Dynamic elaboration on the Art & Science of Hazardous Area Protection
IN case of INCREASED SAFETY CONCEPT additional measures are applied to increase the level of safety, thus preventing the possibility of high temperatures and the occurrence of sparks or electric arcs within the enclosure or on exposed parts of electrical equipment
|Type of Ignition Protection||Abbreviation||Region||Classification||Specification/Standard|
|Increased Safety||AEx e||US||Class I, Zone 1||ISA 60079-7|
|Increased Safety||Ex e||CA||Class I, Zone 1||CSA E60079-7|
|Increased Safety||Ex e (EEx e)||EU||Zone 1||EN 60079-7|
|Increased Safety||Ex e||IEC||Zone 1||IEC 60079-7|
Definition: Equipment protection by increased safety “e” is applied to electrical apparatus in which additional measures are applied & employed so as to give increased security against the possibility of excessive temperatures and of the occurrence of arcs and sparks in normal service or under specified abnormal conditions
In an INCREASED SAFETY equipment (assembly) , all components have their own individual Ex Certificates . The added advantage is the use of non-metallic enclosures in this protection scheme.
The only limitation is the EXCLUSIVE use of Ex Certified components which, most of the time , are available in limited power ratings.Industrial components are not permitted to be installed directly inside an Ex e certified enclosure.