IEC TS 60079-39:2015/COR1:2020
(Corrigendum)Corrigendum 1 - Explosive atmospheres - Part 39: Intrinsically safe systems with electronically controlled spark duration limitation
Corrigendum 1 - Explosive atmospheres - Part 39: Intrinsically safe systems with electronically controlled spark duration limitation
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ļ IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
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IEC TS 60079-39
Edition 1.0 2015-06
EXPLOSIVE ATMOSPHERES ā
Part 39: Intrinsically safe systems with electronically controlled spark duration limitation
CO RRI G E NDUM 1
5.2 Power-i source
Replace the existing text of Subclause
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IEC 60079-11:2023 specifies the construction and testing of intrinsically safe apparatus intended for use in explosive atmospheres, and for associated apparatus which is intended for connection to intrinsically safe circuits which enter such atmospheres.
This Type of Protection is applicable to electrical equipment in which the electrical circuits themselves are incapable of causing ignition of a surrounding explosive atmosphere. This includes electrical equipment which contains circuits that are intrinsically safe only under certain conditions, for example under battery supply with mains supply removed.
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This document applies to sensors connected to intrinsically safe circuits but does not apply to the protection of catalytic elements for Group IIC or Group IIB + H2.
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This document supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1. Where a requirement of this document conflicts with a requirement of IEC 60079-0, the requirement of this document takes precedence.
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The requirements for construction and installation of 2-WISE devices and systems are included in IEC 60079-11, IEC 60079-14, and IEC 60079-25, except as modified by this document. Parts of a 2-WISE device can be protected by any Type of Protection listed in IEC 60079-0 appropriate to the EPL for the intended hazardous area. In these circumstances, the requirements of this technical specification apply only to intrinsically safe circuits of the apparatus.
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