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IEC - 60079-11

Explosive atmospheres – Part 11: Equipment protection by intrinsic safety "i"

active
Organization: IEC
Publication Date: 1 January 2023
Status: active
Page Count: 438
ICS Code (Electrical apparatus for explosive atmospheres): 29.260.20
scope:

This part of IEC 60079 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.

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.

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.

This document does not apply to Ex Equipment cable glands.

The requirements for intrinsically safe systems are provided in IEC 60079-25.

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.

Unless otherwise stated, the requirements in this document are applicable to both intrinsically safe apparatus and associated apparatus, and the generic term "apparatus" is used throughout the standard.

As this document applies only to electrical equipment, the term "equipment" used in the standard always means "electrical equipment".

This document applies to apparatus for use under the atmospheric conditions of IEC 60079-0 with additional requirements for use at extended atmospheric pressures in the range from 60 kPa (0,6 bar), up to 110 kPa (1,1 bar).

Document History

June 1, 2023
Explosive atmospheres – Part 11: Equipment protection by intrinsic safety "i"
A description is not available for this item.
60079-11
January 1, 2023
Explosive atmospheres – Part 11: Equipment protection by intrinsic safety "i"
This part of IEC 60079 specifies the construction and testing of intrinsically safe apparatus intended for use in explosive atmospheres, and for associated apparatus which is intended for connection...
December 1, 2019
EXPLOSIVE ATMOSPHERES – Part 11: Equipment protection by intrinsic safety "i" INTERPRETATION SHEET 6
A description is not available for this item.
August 1, 2019
EXPLOSIVE ATMOSPHERES – Part 11: Equipment protection by intrinsic safety "i" INTERPRETATION SHEET 5
A description is not available for this item.
April 1, 2019
EXPLOSIVE ATMOSPHERES – Part 11: Equipment protection by intrinsic safety "i" INTERPRETATION SHEET 4
A description is not available for this item.
July 1, 2016
Explosive atmospheres – Part 11: Equipment protection by intrinsic safety "i" INTERPRETATION SHEET 2
A description is not available for this item.
July 1, 2016
Explosive atmospheres – Part 11: Equipment protection by intrinsic safety "i" INTERPRETATION SHEET 3
A description is not available for this item.
October 1, 2014
EXPLOSIVE ATMOSPHERES – Part 11: Equipment protection by intrinsic safety "i" INTERPRETATION SHEET 1
A description is not available for this item.
January 1, 2012
Explosive atmospheres – Part 11: Equipment protection by intrinsic safety “I”
This part of IEC 60079 specifies the construction and testing of intrinsically safe apparatus intended for use in an explosive atmosphere and for associated apparatus, which is intended for...
June 1, 2011
Explosive atmospheres – Part 11: Equipment protection by intrinsic safety "i"
This part of IEC 60079 specifies the construction and testing of intrinsically safe apparatus intended for use in an explosive atmosphere and for associated apparatus, which is intended for...
December 1, 2006
Explosive atmospheres – Part 11: Equipment protection by intrinsic safety "i" CORRIGENDUM 1
This part of IEC 60079 specifies the construction and testing of intrinsically safe apparatus intended for use in an explosive gas atmosphere and for associated apparatus, which is intended for...
July 1, 2006
Explosive atmospheres – Part 11: Equipment protection by intrinsic safety "i"
This part of IEC 60079 specifies the construction and testing of intrinsically safe apparatus intended for use in an explosive gas atmosphere and for associated apparatus, which is intended for...
February 1, 1999
Electrical Apparatus for Explosive Gas Atmospheres Part 11: Intrinsic Safety "i"
This part of IEC 60079 specifies the construction and testing of intrinsically safe apparatus, intended for use in potentially explosive atmospheres and for associated apparatus, which is intended...
January 1, 1991
Electrical Apparatus for Explosive Gas Atmospheres Part 11: Intrinsic Safety "i"
A description is not available for this item.
January 1, 1984
Electrical apparatus for explosive gas atmospheres Part 11: Construction and test of intrinsically-safe and associated apparatus
A description is not available for this item.
January 1, 1976
Electrical apparatus for explosive gas atmospheres Part 11: Construction and test of intrinsically-safe and associated apparatus
A description is not available for this item.

References

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