Revidiran
Specifies maximum permissible A-weighted sound power levels for rotating electrical machines complying with IEC 34-1, with methods of cooling according to IEC 34-6 and degrees of protection according to IEC 34-5.
POVUČEN
IEC 60034-9:1972 ED1
99.60
Povlačenje stupilo na snagu
19. 11. 2016.
POVUČEN
IEC 60034-9:1990 ED2