VDE 0470-1 BERICHTIGUNG 1-2017 Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989 + A1:1999 + A2:2013); German version EN 60529:1991 + A1:2000 + A2:2013@ Corrigendum to DIN EN 60529 (VDE 0470-1):2014-09@ (IEC 60529 Edition 2.2 Corrigendum 2:2015); German version EN