1、STD*BSI BS EN b0721-3-L-ENGL II977 = lb24bb9 Ob317b2 720 BRITISH STANDARD Classification of environmental conditions Part 3. Classification of groups of environmental parameters and their severities Section 1. Storage The European Stan- EN 6072151 : 1997 has the status of a , British Standard ICs 19
2、.040 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGEPT LAW BS EN 60721-3-1 : 1997 IEC 607213-1 : 1997 STD-BSI BS EN bD721-3-1-ENGL 1997 lb29bb9 Ob317b3 bb7 9 BS EN 607213-1 : 1997 This Briish Standard, having been prepared under the direction of the Elcal Sector Board, was publishe
3、d under the authority of the standards Board and comes into effect on 16 August 1997 National foreword “his British Standard is the higlish language version of EN 60721-3-1 : 1997. It is identical with IEC 60721-3-1 : 1997. It supemedes BS EN 60721-3-1 : 1993 which is withdrawn. The UK participation
4、 in its prepamtion was entrusted to Technid Committee GEIJSO, EnvirOnmental testing of electmtechnical products, which has the responsibilityto: - aid enquirem to understand the tee - present to the responsible intmnationaVEumpean committee any enquiries on the interpretation, or proposals for chang
5、e, and keep the UK interests iIlf0 - monitor reW intedonal and European developments and promulgate them in the UK. A iist of organizations represented on this committee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards nom in
6、clude an annex which lists normative references to internationai publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled internationai Stan-
7、Correspondence index, or using the Find facity of the BSI Standards Electronic Catalogue. Compliance with a British Standard does not of itself confer immunity from legai obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 23, a b
8、lank page, an inside back cover and a back cover. Amendments issued since publication 0 BSI 1997 ISBN O 880 27809 3 EUROPEAN STANDARD NORME EUROPEENNE EUROPISCHE NORM EN 60721-3-1 March 1997 English version Classification of environmental conditions Patt 3: Classification of groups of environmental
9、parameters and their severities Section 1: Storage -.(IEC 60721-3-1:1997) Classification des conditions denvironnement Teil 3: Klassen von Partie 3: Classification des groupements des agents denvironnement et de leurs sdvdrit6s Section 1: Stockage (CE1 6072 1 -3- 1 : 1 997) Klassifizierung von Umwel
10、tbedingungen Umwelteinflugren und deren Grenzwerte Hsuptabschnitt 1 : Langzeitiagerung - - (IEC 60721-3-1 : 1997) _. - _I II This European Standard was appiovd bv CENELEC on 1998-1 2-09. CENELEC mom heating, cooling or humidification being used where necessary to maintain required conditions; exposu
11、re to some solar and heat radiation; movement of surrounding air, such as through open windows; without particular risk of biological attacks; with normal levels of contaminants experienced in urban areas with industrial activities scattered over the whole area, or with heavy traffic; without specia
12、l precautions to minimize presence of dust or sand, but not situated in proximity to dust and sand sources; experiencing vibration of low significance. In addition to the conditions covered by IEll, IE12 applies to locations having neither temperature nor humidity control; heating may be used to rai
13、se low temperatures; with buildings constructed to avoid extremely high temperatures; with risk of condensation, dripping water, formation of ice. In addition to the conditions covered by IE12, IE13 applies to locations in buildings provided with minimal protection from daily variations of outside c
14、limate; exposure to solar radiation, wind-driven precipitation; with risk of mould growth and attacks by animals except termites; in close proximity to sand and dust sources, including those of urban areas. In addition to the conditions covered by IE13, IE14 applies to non-weatherprotected locations
15、; negligible heat radiation; fair movement of surrounding air; experiencing significant shock, for example that transmitted from machines or passing vehicles in the vicinity. STDOBSI BS EN bO721-3-1-ENGL 1777 = Lb24bb7 Ob31783 455 Page 20 EN 60721-3-1 : 1997 Annex C (informative) Explanation of the
16、environmental conditions in tropical areas as specified in classes 1 K10 and 1 K11 C.l General The tropics are the areas within the Northern and Southern tropics (between 2327 south and 2327 north). In tropical areas, the following types of open-air climate, as specified in IEC 721-2-1, apply: Warm
