2016IEC 60079-15:2010/ISH1:2016 Intrepretation sheet 1 - Explosive atmospheres - Part 15: Equipment protection by type of protection "n"
2010IEC 60079-15:2010 Explosive atmospheres - Part 15: Equipment protection by type of protection "n"
2005IEC 60079-15:2005 Electrical apparatus for explosive gas atmospheres - Part 15: Construction, test and marking of type of protection "n" electrical apparatus
2001IEC 60079-15:2001 Electrical apparatus for explosive gas atmospheres - Part 15: Type of protection "n"
1987IEC 60079-15:1987 "Electrical Apparatus for Explosive Gas Atmospheres Part 15: Electrical Apparatus with Type of Protection ""N"" (Edition 1.0)"