1、BRITISH STANDARDBS EN 62076:2006Industrial electroheating installations Test methods for induction channel and induction crucible furnacesThe European Standard EN 62076:2006 has the status of a British StandardICS 25.180.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48
2、g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 62076:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 December 2006 BSI 2006ISBN 0 580 48991 4National for
3、ewordThis British Standard was published by BSI. It is the UK implementation of EN 62076:2006. It is identical with IEC 62076:2006. It supersedes BS 7690:1993 and BS EN 60646:1999, which are withdrawn.The UK participation in its preparation was entrusted to Technical Committee PEL/27, Electroheating
4、.A list of organizations represented on PEL/27 can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal o
5、bligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARD EN 62076 NORME EUROPENNE EUROPISCHE NORM November 2006 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normun
6、g Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62076:2006 E ICS 25.180.10 Supersedes HD 610 S1:1992 and EN 60646:1998English version Industrial electroheating inst
7、allations - Test methods for induction channel and induction crucible furnaces (IEC 62076:2006) Installations lectrothermiques industrielles - Mthodes dessai pour fours induction canal et pour fours induction creuset (CEI 62076:2006) Industrielle Elektrowrmeanlagen - Prfverfahren fr Induktionsrinnen
8、- und Induktionstiegelfen (IEC 62076:2006) This European Standard was approved by CENELEC on 2006-10-01. 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 altera
9、tion. Up-to-date lists and 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 any other language made by tra
10、nslation 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, Cyprus, the Czech Republic, Denmark, Estonia, Finland, F
11、rance, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword The text of document 27/523/FDIS, future edition 1 of IEC 62076, prepare
12、d by IEC TC 27, Industrial electroheating equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62076 on 2006-10-01. This European Standard supersedes HD 610 S1:1992 and EN 60646:1998. The significant changes with respect to HD 610 S1:1992 and EN 60646:1998 are
13、as follows: EN 60519-1:2003 has been taken into account; definitions have been brought into line with the second edition of IEC 60050-841; one additional test (5.8 Determination of the rated useful charge Gnu) has been introduced; informative Annex B with the list of symbols used in the standard has
14、 been added. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2007-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2009-10-
15、01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 62076:2006 was approved by CENELEC as a European Standard without any modification. _ EN 62076:2006 2 CONTENTS 1 Scope and object4 2 Normative references .4 3 Terms and definitions .4 4 Type of tes
16、ts and general conditions of tests 10 4.1 General conditions for performance of tests 10 4.2 List of tests .10 4.3 Conditions for performing the tests10 5 Methods for tests and measurements .11 5.1 Electrical withstand test of the inductor assembly11 5.2 Tightness test of cooling water circuits 12 5
17、.3 Flow test of cooling water circuits12 5.4 Measurement of temperature rise of the coolant12 5.5 Determination of the input power P and power factor of the furnace power circuit 12 5.6 Determination of holding power Ph13 5.7 Determination of specific energy consumption e, melting rate or super-heat
18、ing rate g 13 5.8 Determination of the rated useful charge Gnu14 5.9 Measurement of the temperature of the furnace casing .14 Annex A (normative) Explanatory diagrams for symbols and definitions relating to the furnace power circuit.15 Annex B (informative) List of symbols used in the document.17 Fi
19、gure A.1 Furnace power circuit .15 Figure A.2 Examples of compensated circuits 16 EN 62076:2006 3 Annex ZA (normative) Normative references to international publications with their corresponding European publications 18 INDUSTRIAL ELECTROHEATING INSTALLATIONS TEST METHODS FOR INDUCTION CHANNEL AND I
20、NDUCTION CRUCIBLE FURNACES 1 Scope and object This International Standard applies to electrical installations comprising industrial induction channel furnaces and induction crucible furnaces for melting, holding and superheating. Its object is the standardization of test methods to determine the ess
21、ential parameters and technical characteristics of electroheat installations comprising furnaces of the type indicated above. With the exception of the safety tests given in items a), b) and c) of 4.2.1, the list of tests given in this standard is neither mandatory nor restrictive. Tests may be sele
22、cted from this list as required for the characterization and evaluation of a furnace. Additional tests may be carried out, preferably in agreement between the manufacturer and the user of the furnaces concerned. 2 Normative references The following referenced documents are indispensable for the appl
23、ication 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 60050-151, International Electrotechnical Vocabulary (IEV) Part 151: Electrical and magnetic devices IEC 60050
24、-841:2004, International Electrotechnical Vocabulary (IEV) Part 841: Industrial electroheat IEC 60398:1999, Industrial electroheating installations General test methods IEC 60519-1, Safety in electroheat installations Part 1: General requirements IEC 60519-3, Safety in electroheat installations Part
25、 3: Particular requirements for induction and conduction heating and induction melting installations 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050-151, IEC 60050-841 (some of which are repeated below), IEC 60519-1 and IEC 60519-3, as well as
26、the following, apply. NOTE For definitions of terms from 3.12 to 3.24, see also the explanatory diagrams in Annex A. The symbols are also listed in Annex B. EN 62076:2006 4 3.1 electroheat installation with an induction channel furnace or induction crucible furnace installation comprising induction
27、channel furnace(s) or induction crucible furnace(s) and the electrical and mechanical equipment necessary for the operation and utilization of the furnace(s) NOTE The electrical equipment comprises the auxiliary circuits, the control system and all electrical components including conductors and swit
28、chgear in the furnace power circuit situated after the supply disconnecting device. 3.2 induction crucible furnace induction melting, holding or superheating furnace, in which the heat is generated directly in the charge, or in the crucible containing it, by means of one or more inductor coils arran
