
Electrical Engineering; Classification Of Environmental Conditions; Classification Of Groups Of Environmental Parameters And Their Severities; Stationary Use At Weather Protected Locations
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Classifies groups of environmental parameters and their severities to which products are subjected when mounted for stationary use at weatherprotected locations.
HD 478.3.3:1989 - Identical