BS-5501-2-1977 EN-50015-1977.pdf
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1、BRITISH STANDARD BS 5501-2: 1977 EN 50015 (Reprinted, incorporating Amendment Nos. 1 and 2) Electrical apparatus for potentially explosive atmospheres Part 2: Oil immersion “o” This European Standard EN 50015 was given as from 30 December 1977 the status of a British Standard UDC 621.31 213.34 78:61
2、4.833.4/.5:001.4:620.1:62 777 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 12:23:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5501-2:1977 This British Standard, having been prepared under the direction of the General Electrotechnical Engineering Standards Committee, was published under
3、 the authority of the Executive Board on 30 December 1977 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference GEL/114 Draft for comment 75/23939 DC ISBN 0 580 09548 7 Cooperating organizations The European Committee for Electrotechnical Standardization (
4、CENELEC), under whose supervision this European Standard was prepared, comprises the National Committees of the following countries. AustriaNetherlands BelgiumNorway DenmarkPortugal FinlandSpain FranceSweden GermanySwitzerland IrelandUnited Kingdom Italy Amendments issued since publication Amd. No.D
5、ate of issueComments 3234January 1980 6438March 1990Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 12:23:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5501-2:1977 BSI 08-1999i Contents Page Cooperating organisationsInside front cover Text of EN 500153
6、 National appendix A6 National appendix BInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 12:23:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5501-2:1977 ii BSI 08-1999 A British Standard does not purport to include all the necessary provisions of a contract. Users of Brit
7、ish Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6, an inside back co
8、ver and a back cover. 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. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 12:23:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EURO
9、PEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50015 Edition 1 March 1977 UDC 621.31-213.34-78:614.833.4/.5:001.4:620.1:62-777 Key words: Electrical apparatus potentially explosive atmosphere explosive atmosphere explosion proofing specific requirement oil immersion “o” English version Electrical
10、apparatus for potentially explosive atmospheres Oil immersion “o” Matriel lectrique pour atmosphres explosibles Immersion dans lhuile “o” Elektrische Betriebsmittel fr explosionsgefhrdete Bereiche lkapselung “o” This European Standard was accepted by CENELEC on 1 March 1977. The CENELEC members are
11、bound to adhere to the CENELEC Internal Regulations which specify under which conditions this European Standard has to be given, without any alteration, the status of a national standard. Up-to-date lists and bibliographical references concerning such national standards may be obtained on applicatio
12、n to the CENELEC General Secretariat or to any CENELEC member. This European Standard is established by CENELEC in three official versions (English, French, German). A translation made by another member under its own responsibility, in its own language, and notified to CENELEC has the same status. C
13、ENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Ireland, Italy, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisa
14、tion Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels Copyright reserved to all CENELEC members Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 12:23:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50015:1977 BSI 08-19
15、99 2 IEC Publications referred to in European Standard EN 50015 European Standard referred to in European Standard EN 50015 This European Standard has been prepared by the CENELEC Technical Committee 31. Contents Page Section 1. General 1Scope3 2Definitions3 Section 2. Specific constructional requir
16、ements 3Requirements for the construction of all electrical apparatus3 4Supplementary requirements for certain electrical apparatus4 Section 3. Verifications and tests 5Type tests4 Section 4. Marking 6Additional marking4 IEC 56-4 (1972) (3rd edition) High-voltage alternating-current circuit-breakers
17、 Part 4 Type tests and routine tests IEC 157-1 (1973) (2nd edition) Low-voltage switchgear and controlgear Part 1 Circuit-breakers IEC 158-1 (1970) (2nd edition) Low-voltage controlgear Part 1 Contactors IEC 292-1 (1969) (1st edition) Low-voltage motor starters Part 1 Direct-on-line (full voltage) a
18、.c. starters with following supplements: 292-1A (1971) they supplement the definitions which are given in European Standard EN 50014 “General requirements”. 2.1 oil immersion “o” a type of protection in which the electrical apparatus or parts of the electrical apparatus are immersed in oil in such a
19、 way that an explosive atmosphere which may be above the oil or outside the enclosure cannot be ignited 2.2 oil mineral oil conforming to IEC 296 Section 2. Specific constructional requirements 3 Requirements for the construction of all electrical apparatus 3.1 The electrical apparatus shall be cons
20、tructed so that deterioration of the oil by dust or humidity coming from the exterior is effectively prevented but so that gas or vapours from the oil can readily escape. 3.2 Devices shall be provided to ensure that accidental loosening of bolts, screws and nuts of electrical and mechanical connecti
21、ons, as well as of plugs and other parts or devices for filling or draining the oil, cannot occur. 3.3 Tanks which have to be lowered for filling purposes shall have a mark on the inside indicating the prescribed oil level in the lowered position. 3.4 Devices shall be provided so that the oil level
22、can be easily checked when the electrical apparatus is in service. NOTEThe use of a dipstick is permissible provided that safety is not affected, that the dipstick cannot be taken completely away from the electrical apparatus, but that it can be cleaned, if necessary. 3.5 Devices indicating the oil
23、level shall comply with the requirements 3.5.1 to 3.5.4. 3.5.1 The highest and the lowest levels permissible in normal service shall be clearly marked, taking into account the effects of temperature. 3.5.2 The construction shall be such that, in case of leakage due to any damage to the indicating de
24、vice, the oil cannot fall beneath the level at which full safety of the electrical apparatus remains assured. 3.5.3 Transparent parts shall retain their mechanical and optical properties when in contact with the oil. 3.5.4 Inspection windows shall be replaceable and oil-tight. 3.6 The following temp
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