BS-7688-1993 IEC-60779-1983.pdf
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1、BRITISH STANDARD BS 7688:1993 IEC 779:1983 Test methods for electro-slag remelting furnaces (Implementation of CENELEC HD 470 S1) UDC 621.365:621.745.3:620.1 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:42:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7
2、688:1993 This British Standard, having been prepared under the direction of the Power Electrical Engineering Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 September 1993 BSI 10-1999 The following BSI references relate to the work on
3、this standard: Committee reference PEL/87 Draft for comment 86/21628 DC ISBN 0 580 22251 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Power Electrical Engineering Standards Policy Committee (PEL/-) to Technical Committee PEL/87, upo
4、n which the following bodies were represented: Association of Manufacturers allied to the Electrical and Electronic Industry (BEAMA Ltd.) British Glass Manufacturers Confederation British Industrial Furnace Constructors Association British National Committee for Electroheat British Steel plc Electri
5、c Trace Heating Industry Council (ETHIC) Electricity Association Energy Industries Council Engineering Equipment and Materials Users Association Engineering Industries Association Health and Safety Executive Induction and Dielectric Heating Manufacturers Association Institution of Electrical Enginee
6、rs Lighting Industry Federation Ltd. Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:42:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7688:1993 BSI 10-1999i Contents Page Committees responsibleInside
7、 front cover National forewordii Text of HD 470 S13 National annex NA (informative) Cross-referenceInside back cover Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:42:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7688:1993 ii BSI 10-1999 National foreword
8、 This British Standard has been prepared under the direction of the Power Electrical Engineering Standards Policy Committee. It is identical with IEC 779:1983 Test methods for electro-slag remelting furnaces, published by the International Electrotechnical Commission (IEC). This standard also implem
9、ents Harmonization Document HD 470 S1:1986 which was published by the European Committee for Electrotechnical Standardization (CENELEC). 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
10、. 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 HD title page, pages 2 to 6, an inside back cover and a back cover. This standard has been updated (see c
11、opyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:42:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI HARMONIZATION DOCUMENT DOCUMENT
12、DHARMONISATION HARMONISIERUNGDOKUMENT HD 470 S1 February 1986 UDC 621.365:621.745.3:620.1 Descriptors: Electric furnaces; remelting furnaces; test methods; electro-slag English version Test methods for electro-slag remelting furnaces Mthodes dessai des fours de refusion sous laitier lectroconducteur
13、 Prfverfahren fr Elektro-Schlacke-Umschmelzfen This Harmonization Document was approved by CENELEC on 1986-02-27. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this Harmonization Document on a national level. Up-to-
14、date lists and bibliographical references concerning national implementation may be obtained on application to the Central Secretariat or to any CENELEC member. This Harmonization Document exists in three official versions (English, French, German). CENELEC members are the national electrotechnical
15、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 Standardization Comit Europen de Normalisation Electrotechniqu
16、e Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1986 Copyright reserved to CENELEC members Ref. No. HD 470 S1:1986 E Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:42:57 GMT+00:00 2006, Uncontrolled
17、 Copy, (c) BSI BS 7688:1993 BSI 10-1999 2 Contents Page Section 1. General 1Scope3 2Object3 3Terminology3 3.1Electro-slag remelting furnace3 3.2Electroheating installation with electro-slag remelting furnace3 3.3Power of an electroheating installation (apparent power S in kilovoltamperes or active p
18、ower P in kilowatts)3 3.4Power factor of an electroheating installation (cos )3 3.5Specific energy consumption e (kWh/kg)3 3.6Mould (crucible) of an electro-slag remelting furnace3 3.7Secondary electrical circuit of an electro-slag remelting furnace3 3.8Electro-slag remelting furnace electrode(s) (c
19、onsumable electrode)3 3.9On-load voltage of an electro-slag remelting furnace (point C in the diagram of Appendix A)3 3.10 Furnace rated current In (r.m.s. value-A) at nominal frequency fn3 3.11 Rated values of an electro-slag remelting furnace4 3.12 Rated frequency fn(Hz)4 3.13 Continuous operation
20、 of a furnace4 3.14 Steady state of an electro-slag remelting furnace4 Section 2. Technical tests 4Types of tests and general conditions of tests4 4.1List of technical tests4 Section 3. Description of technical tests 5Methods for tests and technical measurements4 5.1Measurements of open-circuit seco
21、ndary voltage of the electroheating installation4 5.2Measurement of electrical parameters of secondary circuit of the electroheating installation4 5.3Measurements of active power, reactive power and power factor of the electroheating installation5 Page 5.4Measurement of temperature of components whi
22、ch are subjected to magnetic field and/or radiated or convected heat5 5.5Measurement of temperature rise of the cooling circuit5 5.6Determination of the specific energy consumption5 Appendix A Diagram of an electro-slag remelting furnace circuit6 Licensed Copy: London South Bank University, London S
23、outh Bank University, Fri Dec 08 11:42:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7688:1993 BSI 10-19993 Section 1. General 1 Scope This standard applies to electroheating installations for the remelting and, in some cases, for the refining processes of metals through direct resistance heating
24、 of a conductive slag. 2 Object The object of this standard is to specify test methods to permit the determination of the essential parameters and technical characteristics of electroheating installations comprising the furnaces indicated above. This standard does not contain a mandatory list of tes
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