1、BRITISH STANDARD BS EN 61100:1993 IEC 1100:1992 Classification of insulating liquids according to fire point and net calorific value The European Standard EN61100:1992 has the status of a BritishStandard UDC 621.315.615:536.4:614.83BSEN61100:1993 This BritishStandard, having been prepared under the
2、directionof the Cables and Insulation Standards Policy Committee, was published underthe authority of the Standards Board and comes intoeffect on 15March1993 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference CIL/10 Special announcement BSINews October1
3、992 ISBN 0 580 21983 6 Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the national committees of the following countries: Austria Italy Belgium Luxembourg Denmark Netherlands Finl
4、and Norway France Portugal Germany Spain Greece Sweden Iceland Switzerland Ireland UnitedKingdom Amendments issued since publication Amd. No. Date CommentsBSEN61100:1993 BSI 12-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN61100 3 Nationa
5、l annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-references Inside back coverBSEN61100:1993 ii BSI 12-1999 National foreword This BritishStandard has been prepared under the direction of the Cables and Insulation Standards Policy Committee and i
6、s the English language version of EN61100:1992 Classification of insulating liquids according to fire point and net calorific value, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC1100:1992 published by the International Electrotechnical C
7、ommission (IEC). A British Standard does not purport to include all the necessary 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. Summary of pages This do
8、cument comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to6, an inside back cover 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 co
9、ver.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61100 July 1992 UDC621.315.615:536.4:614.83 Descriptors: Liquid electrical insulating materials, classification, fire point, calorific value, designation English version Classification of insulating liquids according to fire point and net calo
10、rific value (IEC1100:1992) Classification des isolants liquides selon le point de feu et le pouvoir calorifique infrieur (CEI1100:1992) Klassifikation von Isolierflssigkeiten nach dem Brandverhalten und unteren Heizwert (IEC1100:1992) This European Standard was approved by CENELEC on1992-03-24. CENE
11、LEC members are bound to comply with the CEN/CENELEC 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 a
12、pplication to the Central Secretariat or to any 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 Secre
13、tariat has the same status as the official versions. 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 UnitedKingdom. CENELEC
14、European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1992 Copyright reserved to CENELEC members Ref.No.EN61100:1992EEN61100:1992 BSI 12-1999 2
15、Foreword The text of document10(CO)261, as prepared by IEC Technical Committee No10: Fluids for electrotechnical applications, was submitted to the IEC-CENELEC parallel vote in July1991. The reference document was approved by CENELEC as EN61100 on24 March1992. The following dates were fixed: Annexes
16、 designated “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Contents Page Foreword 2 Introduction 3 1 Scope 3 2 Normative references 3 3 Characteristics selected for the classification 3 3.1 Fire-point 3 3.2 Net calorific value 3 4 Classification 4 4.1 Clas
17、sification according to fire-point 4 4.2 Classification according to net calorific value 4 4.3 Examples of designation 4 Annex ZA (normative) Other international publications quoted in this standard with the references of the relevant European publications 5 latest date of publication of an identica
18、l national standard (dop)1993-05-01 latest date of withdrawal of conflicting national standards (dow)1993-05-01EN61100:1992 BSI 12-1999 3 Introduction IEC Publication76-2:1976, Power transformers Part2: Temperature rise, includes a classification system for identifying transformers based on type of
19、cooling medium and the method of coolant circulation. Insulating liquids were classified therein according to their fire behaviour into classesO (mineral oil or equivalent combustible synthetic insulating liquids), and L (non-flammable synthetic insulating liquids). In1984, IEC/TC10 undertook a clas
20、sification of insulating liquids according to fire behaviour. Pending IEC/TC10 proposals, CENELEC/TC14 drafted such a classification based on fire-point adding to the former classes O and L a new class K for liquids with fire-point above300 C. While the value of fire-point to indicate the relative e
21、ase of ignition of a liquid is widely recognized, the degree of fire hazard depends on the rate of heat release during a fire. Therefore, it seemed desirable to include an additional classification property related to the heat energy generated by the liquid during its combustion. The classification
22、system of insulating liquids described in this standard uses two fire-related characteristics: fire-point and net calorific value. When suitable, internationally standardized methods for the determination of heat release or other characteristics of fire behaviour become available, they may be incorp
23、orated in this classification. The intention is not to provide a complete evaluation of all aspects of fire hazard, neither to establish an order of merit of insulating liquid, but only to set in the same class those liquids that may require similar type and amount of safeguards for fire protection.
