BS EN 60683-2012 Industrial electroheating equipment Test methods for submerged-arc furnaces《工业电热设备 埋弧炉的试验方法》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationIndustrial electroheating equipment Test methods for submerged-arc furnacesBS EN 60683:2012National forewordThis British Standard is the UK implementation of EN 60683:2012. It is

2、 identical to IEC 60683:2011. It supersedes BS 7686:1993, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PEL/27, Electroheating.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not

3、 purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012ISBN 978 0 580 72081 9 ICS 25.180.10Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was publ

4、ished under the authority of the Standards Policy and Strategy Committee on 29 February 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60683:2012EUROPEAN STANDARD EN 60683 NORME EUROPENNE EUROPISCHE NORM January 2012 CENELEC European Committee for Electrotec

5、hnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60

6、683:2012 E ICS 25.180.10 Supersedes HD 599 S1:1992English version Industrial electroheating equipment - Test methods for submerged-arc furnaces (IEC 60683:2011) Chauffage lectrique industriel - Mthodes dessai des fours arc submerg (CEI 60683:2011) Industrielle Elektrowrmeanlagen - Prfverfahren fr Li

7、chtbogen-Reduktionsfen (IEC 60683:2011) This European Standard was approved by CENELEC on 2011-11-23. CENELEC 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 alteratio

8、n. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made

9、 by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Re

10、public, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 60683:2012EN 60683:2012 Forewor

11、d The text of document 27/780/CDV, future edition 2 of IEC 60683, prepared by IEC/TC 27 “Industrial electroheating“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60683:2012. The following dates are fixed: latest date by which the document has to be implemented at natio

12、nal level by publication of an identical national standard or by endorsement (dop) 2012-08-23 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2014-11-23 This document supersedes HD 599 S1:1992. EN 60683:2011 includes the following significant tech

13、nical changes with respect to HD 599 S1:1992: Clause 1 (Scope and object) the types of furnaces covered by this standard are more clearly defined. Clause 2 (Normative references) and Clause 3 (Terms and definitions) have been updated and completed. A new Clause 4 (Features of the SAF system) has bee

14、n added; it mainly concentrates on the tests necessary for high voltage/high current electrical equipment in the installation. Clause 5 (Tests and general conditions) and Clause 6 (Technical tests) have been modified according to todays requirements for safe operation of a SAF. Attention is drawn to

15、 the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60683:2011 was approved by CENELEC as a Europ

16、ean Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC 60146-1-1:2009 NOTE Harmonized as EN 60146-1-1:2010 (not modified). BS EN 60683:2012EN 60683:2012 Annex ZA (normative) Normative references to internat

17、ional publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amen

18、dments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60398 - Industrial electroheating installations - General test methods EN 60398 - IEC 60519-1 2010 Safety in electr

19、oheating installations - Part 1: General requirements EN 60519-1 2011 IEC 60519-4 - Safety in electroheat installations - Part 4: Particular requirements for arc furnace installations EN 60519-4 - BS EN 60683:201260683 IEC:2011 CONTENTS 1 Scope and object . 5 2 Normative references . 5 3 Terms and d

20、efinitions . 5 4 Features of the SAF system 8 4.1 Electrical assembly of SAF . . 8 4.2 Star-delta switch . 9 4.3 Types of SAF . 9 4.4 SAF process principles . 9 4.5 Types of electrodes . 9 4.6 Electrode system . 10 4.7 Water cooling . . 10 4.8 Electrical connection 10 5 Tests and general conditions

21、. 10 5.1 General . . 10 5.2 List of tests during cold state . . 11 5.3 List of tests during hot commissioning and hot state . 11 6 Technical tests . . 11 6.1 Electrical insulation resistance . 11 6.1.1 General . 11 6.1.2 Electrical insulation during erection 11 6.1.3 Electrical insulation during col

22、d test 11 6.1.4 Electrical insulation during hot state . 12 6.2 Cooling water system . 12 6.3 Characteristics of electrode regulation. 12 6.3.1 Speed of electrode motion . 12 6.3.2 Electrode regulator dead band . 12 6.3.3 Electrode motion response time . . 12 6.3.4 Current control of semiconductor c

23、onverter (if applicable) . 13 6.4 Determination of electrical characteristics during operation . 13 6.5 Determination of secondary voltage . 13 6.6 Operational parameters . 13 Bibliography . 14 BS EN 60683:201260683 IEC:2011 5 INDUSTRIAL ELECTROHEATING EQUIPMENT TEST METHODS FOR SUBMERGED-ARC FURNAC

24、ES 1 Scope and object This International Standard specifies test procedures, conditions and methods according to which the main parameters and the main operational characteristics of a submerged-arc furnace (SAF) with rated electrical power levels above 500 kVA are established. This standard is appl

25、icable to SAF with one or more electrodes. In order to determine further technical or economic assessments, additional tests may be necessary. Tests for some special equipment for semiconductor converter controlled furnaces, such as controlled rectifiers or controlled a.c. converters, are covered by

26、 IEC 60146-1-1. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60398,

27、 Industrial electroheating installations General test methods IEC 60519-1:2010, Safety in electroheating installations Part 1: General requirements IEC 60519-4, Safety in electroheat installations Part 4: Particular requirements for arc furnace installations 3 Terms and definitions For the purposes

28、of this document the terms and definitions given in IEC 600519-1:2010 and the following apply. NOTE Refer to International Electrotechnical Vocabulary, IEC 60050, for general definitions. Terms relating to industrial electroheat are defined in IEC 60050-841. 3.1active power P mean value of the insta

29、ntaneous power p (in kW) taken under periodic conditions over one period of time T (in h): dtpPTT =01NOTE Active power instantaneous value (r.m.s.) measured at any time, including all phases. IEC 60050-131:2002, 131-11-42, modified BS EN 60683:2012 6 60683 IEC:2011 3.2apparent power S power rating o

