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Re: [EFM] Environmental classes


Are there classifications for "Hot Humid", "Extremely Hot", and "Extremely 
Humid"?  These conditions exist in parts of the Southern USA, and almost 
all tropical environments.  There are other "hazardous" environments as 
well that might need to be considered.

Thank you,
Roy Bynum

At 04:11 PM 1/8/2003 +0100, piers_dawe@xxxxxxxxxxx wrote:

>G.983.3 refers to ETS 300 019.  This is a very readable series of 
>documents from the European Telecommunications Standards Institute, giving 
>a classification of environmental conditions, e.g. weatherprotected 
>locations, non-weatherprotected, underground.  It uses four classes of 
>climatic conditions:
>         "applies to most of Europe"
>         extended
>         extremely cold
>         extremely warm dry
>And even better, up-to-date drafts are available on the web, e.g. at
> .
>It is not the business of 802 to pick between these classes but we can 
>refer the readers of our standard to this information.
>ITU-T and ANSI T1 do not have similar documents.
>Both G.983.3 and refer to IEC 60721, classification of environmental 
>IEC 60721-3-4 - Ed. 2.0  Classification of environmental conditions - Part 
>3: Classification of groups of environmental parameters and their 
>severities - Section 4: Stationary use at non-weatherprotected 
>locations  1995-01 is available for CHF99 at 
> .