IEC 60721-2-2 Ed. 2.0 b:2012

IEC 60721-2-2:2012 presents fundamental properties, quantities for characterization, and a classification of environmental conditions dependent on precipitation and wind relevant for electrotechnical products. This second edition cancels and replaces the first edition, published in 1988, and constitutes a technical revision. The main changes with regard to the previous edition are as follows:

– subclause Precipitation: simplified;

– data not possible to validate are removed;

– subclause Wind: text rewritten;

– Table 1 simplified and aligned with definition used by [1];

– subclause Hail: data added;

– formula changed;

– formula for impact energy added;

– subclause Snow: text changed and aligned with definitions used by [1];

– Table 3 removed;

– subclause Normal rain: text has been modified and numeric values removed;

– subclause Driving rain: text has been modified and numeric values removed;

– subclause Formation of ice: text has been modified and numeric values removed;

– subclause Drifting snow: text added;

– subclause Wind force: formula changed;

– Figure 1 to 5 removed.