DIN IEC 75(Sec)203:1994-05

Amendment No. 1 to IEC 721-3-9; classification of environmental conditions; part 3: classification of groups of environmental parameters and their severities; section 9: microclimates inside products; introduction in table 1 of severity 75 % for class Y2 (limited relative humidity) (IEC 75(Secretariat)203:1993)