29、ged around the crucible IEV 841-27-32, modified 3.3 crucible container for the charge to be melted, made of refractory or electrical conducting materials, e.g. steel, copper or graphite IEV 841-22-50 3.4 crucible furnace inductor basic element of the induction crucible furnace, consisting of inducto
30、r coil(s) coaxially enclosing a crucible and usually of magnetic yokes or screens supported by a surrounding framework or metal casing IEV 841-27-59, modified 3.5 crucible inductor coil coil of induction melting equipment, carrying an alternating current and designed to create the magnetic field whi
31、ch induces currents in the charge or in a crucible of conductive material 3.6 induction channel furnace induction melting, holding or superheating furnace consisting of one or more refractory lined chambers into which the charge to be heated or melted is placed and to which one or more channel induc
32、tors are attached IEV 841-27-30, modified 3.7 channel inductor channel furnace inductor replaceable or fixed element of an induction channel furnace consisting of a core type inductor attached to the furnace chamber, comprising the channel inductor coils, the magnetic core, the shields, the casing a
33、nd the channel made of refractory material IEV 841-27-57, modified EN 62076:2006 5 3.8 channel inductor coil electrical winding on a closed magnetic core to be connected to an a.c. supply for generating an alternating magnetic flux in the core 3.9 core type inductor heating inductor with a closed ma
34、gnetic core passing through its channel inductor coil and the charge to be heated (transformer principle) IEV 841-27-58, modified 3.10 closed magnetic core closed laminated iron core, creating a low reluctance path for the magnetic flux 3.11 cooling and protection shield for the channel inductor air
35、 or water cooled shield, placed between the refractory lining and the channel inductor coil of the induction channel furnace NOTE The cooling and protection shield also serves as a screen for the channel inductor coil in case of any leak of liquid metal. IEV 841-27-60, modified 3.12 furnace power ci
36、rcuit circuit consisting of the power source and compensated circuit of the furnace, including the conductors connecting both 3.13 power source equipment for the supply of power to the compensated circuit of furnace and having the following main specified characteristics: frequency f2 or frequency b
37、and f21.f22 voltage U2(r.m.s. value) current I2 (r.m.s. value) active power P23.14 compensated circuit of the furnace electric circuit comprising the inductor, a compensating capacitor bank and a load-matching transformer (if applies) NOTE See Annex A. 3.15 input power of the furnace power circuit (
38、apparent power S or active power P) electric power at the supply line to the furnace power circuit EN 62076:2006 6 3.16 power factor of the furnace power circuit ratio of the active power P to the apparent power S NOTE Under sinusoidal conditions, the power factor is cos (active factor). IEV 131-11-
39、46, modified13.17 rated electrical values of the installation or a part thereof rated electrical values of the installation or a part of it are those, for which it is designed and marked on the rating plate, for example: frequency fnor frequency band fn1. fn2 voltage Un current In active power Pn3.1
40、8 input voltage of the compensated circuit Ucvoltage across the input terminals of the compensated circuit 3.19 input current of the compensated circuit Iccurrent absorbed by the compensated circuit 3.20 power of the compensated circuit Pcactive power at the input of the compensated circuit 3.21 vol
41、tage UFvoltage across the terminals of the inductor coil or system of inductor coils 3.22 furnace current IFcurrent absorbed by the inductor coil or the system of inductor coils 3.23 furnace frequency fFfrequency of the furnace current IF3.24 furnace power PFactive power at the terminals of the indu
42、ctor coil or system of inductor coils _ 1IEC 60050-131:2002, International Electrotechnical Vocabulary Part 131: Circuit theory EN 62076:2006 7 3.25 rated capacity/charge of an induction crucible furnace Gnmass of the specified molten charge which the furnace may contain with the specified crucible
43、dimensions under normal operating conditions 3.26 rated useful capacity/charge of an induction channel furnace Gnumass of the specified nominal molten charge which can be withdrawn from the furnace under operating conditions specified by the supplier 3.27 minimum capacity/charge Gminminimum mass of
44、molten metal in the furnace specified by the supplier 3.28 total capacity/charge of a furnace Gtmass of the sum of the rated useful charge and the minimum charge 3.29 test charge Gtestmass of the metal to be melted or superheated to establish specific energy consumption and melting rate or superheat
45、ing rate 3.30 charge temperature chtemperature of the charge at a given time of the heating cycle 3.31 charge starting temperature chstemperature of the charge at the beginning of the heating cycle 3.32 charge final temperature chftemperature of the charge attained at the end of the heating cycle im
46、mediately before tapping 3.33 inlet temperature of the coolant citemperature of the coolant when entering the cooling circuit of the inductor assembly 3.34 outlet temperature of the coolant cotemperature of the coolant when leaving the cooling circuit of the inductor assembly, with the furnace opera
47、ting at rated conditions EN 62076:2006 8 3.35 furnace duty at rated conditions (rated furnace duty) furnace operation with rated crucible dimensions or with new channel(s) of specified dimensions, with rated charge, rated power and rated frequency range without exceeding maximum voltage and current
48、defined by the supplier 3.36 thermal steady state of a furnace thermal state in which the whole energy input into the furnace is used for the compensation of thermal losses 3.37 hot state of a furnace thermal steady state of the furnace at charge final temperature 3.38 cold state of a furnace therma
49、l state in which the constructional component parts of the furnace are at ambient temperature 3.39 intermittent (batch) operation of a furnace operation in which a new melting cycle is started only after the tapping of the preceding charge 3.40 continuous operation of a furnace operation during which the molten charge is continually withdrawn, and a charge is continually added 3.41 holding power Phactive power supplied to the furnace power circuit, in order
