IEC 60974-4-2016 Arc welding equipment - Part 4 Periodic inspection and testing《电弧焊设备.第4部分 定期检修和试验》.pdf
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1、 IEC 60974-4 Edition 3.0 2016-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Arc welding equipment Part 4: Periodic inspection and testing Matriel de soudage larc Partie 4: Inspection et essais priodiques IEC 60974-4:2016-07(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2016 IEC, Geneva,
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19、-nous: csciec.ch. IEC 60974-4 Edition 3.0 2016-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Arc welding equipment Part 4: Periodic inspection and testing Matriel de soudage larc Partie 4: Inspection et essais priodiques INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNAT
20、IONALE ICS 25.160 ISBN 978-2-8322-3528-7 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous
21、 avez obtenu cette publication via un distributeur agr. 2 IEC 60974-4:2016 IEC 2016 CONTENTS FOREWORD . 3 1 Scope 5 2 Normative references. 5 3 Terms and definitions 5 4 General requirements 6 4.1 Qualification of test personnel . 6 4.2 Test conditions 6 4.3 Measuring instruments 6 4.4 Periodic insp
22、ection and test . 7 4.5 Maintenance . 7 4.6 Repair . 7 4.7 Test sequence 7 5 Protection against electrical shock . 8 5.1 Visual inspection . 8 5.2 Continuity of the protective circuit 8 5.3 Insulation resistance . 9 5.4 Welding circuit touch current . 9 5.5 Touch current in normal condition 10 5.6 P
23、rotective conductor current 10 5.7 No-load voltage (U 0 ) . 11 6 Functional test . 12 6.1 Function 12 6.2 Supply-circuit on/off switching device 12 6.3 Voltage-reducing device 12 6.4 Magnetic gas valve . 13 6.5 Signal and control lamps . 13 7 Documentation 13 7.1 Test report 13 7.2 Labelling . 13 An
24、nex A (informative) Check-list for the visual inspection . 14 Annex B (informative) Example of a test report after repair . 15 Annex C (informative) Equipment not built in accordance with IEC 60974-1. 16 Figure 1 Measurement of welding circuit touch current 9 Figure 2 Measurement of touch current in
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- IEC6097442016ARCWELDINGEQUIPMENTPART4PERIODICINSPECTIONANDTESTING 电弧焊 设备 部分 定期 检修 试验 PDF

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