ISA 60079-7-2002 "Electrical Apparatus for Use in Class I@ Zone 1 Hazardous (Classified) Locations Type of Protection Increased Safety ""e"" (12.16.01; Second Printing 07/15/2005)"
2008ISA 60079-7-2008 „Explosive Atmosphären – Teil 7: Geräteschutz durch erhöhte Sicherheit „e“ (12.16.01)“
2002ISA 60079-7-2002 "Electrical Apparatus for Use in Class I@ Zone 1 Hazardous (Classified) Locations Type of Protection Increased Safety ""e"" (12.16.01; Second Printing 07/15/2005)"