Abstract： IEC 60721-3-3:2002 pdf free download.Classification of environmental conditions -Part 3-3: Classification of groups of environmental parameters and their severities - Stationary use at weather protected locations. 5.1 Climatic conditions Th...

IEC 60721-3-3:2002 pdf free download.Classification of environmental conditions -Part 3-3: Classification of groups of

environmental parameters and their severities - Stationary use at weather protected locations.

5.1 Climatic conditions

The climatic conditions specified for classes 3K1 to 3K8 represent the conditions at weather- protected locations. They have been

experienced world-wide over long periods of time, taking into account all the parameters that can influence them, e.g. external

(open-air) climatic conditions, type of building construction, temperature/humidity controlling systems and internal conditions,

e.g. heat dissipation from mounted equipment, presence of humans. etc. The conditions should cover all normal cases, but not

exceptional events, e.g. failure of airconditioning systems.

Climatic conditions in tropical areas as specified in classes 3K9 and 3K10 are explained in annex E.

Recommended：