International Standards and Conformity Assessment for all electrical, electronic and related technologies

CLC/SR 104

Environmental conditions, classification and methods of test



Reference EN 60721-2-2:2013
Title Classification of environmental conditions - Part 2-2: Environmental conditions appearing in nature - Precipitation and wind
Project Number 23468
Abstract/Scope 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.


Current Stage code 6060
Current Stage code date 2013-08-02
Current Stage code deadline 2013-10-17
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/TC 104
Reference Document IEC 60721-2-2:2012 (EQV)
ICS 19.040 - Environmental testing
Note Publication editing allocated to Supersedes HD 478.2.2:1990 * 104/565/RVC + 104/565A/RVC established on 2011-11-04: FDIS decided
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2013-08-02 2013-10-17 export to doc file  EN  FR  DE
5099 2013-01-17 2013-02-14  
5060 2012-11-12 2012-12-03 export to doc file  EN
5020 2012-09-07 2012-11-09  
3090 2012-09-04 2012-09-07  
5060 2011-09-12 2011-10-03 export to doc file  EN
5020 2011-04-08 2011-09-09  
1090 2011-04-05 2011-04-08  

Implementation Dates

date of Ratification (DOR) (1) 2013-01-17
date of Availability (DAV) (2) 2013-08-02
date of Announcement (DOA) (3) 2013-11-02
date of Publication (DOP) (4) 2014-02-02
date of Withdrawal (DOW) (5) 2016-01-17


Supersedes HD 478.2.2 S1:1990
Superseded by  
Normative reference (6) EN 60721-1

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.