IEC 60721-3-3-2002 pdf free download

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 weatherprotected locations.
This section of IEC 60721-3 classifies groups of environmental parameters and their seventies to which products are subjected when mounted for stationary use at weather. protected locations under use conditions, including periods of erection work, down time. maintenance and repair.
Weatherprotected locations, where products may be mounted for stationary use permanently or temporarily, include land-based and offshore enclosed and sheltered locations. Use in and on vehicles is excepted.
Environmental conditions directly related to explosion hazards, fire extinction and ionizing radiation are excluded Only environmental conditions as such are considered. No special description of the effects of these conditions on the products is given.
Environmental conditions directly related to explosion hazards, fire extinction and ionizing radiation are excluded. Any other unforeseen incidents are also excluded. Tb. possibility of their occurrence should be taken into account in special cases.
Microclimate within a product is not included.
Conditions of stationary use at non-weatherprotected locations, portable and non-stationary use, use in vehicles and ships, conditions of storage and transportation, and microclimates inside products are given in other sections of IEC 6072 1-3.
A limited number of classes of environmental conditions Is given, covering a broad field of application. The user of this standard should select the lowest classification necessary for covering the conditions of the intended use.
2 NormatIve references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60721-1:1990, Classification of environmental conditions — Part 1: Environmental parameters and their seventies
IEC 60721-2-1:1982. ClassificatIon of environmental conditions — Par? 2: EnvIronmental conditions appearing in nature — Section 1: Temperature and humidity Amendment 1 (1987).IEC 60721-3-3 pdf download.