24、 1 Scope This International Standard defines a system for classifying insulating liquids according to fire-point and net calorific value. The characteristics on which the system is based are given together with limiting values. 2 Normative references The following standards contain provisions which,
25、 through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of
26、 applying the most recent editions of the standards listed below. Members of IEC and ISO maintain registers of currently valid International Standards: IEC 76-2:1976, Power transformers Part2:Temperature rise. ISO 2592:1973, Petroleum products Determination of flash and fire-points Cleveland open cu
27、p method. ISO 1928:1976, Solid mineral fuels Determination of gross calorific value by the calorimeter bomb method, and calculation of net calorific value. ASTM D 240:1985, Heat of combustion of liquid hydrocarbon fuels by bomb calorimeter. 3 Characteristics selected for the classification The chara
28、cterization of the fire behaviour of insulating liquids is a complex subject which requires many properties of the liquid to be considered, e.g.fire-point, flash-point, net calorific value, heat release rate, oxygen index, corrosivity and toxicity of decomposition products, opacity of smoke and fire
29、 propagation rate. Some of these properties are well defined by existing ISO methods and some are already used in existing standards, for example, net heat of combustion in various national regulations governing building construction materials. There are also characteristics which are not yet intern
30、ationally standardized in methodology terms. It is considered that classification must be based on characteristics quantifiable by a standardized procedure of known precision. On this basis the characteristics retained for this classification are fire-point and net calorific value. 3.1 Fire-point Th
31、e fire-point is determined according to ISO2592. 3.2 Net calorific value The net calorific value or net heat of combustion is determined according to ASTM D240 or equivalent national standards using the adiabatic method. The bomb calorimeter used is described in ISO1928.EN61100:1992 4 BSI 12-1999 4
32、Classification The classification of insulating liquids is defined by a letter followed by a number. 4.1 Classification according to fire-point Three classes have been defined: Class O, if the fire-point is less than or equal to300 C. Class K, if the fire-point is above300 C. Class L, if the insulat
33、ing liquid has no measurable fire-point. 4.2 Classification according to net calorific value Three classes have been defined: Class1, if the net calorific value is greater than or equal to42MJ/kg. Class2, if the net calorific value is less than42MJ/kg and greater than or equal to32MJ/kg. Class3, if
34、the net calorific value is less than32MJ/kg. NOTEThe density may be relevant. In order to obtain the net calorific value inMJ/litre, the results expressed inMJ/kg should be multiplied by the density in kilogram per litre. 4.3 Examples of designation NOTEIt is not mandatory that the complete code, in
35、 particular the numerical symbol connected with the net calorific value, be reflected in the nameplate of the equipment. O1: Fire-point=180 C, net calorific value=48MJ/kg. K1: Fire-point=310 C, net calorific value=48MJ/kg. K3: Fire-point=340 C, net calorific value=28MJ/kg. L3: No measurable fire-poi
36、nt, net calorific value=12MJ/kg.EN61100:1992 BSI 12-1999 5 Annex ZA (normative) Other international publications quoted in this standard with the references of the relevant European publications When the international publication has been modified by CENELEC common modifications, indicated by (mod),
37、 the relevant EN/HD applies. IEC Publication Date Title EN/HD Date 76-2 (mod) 1976 Power transformers Part2: Temperature rise HD398.2 S1 +A1 1980 1988 Other publications ISO2592:1973, Petroleum products Determination of flash and fire-points Cleveland open cupmethod. ISO1928:1976, Solid mineral fuel
38、s Determination of gross calorific value by the calorimeter bomb method, and calculation of net calorific value. ASTM D240:1985, Heat of combustion of liquid hydrocarbon fuels by bomb calorimeter.6 blankBSEN61100:1993 BSI 12-1999 National annex NA (informative) Committees responsible The UnitedKingd
39、om participation in the preparation of this European Standard was entrusted by the Cables and Insulation Standards Policy Committee (CIL/-) to Technical Committee CIL/10, upon which the following bodies were represented: Association of Consulting Engineers Chemical Industries Association Electricity
40、 Industry in UnitedKingdom ERA Technology Ltd. Health and Safety Executive Institute of Petroleum Transmission and Distribution Association (BEAMA Ltd.) The following bodies were also represented in the preparation of the standard, through subcommittees and panels: British (AC) Capacitor Manufacture
41、rs Association (BEAMA Ltd.) British Cable Makers Confederation British Lubricants Federation Ltd. National Association of Waste Disposal Contractors National annex NB (informative) Cross-references Publication referred to Corresponding British Standard IEC76-2:1976 BS171 Power transformers BS171-2:1
42、978 Specification for temperature rise requirements ISO2592:1973 BS4689:1980 Method for determination of flash and fire points of petroleum products: Cleveland open cup methodBS EN 61100:1993 IEC1100:1992 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent
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