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CSA - CAN/CSA-IEC-E79-1-95

Electrical Apparatus For Explosive Gas Atmospheres Part 1: Construction and Verification Test of Flameproof Enclosures of Electrical Apparatus

inactive
Organization: CSA
Publication Date: 1 May 1995
Status: inactive
Page Count: 165
scope:

This method of test is intended for the measurement of the maximum experimental safe gaps for gas -or vapor-air mixture under normal conditions of temperature * and pressure so as to permit the selection of the appropriate group of flameproof enclosures The method does not take into account the possible effects of obstacles on the safe gaps**

* An exception is made for substances with vapour pressures which are too low to permit mixtures of the required concentrations to be prepared at normal ambient temperatures For these substances, a temperature 5 deg C above that needed to give the necessary vapour pressure is used

** The design of the test apparatus for safe gap determination, other than that used for selecting the appropriate group of enclosure for a particular gas, may require to be different to the one described in this appendix. For example, the volume of the enclosure, flange width, gas concentrations and the distance between the flanges and any external wall or obstructions may have to be varied. As the design will depend on the particular investigation which is to be undertaken, it is unpracticable to recommended specific design requirements, but for most applications the general principles and precautions indicated in the clauses of this publication will still apply.  

Document History

January 1, 2016
Explosive atmospheres - Part 1: Equipment protection by flameproof enclosures “d”
The requirements of the IEC 60079 series of Standards cover protection with respect to explosion hazard only. The CAN/CSA-C22.2 No. 60079 series of Standards (based on the adoption of corresponding...
December 1, 2011
Explosive atmospheres - Part 1: Equipment protection by flameproof enclosures “d”
This part of IEC 60079 contains specific requirements for the construction and testing of electrical equipment with the type of protection flameproof enclosure "d", intended for use in explosive gas...
Electrical apparatus for explosive gas atmospheres – Part 1: Flameproof enclosures "d"
This part of IEC 60079 contains specific requirements for the construction and testing of electrical apparatus with the type of protection flameproof enclosure "d", intended for use in explosive gas...
January 1, 2002
Electrical Apparatus for Explosive Gas Atmospheres - Part 1: Flameproof Enclosures "d"
This part of IEC 60079 contains the specific requirements for the construction and testing of electrical apparatus with the type of protection flameproof enclosure "d", intended for use in...
January 1, 2002
Electrical Apparatus for Explosive Gas Atmospheres - Part 1: Flameproof Enclosures "d"
This part of IEC 60079 contains the specific requirements for the construction and testing of electrical apparatus with the type of protection flameproof enclosure "d ", intended for use in...
May 1, 1995
Electrical Apparatus For Explosive Gas Atmospheres Part 1: Construction and Verification Test of Flameproof Enclosures of Electrical Apparatus
 This standard specifies the constructional features and test requirements for flameproof enclosures of electrical apparatus intended to be used in explosive gas atmospheres. In addition, flameproof...
CAN/CSA-IEC-E79-1-95
May 1, 1995
Electrical Apparatus For Explosive Gas Atmospheres Part 1: Construction and Verification Test of Flameproof Enclosures of Electrical Apparatus
This method of test is intended for the measurement of the maximum experimental safe gaps for gas -or vapor-air mixture under normal conditions of temperature * and pressure so as to permit the...
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