IEC 60079-25:2020/COR2:2022
(Corrigendum)Corrigendum 2 - Explosive atmospheres - Part 25: Intrinsically safe electrical systems
Corrigendum 2 - Explosive atmospheres - Part 25: Intrinsically safe electrical systems
Corrigendum 2 - Atmosphères explosives - Partie 25: Systèmes électriques de sécurité intrinsèque
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IEC 60079-25:2020/COR2:2022 – 1 –
IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
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IEC 60079-25 IEC 60079-25
Edition 3.0 2020-06 Édition 3.0 2020-06
EXPLOSIVE ATMOSPHERES – ATMOSPHÈRES EXPLOSIVES –
Part 25: Intrinsically safe electrical systems Partie 25: Systèmes électriques de sécurité
intrinsèque
CO RRI G E NDUM 2
Corrections to the French version appear after the English text.
Les corrections à la version française sont données après le texte anglais.
C.7 Limit curves for universal source characteristic
Figure C.7 – Limit curve diagram for universal source characteristic – Group IIC
e) Diagram for 5 mH
Replace existing Figure C.7 e) with the following new figure:
IEC 60079-25:2020-06/COR2:2022-11(en-fr)
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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.
This document is also applicable to electrical equipment or parts of electrical equipment located outside the explosive atmosphere or protected by another Type of Protection listed in IEC 60079 0, where the intrinsic safety of the electrical circuits in the explosive atmosphere may depend upon the design and construction of such electrical equipment or parts of such electrical equipment. The electrical circuits exposed to the explosive atmosphere are assessed for use in such atmospheres by applying this document.
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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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IEC 60079-47:2021(E), which is a technical specification, specifies requirements for the construction, marking and documenting of apparatus, systems and installations for use with the 2-Wire Intrinsically Safe Ethernet concept (2-WISE), such as the physical layer specification for 2-Wire Ethernet 10BASE-T1L as defined in IEEE 802.3cg.
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