IEC 60721-3-3/AMD2:1993 Classification of environmental conditions; part 3: classification of groups of environmental parameters and their severities; stationary use at weatherprotected locations; amendment 2 was changed to IEC 60721-3-3:1994 Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities; section 3: Stationary use at weatherprotected locations.
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