《BS-EN-50015-1998.pdf》由会员分享,可在线阅读,更多相关《BS-EN-50015-1998.pdf(8页珍藏版)》请在三一文库上搜索。
1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 50015:1998 The Euro
2、pean Standard EN 50015:1988 has the status of a British Standard ICS 29.260.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Electrical apparatus for potentially explosive atmospheres Oil immersion o Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:42 GMT+00:00 2
3、006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 November 1998 BSI 1998 ISBN 0 580 30597 X BS EN 50015:1998 Amendments iss
4、ued since publication Amd. No.DateText affected National foreword This British Standard is the English language version of EN 50015:1998. This standard supersedes BS EN 50015:1994 which remains current. The UK participation in its preparation was entrusted by Technical Committee GEL/31, Electrical a
5、pparatus for explosive atmospheres, to Subcommittee GEL/31/17, Pressurization and other techniques, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK inter
6、ests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications re
7、ferred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a co
8、ntract. Users of British 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, the EN title page, pages 2 to 5 and a back co
9、ver. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CENELEC European Committee for Electrotechnical Standardization Comite Europe en de Normalisation Electrotechnique Europa isches Komitee fu r Elektrotechnische Normung Central Secretariat:
10、 rue de Stassart 35, B-1050 Brussels 1998 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 50015:1998 E EUROPEAN STANDARDEN 50015 NORME EUROPE ENNE EUROPA ISCHE NORM September 1998 ICS 29.260.20Supersedes EN 50015:1994 Descriptors: E
11、lectrical apparatus, potentially explosive atmosphere, explosive atmosphere, explosion proofing, specific requirement, oil immersion o English version Electrical apparatus for potentially explosive atmospheres Oil immersion o Mate riel e lectrique pour atmosphe res explosibles Immersion dans lhuile
12、o Elektrische Betriebsmittel fu r explosionsgefa hrdete Bereiche O lkapselung o This European Standard was approved by CENELEC on 1998-08-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status ofan
13、ationalstandardwithoutanyalteration.Up-to-datelistsand bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in an
14、y 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 versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Fin
15、land, France, Germany, Greece, Iceland, Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 50015:1998 BSI 1998 Foreword This European S
16、tandard was prepared by the Technical Committee CENELEC TC 31, Electrical apparatus for explosive atmospheres General Requirements. It consists of the text of EN 50015:1994 and a draft amendment to this second edition which was submitted to the unique acceptance procedure and received a positive vot
17、e. The second edition and the amendment have been combined to form an editorial third edition which was approved by CENELEC on 1998-08-01. This European Standard was prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and supports the essentia
18、l health and safety requirements of EC Directive 94/9/EC. This European Standard is to be read in conjunction with EN 50014:1997 Electrical apparatus for potentially explosive atmospheres General requirements, and with the European Standards for the specific types of protection listed in the scope o
19、f EN 50014:1997. This European Standard should not be considered in conjunction with any editions of these standards and their amendments published before 1997. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national
20、 standard or by endorsement(dop) 1999-06-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) Contents Page Foreword2 1Scope3 2Normative references3 3Definitions and symbols3 4Constructional requirements4 5Type tests5 6Routine tests5 7Marking5 8Instruction
21、s5 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 50015:1998 BSI 1998 1 Scope 1.1 This European Standard specifies the requirements for the construction and testing of oil-immersed electrical apparatus, oil-immersed parts of elect
22、rical apparatus and Ex components in the type of protection o, intended for use in potentially explosive atmospheres of gas, vapour and mist. Potentially explosive atmospheres include the presence of combustible dusts. This European Standard covers Category 2G and Category M2 only. 1.2 This European
23、 Standard supplements EN 50014, in so far that it applies to oil-immersed electrical apparatus. 1.3 This European Standard is applicable to electrical apparatus and parts of electrical apparatus which are not ignition capable in normal operation. Conformity of the electrical apparatus shall be asses
24、sed against IEC 60079-15 except for those parts designed to conform to EN 50020. NOTEThis European Standard assumes that the electrical apparatus immersed in the protective liquid is fixed in its operating position in accordance with the installation instructions. 2 Normative references This Europea
25、n Standard incorporates by dated or undated 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 ap
26、ply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 50014, Electrical apparatus for potentially explosive atmospheres General requirements. EN 50019, Electrica
27、l apparatus for potentially explosive atmospheres Increased safety e. EN 50020, Electrical apparatus for potentially explosive atmospheres Intrinsic safety i. EN 60156, Method for the determination of the electric strength of insulating oils. (IEC 60156:1995) EN 60529:1991, Degree of protection prov
28、ided by enclosures (IP code). (IEC 60529:1989) HD 565 S1:1993, Specifications for silicone liquids for electrical purposes. (IEC 60836:1988) IEC 60079-15:1987, Electrical apparatus for explosive gas atmospheres Part 15: Electrical apparatus with type of protection n. IEC 60247:1978, Measurement of r
29、elative permittivity, dielectric dissipation factor and d.c. resistivity of insulating liquids. IEC 60296:1982, Specification for unused mineral insulating oils for transformers and switchgear. IEC 60588-2:1978, Askarels for transformers and capacitors Part 2: Test methods. ISO 2719:1988, Petroleum
