EN 60034-5:1986 Rotating electrical machines: part 5: classification of degrees of protection provided by enclosures for rotating machinery (IEC 34-5:1981, modified)
2001EN 60034-5:2001 Rotating Electrical Machines Part 5: Degrees of Protection Provided by the Integral Design of Rotating Electrical Machines (IP Code) - Classification (Incorporates Amendment A1: 2007)
1986EN 60034-5:1986 Rotating electrical machines: part 5: classification of degrees of protection provided by enclosures for rotating machinery (IEC 34-5:1981, modified)