BS-EN-60721-3-4-1995 IEC-60721-3-4-1995.pdf
《BS-EN-60721-3-4-1995 IEC-60721-3-4-1995.pdf》由会员分享,可在线阅读,更多相关《BS-EN-60721-3-4-1995 IEC-60721-3-4-1995.pdf(30页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 60721-3-4:1995 IEC 721-3-4: 1995 Incorporating Amendment No. 1 Classification of environmental conditions Part 3: Classification of groups of environmental parameters and their severities Section 3.4 Stationary use at non-weatherprotected locations The European Standard EN 607
2、21-3-4:1995 has the status of a British Standard ICS 19.040 BS EN 60721-3-4:1995 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 June 1995 BSI 04-2000 The follow
3、ing BSI references relate to the work on this standard: Committee reference GEL/50 Draft for comment 93/209314 DC ISBN 0 580 24184 X Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee GEL/50, to panel GEL/50/-/1, Coordinatio
4、n of IEC/TC 75 work, upon which the following bodies were represented: Federation of the Electronics Industry Society of Motor Manufacturers and Traders Limited Amendments issued since publication Amd. No.DateComments 9513June 1997Indicated by a sideline in the margin BS EN 60721-3-4:1995 BSI 04-200
5、0i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 60721-3-43 List of referencesInside back cover BS EN 60721-3-4:1995 ii BSI 04-2000 National foreword This Section of BS EN 60721 has been prepared by Technical Committee GEL/50 and is the English langu
6、age version of EN 60721-3-4:1995 Classification of environmental conditions Part 3: Classification of groups of environmental parameters and their severities Section 4: Stationary use at non-weatherprotected locations including amendment A1:1997, published by the European Committee for Electrotechni
7、cal Standardization (CENELEC). It is identical with IEC 721-3-4:1995, including Amendment 1:1996, published by the International Electrotechnical Commission (IEC). This British Standard supersedes BS EN 60721-3-4:1993 which is withdrawn. A British Standard does not purport to include all the necessa
8、ry provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references Publication referred toCorresponding British Standard EN 60721-3-0:1993 (IEC 721-3-0:1
9、984) BS EN 60721 Classification of environmental conditions Part 3. Classification of groups of environmental parameters and their severities Section 3.0:1993 Introduction BS 7527 Classification of environmental conditions HD 478.1 S2 (IEC 721-1:1990) Part 1:1991 Environmental parameters and their s
10、everities HD 478.2 S1 (IEC 721-2-1:1982) Part 2. Environmental conditions appearing in nature Section 1:1991 Temperature and humidity Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 24, an inside back cover and a back cover
11、. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60721-3-4 February 1995 + A1 January 1997 ICS 19.040 Descriptors: Environmenta
12、l conditions, stationary use at non-weather protected locations English version Classification of environmental conditions Part 3: Classification of groups of environmental parameters and their severities Section 4: Stationary use at non-weatherprotected locations (includes amendment A1:1997) (IEC 7
13、21-3-4:1995 + A1:1996) Classification des conditions denvironnement Partie 3: Classification des groupements des agents denvironnement et de leurs svrits Section 4: Utilisation poste fixe, non protg contre les intempries (inclut lamendement A1:1997) (CEI 721-3-4:1995 + A1:1996) Klassifizierung von U
14、mweltbedingungen Teil 3: Klassen von Umwelteinflugren und deren Grenzwerte Hauptabschnitt 4: Ortsfester Einsatz nicht wettergeschtzt (enthlt nderung A1:1997) (IEC 721-3-4:1995 + A1:1996) This European Standard was approved by CENELEC on 1994-10-04. CENELEC members are bound to comply with the CEN/CE
15、NELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any
16、 CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official vers
17、ions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standa
18、rdization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1995 Copyright reserved to CENELEC members Ref. No. EN 60721-3-4:1995 + A1:1997 E EN 60721-3-4:1995 BSI 04-2000 2 Foreword The text of t
19、he document 75(CO)103A, future amendment to IEC 721-3-4:1987, prepared by IEC 75, Classification of environmental conditions, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A3 to EN 60721-3-4:1993 in 1994-10-04. The text of this document, together with that o
20、f IEC 721-3-4:1987 and its amendments 1:1991 and 2:1993, was published by IEC as the second edition of IEC 721-3-4 in January 1995. According to a decision of principle taken by the Technical Board of CENELEC, the approval of EN 60721-3-4:1993/A3 has been converted into the approval of a new EN 6072
21、1-3-4. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given for information only. In this standard, Annex ZA is normative and Annex A, Annex B, Annex C and Annex D are informative. Annex ZA has been added by C
22、ENELEC. Foreword to amendment A2 The text of document 75/280/FDIS, future amendment 1 to IEC 721-3-4:1995, prepared by IEC TC 75, Classification of environmental conditions, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A1 to EN 60721-3-4:1995 on 1996-12-09.
23、 The following dates were fixed: Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 4General3 5Classification of groups of environmental parameters and their severities4 6Sets of environmental condition class combinations5 Annex A (informative) Survey of conditions affecting the ch
24、oice of environmental parameters and their severities11 Annex B (informative) Interdependence of air temperature, relative humidity and absolute humidity17 Annex C (informative) Examples for practical application of the classification specified in this standard19 Annex D (informative) Summary of con
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- BS-EN-60721-3-4-1995 IEC-60721-3-4-1995 BS EN 60721 1995 IEC
链接地址:https://www.31doc.com/p-3745055.html