17、Dry (WDr) Mild Warm Dry (MWDr) Extremely Warm Dry (EWDr) Warm Damp (WDa) Warm Damp Equable (WDaE) The tropics are the zones of the earth in which, during daytime, high temperatures, frequently combined with high precipitation, prevail. In these areas, seasonal changes are scarcely pronounced. The tr
18、opical climate extends from warm damp climatic conditions in tropical rainforests at the equator to the warm dry climate in the deserts near the tropics. Consequently, two types of tropical climate should be distinguished: - tropical dry as a combination of the Warm Dry, Mild Warm Dry and Extremely
19、Warm Dry types of climate; and - tropical damp as a combination of the Warm Damp and Warm Damp Equable types of climate. There are also regions where the climate, owing to the particular altitude, deviates considerably from the usual conditions of those latitudes, for example solar radiation and air
20、 pressure or ice and snow on mountain summits. In many areas in the tropics, environmental conditions are identified by uniform conditions, and in other regions by very extreme climatic conditions: Balanced conditions: - minimum daily temperature fluctuations of less than 1 OC and annual temperature
21、 fluctuations of maximum 6 OC; - balanced duration of daylight periods between 10,5 h and 13,5 h; - uniform intensity of solar radiation; - balanced conditions for an abundant fauna. Extreme conditions: - precipitation: rainfall the whole year round near the equator, heavy rainfall during certain pe
22、riods of the year near the tropics; - tropical cyclones in sea areas: wind velocities of 30 m/s with peaks attaining more than 60 mis, for example in typhoons in the Western Pacific and in hurricanes in the Caribbean Sea; - unfavourable soil conditions: erosion of humus and minerals in areas with he
23、avy rainfalls; - rapid drying of soil in the desert as a result of high temperatures and strong winds; - lush vegetation in tropical rainforests, less dense vegetation in mountain forests; - grass areas of savannahs and steppes, absence of vegetation in the desert. C.2 Climatograms Climatograms for
24、the two classes describing climatic conditions in tropical areas are given in figure C.1. They are based on the mean value of annual extreme values of air temperature and humidity for the types of climate specified in C.l above. STD-BSI BS EN b0721-3-1-ENGL 1777 m 1b24bb9 Ob31785 228 Page 22 EN 6072
25、1-3-1 : 1997 Humidit8 absolue de air Absolute air humidity gm -80 -70 -60 -so -40 -30 -io -io 8 io io io io 50 60 OC Temprature de lair Air temperature IEC 620W Figure C.l - Climatogrammes correspondant au type de climat tropical humide et au type de climat tropical sec Climatograms for tropical dam
26、p type of climate and tropical dry type of climate STD-BSI BS EN b0721-3-1-ENGL 1977 W Lb24bb7 Ub3L78b Lb4 W Page 23 EN 60721-3-1 : 1997 Annex ZA (normative) Normatbe referoncas to intemadonal publicadau with thair corresponding European pubii- This European Standard incorporates by dated or undated
27、 reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when inc
28、orporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). NOTE: Wtn M int.maiond publicadon haa beon modifid by common modificrtioru, indicated by (mod), tha relevant EN/HD applies. EAuiaQQ IEC 721-1 + Al IEC 72
29、1-2-1 + Al IEC 721-3-0 * v! * + Al IEC 6072 1 -3-2 IEC 721-3-3 IEC 721-3-4 yent 1990 1992 1982 1987 1984 1987 1997 1994 1995 Classification of environmentd conditions Pafl 1 : Environmental parametws and thdr sever ides Part 2: Environmental conditions appearing in nature - Temperature and humidity
30、Part 3: Classification of groups of environmentai parameters and thdr severides - Introduction Section 2: Transportation Secdon 3: Stationary use at weatherprotected locations Section 4: Stationary use at non-weatherprotecte locations EN 60721-1 HO 478.2.1 S1 ypnr 1995 1989 EN 60721-3-0 1993 EN 6072
31、1 -3-2 1997 EN 60721 -3-3 1995 EN 60721-3-4 1995 BS EN 60721-3-1 : 1997 IEC 60721-3-1 1997 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution 3SI is the independent national body responsible for preparing British Standards. It )resents the UK view on standards in Europe and
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