ISA 60079-11

SAME AS UL 60079-11

This standard specifies the construction and testing ofintrinsically safe apparatus intended for use in an explosiveatmosphere and for associated apparatus, which is intended forconnection to intrinsically safe circuits which enter suchatmospheres.

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

This standard is also applicable to electrical equipment orparts of electrical equipment located outside the explosiveatmosphere or protected by another Type of Protection listed inANSI/ISA- 60079-0 where the intrinsic safety of the electricalcircuits in the explosive atmosphere may depend upon the design andconstruction of such electrical equipment or parts of suchelectrical equipment. The electrical circuits exposed to theexplosive atmosphere are evaluated for use in such an atmosphere byapplying this standard.

The requirements for intrinsically safe systems are provided inISA-60079-25

This standard supplements and modifies the general requirementsof ANSI/ISA-60079-0 except as indicated in Table 1. Where arequirement of this standard conflicts with a requirement ofANSI/ISA-60079-0 the requirements of this standardshall take precedence.

If requirements in this standard are applicable to bothintrinsically safe apparatus and associated apparatus the term”apparatus” is used throughout the standard.

This standard is for electrical equipment only; therefore theterm “equipment” used in the standard always means “electricalequipment”.

If associated apparatus is placed in the explosive atmosphere,it shall be protected by an appropriate Type of Protection listedin ANSI/ISA-60079-0 IEC 60079-0, and then the requirements of thatmethod of protection together with the relevant parts ofANSI/ISA-60079-0, also apply to the associated apparatus.

Edition:

6.2

Published:

03/28/2014

ANSI:

ANSI Approved

Number of Pages:

180

File Size:

1 file , 2.5 MB