Intrinsic safety systems
Electrical equipment in potentially explosive atmospheres. Intrinsic safety

An IS system is a set of electrical equipment defined in a system description document, in which the interconnection circuits or parts of such circuits intended for use in potentially explosive atmospheres are IS circuits.

• The simplest system comprises associated IS equipment located in a non-hazardous area, connected by a cable comprising two conductors to IS equipment located in a hazardous area.

  The two devices may already be individually certified. In this case,...