30、products and lubricants Determination of Flash Point Pensky-Martens closed cup method. ISO 3016:1974, Petroleum Oils Determination of pour point. ISO 3104:1976, Petroleum Products Transparent and opaque liquids Determination of kinematic viscosity and calculation of dynamic viscosity. 3 Definitions
31、and symbols The following definitions in EN 50014:1997 apply to this standard: 3.27, 3.29, 3.31. The following definitions specific to the type of protection oil immersion o are applicable in this European Standard. They supplement the definitions which are given in EN 50014. 3.1 oil immersion o typ
32、e of protection in which the electrical apparatus or parts of the electrical apparatus are immersed in a protective liquid in such a way that an explosive atmosphere which may be above the liquid or outside the enclosure cannot be ignited 3.2 protective liquid mineral oil conforming to IEC 60296 or
33、an alternative liquid meeting the requirements of 4.1 3.3 sealed apparatus apparatus designed and constructed in such a manner as to prevent ingress of an external atmosphere during the expansion and contraction of the internally contained liquid during normal operation 3.4 non-sealed apparatus appa
34、ratus designed and constructed in such a manner as to allow the ingress and egress of an external atmosphere during the expansion and contraction of the internally contained fluid during normal operation 3.5 maximum permissible protective liquid level maximum level the protective liquid can attain i
35、n normal service, taking into account the effects of expansion from the worst case filling condition specified by the manufacturer to the condition of full load at maximum ambient temperature for which the apparatus is designed 3.6 minimum permissible protective liquid level minimum level the protec
36、tive liquid can attain in normal service taking into account the effects of contraction from the worst case filling condition to the condition of de-energization at minimum ambient temperature Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 07:19:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
37、Page 4 EN 50015:1998 BSI 1998 4 Constructional requirements 4.1 Protective liquid other than mineral oil conforming to IEC 60296 shall comply with the following specific requirements. a) The protective liquid shall have a fire point of 300 8C (minimum) as determined by the test method indicated in H
38、D 565 S1 (IEC 60836). b) The protective liquid shall have a flash point (closed) of 200 8C (minimum) determined in accordance with ISO 2719. c) The protective liquid shall have a kinematic viscosity of 100 cSt (maximum) at 25 8C determined in accordance with ISO 3104. d) The protective liquid shall
39、have an electrical breakdown strength of 27 kV (minimum) determined in accordance with EN 60156. In the case of silicone liquids HD 565 S1 (IEC 60836) shall be used. e) The protective liquid shall have a volume resistivity at 25 8C of 1014ohm.cm (minimum) determined in accordance with IEC 60247. f)
40、The pour point shall be 230 8C (maximum) determined in accordance with ISO 3016. g) The acidity (neutralization value) shall be 0,03 mg KOH/g (maximum) determined in accordance with IEC 60588-2. NOTEThe reference to IEC 60588-2 identifies a test method only; it does not allow the use of substances p
41、rohibited by legislation. h) The protective liquid shall have no adverse effect on the properties of materials with which it is in contact. The manufacturer shall provide data to confirm conformity to the above. 4.2 For Group I apparatus, mineral oils are not acceptable. 4.3 The apparatus shall be c
42、onstructed so that deterioration of the protective liquid by dust or humidity from the exterior is prevented by the following means. 4.3.1 Apparatus which is sealed shall be provided with a pressure relief device. This device shall be set and sealed by the manufacturer of the liquid filled apparatus
43、 to operate at least at 1,1 times the pressure above the liquid level at the maximum permissible protective liquid level. 4.3.2 Apparatus which is not sealed shall be constructed so that gas or vapour which may evolve from the protective liquid in normal service can readily escape. A breathing devic
44、e complete with suitable drying agent shall be provided. The manufacturer shall specify the maintenance requirements for the drying agent. The testing station is not required to verify the suitability of the drying agent nor its maintenance. 4.3.3 The apparatus shall have a degree of protection of a
45、t least IP66 as given in EN 60529 with no ingress of water. The outlet of the breathing device for non-sealed apparatus and the outlet of the pressure relief device for sealed apparatus shall have a degree of protection of at least IP23 as given in EN 60529. 4.4 Means shall be provided to guard agai
46、nst accidental loosening of external and internal fasteners, as well as of devices to indicate the liquid level, plugs and other parts for filling or draining the liquid. Examples of means to guard against accidental loosening are: cementing of threads; locking washers; wiring of bolt heads. A warni
47、ng label is not considered sufficient. 4.5 A protective liquid level indicating device(s) complying with the requirements of 4.5.1 to 4.5.3 shall be provided so that the liquid level of each separate liquid filled compartment can be easily checked in service. 4.5.1 The maximum and the minimum protec
48、tive liquid levels permissible in normal service shall be clearly marked, taking into account the effects of expansion and contraction resulting from operational temperature changes over the full ambient temperature range specified by the manufacturer. 4.5.2 The protective liquid level indicating de
49、vice shall be so marked to indicate the levels to which the electrical apparatus shall be filled under the filling temperature conditions specified by the manufacturer. Alternatively an adjacent label shall be provided which fully specifies the filling conditions. 4.5.3 The construction shall be such that, unless the manufacturer can demonstrate that in normal service leakage from the indicating device will not occur, the minimum possible filling level of the protective liqu
链接地址:https://www.31doc.com/p-3742835.html