PN E04555-30-1988 Electrical and electronic products Classification of environmental conditions Part 3: Classification of groups of environmental parameters and their severities Introduction [Translation of IEC Publication 721-3-0, (1984)]
1988PN E04555-30-1988 Electrical and electronic products Classification of environmental conditions Part 3: Classification of groups of environmental parameters and their severities Introduction [Translation of IEC Publication 721-3-0, (1984)]