1、 IEC 60519-7Edition 2.0 2008-02INTERNATIONAL STANDARD NORME INTERNATIONALESafety in electroheat installations Part 7: Particular requirements for installations with electron guns Scurit dans les installations lectrothermiques Partie 7: Exigences particulires pour les installations comportant des can
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16、isitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 60519-7Edition 2.0 2008-02INTERNATIONAL STANDARD NORME INTERNATIONALESafety in electroheat installations Part 7: Particular requirements for installations with electron guns Scurit da
17、ns les installations lectrothermiques Partie 7: Exigences particulires pour les installations comportant des canons lectrons INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE MICS 25.180.10 PRICE CODECODE PRIXISBN 2-8318-9634-7 2 60519-7 IEC:2008 CONTENTS FOREWORD.
18、3 1 Scope.5 2 Normative references .5 3 Terms and definitions .5 4 Components of electron beam installations.7 5 Types of electron guns .7 6 Main risks.7 7 Earthing of high-voltage parts in gun chamber during maintenance 8 7.1 Manual earthing device .8 7.2 Mechanical earthing system 8 7.3 Automatic
19、earthing system 8 8 High-voltage feeding 8 8.1 High-voltage feeder cables8 8.2 Return conductor.9 8.3 Minimum distance between bare high-voltage components9 9 Protection against electric shock 9 10 Protection against overcurrent and overvoltage 10 10.1 General requirements10 10.2 High-voltage power
20、supply 10 11 Equipotential bonding.10 12 Control circuits and control functions10 12.1 Control circuits 10 12.2 Control functions .10 13 Liquid cooling .10 14 Risks caused by certain processes or components .11 14.1 Risk of fire.11 14.2 Danger of explosion 11 14.3 Environmental pollution .11 14.4 He
21、alth hazards 11 14.5 Vacuum plant 11 15 X-rays 12 16 Marking, labelling, technical documentation and instructions 12 16.1 Marking, labelling and technical documentation.12 16.2 Information on inspection and commissioning, and instructions for utilization and maintenance of installations with electro
22、n guns 12 60519-7 IEC:2008 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SAFETY IN ELECTROHEAT INSTALLATIONS Part 7: Particular requirements for installations with electron guns FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
23、 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards,
24、 Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparator
25、y work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organization
26、s. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of reco
27、mmendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by a
28、ny end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional pu
29、blication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publicatio
30、n. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or fo
31、r costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct a
32、pplication of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60519-7 has been prepared by IEC
33、 technical committee 27: Industrial electroheating equipment. This second edition cancels and replaces the first edition published in 1983 and constitutes a technical revision. The significant changes with respect to the previous edition are as follows: the latest edition of IEC 60519-1 has been tak
34、en into account (the structure of clauses was adapted to it as far as practicable); some definitions have been modified or brought into line with IEC 60050-841:2004; Clauses 4 and 5 were added; requirements for the earthing system were updated according to technical progress; the arrangement of the
35、return conductor was changed to avoid earthing connections from the process current as far as possible; 4 60519-7 IEC:2008 possible risks caused by certain processes or components were described in Clause 14. This part of IEC 60519 is to be used in conjunction with IEC 60519-1:2003. It is intended t
36、o specify particular requirements for electroheating installations with electron guns. The text of this standard is based on the following documents: FDIS Report on voting 27/578/CDV 27/622/RVC Full information on the voting for the approval of this standard can be found in the report on voting indi
37、cated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The list of all parts of the IEC 60519 series, under the general title Safety in electroheat installations, can be found on the IEC website. The committee has decided that the contents of t
38、his publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 60519-7 IEC:20
39、08 5 SAFETY IN ELECTROHEAT INSTALLATIONS Part 7: Particular requirements for installations with electron guns 1 Scope This part of IEC 60519 deals with safety of electroheat installations with electron guns. It applies to all the electroheat applications with electron guns. This standard, whilst pre
40、pared for electroheat installations with electron guns may, however, also be used for non-thermal applications with electron guns and equipment employing glow discharge systems, where applicable. This standard applies also to high-voltage sources feeding electron guns. All requirements of IEC 60519-
41、1 apply. Additional requirements for installations covered by this part of the standard are given in Clauses 6 to 16. 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 re
42、ferences, the latest edition of the referenced document (including any amendments) applies. IEC 60050-841:2004, International Electrotechnical Vocabulary Part 841: Industrial electroheat IEC 60204-1:2005, Safety of machinery Electrical equipment of machines Part 1: General requirements IEC 60364-4-4
43、3, Electrical installations of buildings Part 4-43: Protection for safety Protection against overcurrent IEC 60519-1:2003, Safety in electroheat installations Part 1: General requirements 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050-841, IEC
44、 60519-1 and the following apply. 3.1 electron beam electron flux emitted from one source (cathode or plasma) and moving along the exactly determined tracks at very great velocities IEV 841-30-01, modified 3.2 electron (beam) gun system of generating, forming and accelerating one or more electron be
45、ams 6 60519-7 IEC:2008 IEV 841-30-08, modified 3.3 anode (of an electron gun) electrode capable of educing and accelerating electrons from the medium of lower conductivity IEV 841-22-31, modified 3.4 cathode (of an electron gun) electrode capable of emitting electrons from the medium of low conducti
46、vity and also of receiving positive carriers, if necessary IEV 841-22-32, modified 3.5 beam accelerating voltage potential difference between the cathode and the anode, to generate an electric field for acceleration of electrons IEV 841-30-29 3.6 high-voltage power supply source of the acceleration
47、voltage and of the emission current for electron guns 3.7 return conductor electrical interconnection between the high-voltage power supply (positive pole) and anodic part of the electron gun system including the vacuum chamber around the workpiece 3.8 interlock device that prevents activation of a
48、piece of equipment when any form of hazard or danger exists 3.9 vacuum chamber enclosed space of a vacuum plant constructed in such a way that it can withstand a rarefied atmosphere inside, in which the workpiece to be treated is placed 3.10 electron gun chamber vacuum chamber in which the electron
49、gun is located NOTE This chamber may be separated from the workpiece by an aperture, so that between the electron gun and the workpiece, a pressure difference can be established. 3.11 electron beam deflection system electromagnetic coil or deflecting electrodes system, applied to place the beam to different working positions or move the beam over the charge heat surface IEV 841-30-25, modified 3