30、f the transformer, energizing the SAF (in MVA) 22QPUIS +=(for single-phase SAF) UIS 3=(for three-phase SAF) where U is the voltage, r.m.s., sinusoidal value (in kV) I is the current, r.m.s. sinusoidal value (in kA) IEC 60050-131:2002, 131-11-41, modified 3.3bottom electrode SAFdc electrical conducti

31、ve elements integrated in the SAF bottom (mainly connected as anode) 3.4cold state thermal state of a furnace and its installation, when the temperature of all parts is equal to ambient temperature 3.5cold test test of the entire furnace installation, including functions, connections, movements and

32、instrumentation, prior hot commissioning, following erection 3.6dead band finite range of electrical values within which a variation of the input variable does not produce any measurable change in the output variable IEC 60050-351:2006, 351-24-14, modified 3.7electrode part produced from conductive

33、material to transfer the electric current to the process NOTE For types of electrodes, see 4.5. IEC 60050-841:2004, 841-26-38, modified 3.8furnace transformer transformer feeding the SAF with electrical energy, supplied from the high-voltage network with suitable voltage and current ranges for opera

34、tion NOTE 1 Secondary voltage is controlled by on-load tap changer or adjusted during off-circuit. NOTE 2 There are designs using three or more single phase transformers per furnace. IEC 60050-841:2004, 841-26-55, modified BS EN 60683:201260683 IEC:2011 7 3.9furnace electrical losses Plosslosses cau

35、sed by the parts of the main electrical circuit, outside the furnace vessel NOTE Electrical losses of high voltage supply, power factor compensation (when used) or prebaking electrodes are not included in the furnace electrical losses. 3.10furnace vessel which consists of bottom, shell and roof, int

36、o which the process material is charged NOTE SAF, constructed from steel, clad with refractory, can be circular / rectangular in open, semi-closed or closed form. IEC 60050-841:2004, 841-26-16, modified 3.11high-current line assembly to conduct high current between transformer secondary bus bars and

37、 electrode(s), connected in series- (and/or parallel), comprising flexible connections, bus bar system or high current tubes, cables, electrode arms (when used) and contact clamps 3.12hot commissioning heating up of the furnace till a defined production is reached 3.13hot state thermal condition of

38、the furnace as soon as hot commissioning is finished 3.14main electrical circuit electrical equipment for SAF comprising high voltage supply, power factor compensation (when used), switchgear, transformer(s), semiconductor convertors (a.c. or d.c.) (when used), d.c. reactor (when used), high current

39、 line, electrode systems with electrodes and burden 3.15power factor cos ratio of the active power to the apparent power, measured on the primary side of the transformer SP=cos where P is the active power (in MW) S is the apparent power (in MVA) NOTE In case of harmonics, power factor is determined

40、according to IEC 60146-1-1. IEC 60050-131:2002, 131-11-46, modified 3.16reactive power Q total reactive electrical power (in MVAr) generated by the main electrical circuit of a SAF, measured on all phases at the primary side of the transformer BS EN 60683:2012 8 60683 IEC:2011 NOTE 1 Instantaneous v

41、alue of the reactive power measured at any time, including all phases. NOTE 2 Mean value within a time interval: i.e. generated reactive energy (in MVArh) by the power-on time (in h). IEC 60050-131:2002, 131-11-44, modified 3.17reactive power compensation action to optimize the transmission of react

42、ive power during operation IEC 60050-603:1986, 603-04-28, modified 3.18rectifier device by means of which alternating current is changed into direct current for SAFdc IEC 60050-881:1983, 881-08-11, modified 3.19semiconductor converter electronic converter for electrical power with semiconductor valv

43、e devices NOTE SAFdc: converter to control the direct current (rectifier); SAFac: converter to control alternating current to smooth the power input (graduator). IEC 60050-551:1998, 551-12-42, modified 3.20smoothing reactor reactor used to reduce alternating components of a pulsating current, to min

44、imise arc impacts and to ensure arc stability during the process IEC 60050-811:1991, 811-26-21, modified 3.21specific electric energy consumption quantity of electrical energy (in kWh) consumed by the SAF for the production of the final product (in t), charging a defined mixture of specified raw mat

45、erials or for the (s)melting of charged material (in t) 3.22submerged arc-resistance furnace SAF vessel in which a combined arc / resistance heating is used to melt the charged material IEC 60050-841:2004, 841-26-12, modified 4 Features of the SAF system Electrical assembly of SAF 4.1In the electric

46、al assembly of a SAF, the following equipment is included: high-voltage supply line, high voltage switchgear, by which the SAF can be connected/disconnected from the electrical supply under load, furnace transformer(s), secondary bus bar system, semiconductor converter (a.c. or d.c.), BS EN 60683:20

47、1260683 IEC:2011 9 equipment for reactive power compensation and/or voltage stabilization (if supplied), automatic power regulation system, boards, panels and desks, control, measuring and signalling devices. Star-delta switch 4.2Star-delta switch(es) is/are arranged on transformer(s) HV side. It co

48、nnects the transformer HV windings to wye or delta connection in order to modify the transformer(s) secondary voltage range by 3. Any star-delta switch can be operated in off-circuit condition only. NOTE When three single-phase transformers are used, the star-delta switch is installed normally insid

49、e the transformer vessel. On single-phase transformers, the star-delta switches are installed at the high voltage switchgear. Types of SAF 4.3In general the SAF is operated using the a.c. or d.c. technology. In the SAFac, the electrical energy is conducted to the process via 3 to 6 electrodes. In some SAFac applications (e.g. FeNi furnaces) semiconductor convertors are used for alternating current control. In the SAFdc, electrical energy is condu