technical Specification applies to electrical equipment utilising voltages not higher than 40 V d.c. and a safety factor 1,5 for Groups IIB, IIA, I and III. It is also applicable to Group IIC “ic” apparatus with a safety factor 1,0. Group IIC “ib” apparatus with a safety factor 1,5 are restricted to voltages up to 32 V d.c.

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

This Technical Specification is applicable to intrinsically safe apparatus and systems which utilise electronically controlled spark duration limitation with the aim of providing more electrical power while maintaining an adequate level of safety.

This Technical Specification is also applicable to electrical equipment or parts of electrical equipment located outside hazardous areas or protected by another type of protection listed in the IEC 60079 series, where the intrinsic safety of the electrical circuits in explosive atmospheres depends on the design and construction of such electrical equipment or parts of such electrical equipment. The electrical circuits located in the hazardous area are evaluated for use in such locations by applying this Technical Specification.

This Technical Specification supplements and modifies the requirements of IEC 60079-0, IEC 60079-11, IEC 60079-14, IEC 60079-17 and IEC 60079-25.



Standard NumberPD CLC IEC/TS 60079-39:2019
TitleExplosive atmospheres - Intrinsically safe systems with electronically controlled spark duration limitation
StatusDefinitive
Publication Date2020-11-06
Identical National Standard OfCLC/TS IEC 60079-39:2019, IEC TS 60079-39:2015/COR1:2020, CLC/IEC/TS 60079-39:2019/Cor1
CorrectsPD CLC IEC/TS 60079-39:2019
DescriptorsElectric power systems, Safety, Type i protected electrical equipment, Fire risks, Testing, Marking, Explosive atmospheres, Electrical equipment, Duration
ICS29.260.20 Electrical apparatus for explosive atmospheres
CommitteeEXL/31/2
ISBN978 0 539 15871 7
PublisherBSI
Pages58

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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