ISO INTERNATIONAL STANDARD 17657-4 First edition 2005-09-15 Resistance welding Welding current measurement for resistance welding - Part 4: Calibration system Soudage par resistance-Mesurage des courants en soudage par résistance Partie 4: Systeme d'etalonnage Reference number ISO 17657-4:2005(E) @ISO2005 No reproduction or networking permited without license from IHS Not for Resale ISO 17657-4:2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. @ISO2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means. IsO's member body in the country of the requester. ISO copyright office Casepostale 56:CH-1211Geneva20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2005 - All rights reserved Copyrahtlintematinalonganizationfor Standardzaion No reproduction or networking permited without license from IHs Not for Resale ISO17657-4:2005(E) Contents Page Foreword iv Introduction 1 Scope 2 Normative references 3 Terms and definitions. 4 Constructionofcalibrationsystem 4.1 Reference welding current measuring system.. 4.2 Test set-up..... 4.3 Basicfeaturefor calibration of weldingcurrent measuring system 4.4 Basic feature for calibration of current sensor .... 4.5 Basicfeatureforcalibration of welding currentmeterwithout sensor 5 Physical environment and operating conditions .. 6 Calibration requirements.... 6.1 Referencewelding current measuringsystem.. 6.2 Referencecurrentsensor 6.3 Data acquisition device. 6.4 Test stage and power sources . 7 7.1 Test reportforcalibration ofwelding currentmeasuring systems.. 7.2 Test report for calibration of current sensors .... 7.3 Test report for calibration of welding current meters without sensors . 8 Test procedure.. 8.1 General... 8.2 Calibration of welding current measuring system ... 8.3 Calibration of current sensor .... 10 8.4 Calibration of welding current meter without sensor. 8.5 Special calibration cases........ 10 Annex A (informative) Measuring set-up .. AnnexB (informative)Itemsto be recorded orfiled as referencedocumentation for calibration........17 Annex C (informative) Examples of the test report in accordance with this part of Iso 17657.. .....19 standardizationrights reserved ili Copyright Inter lional Organizationi No reproductionor networking pemmitedwithout licanse from IHS Not for Resale ISO 17657-4:2005(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO non-governmental, in liaison with ISO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (lEC)onall matters ofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. adopted by the technical committees are circulated to the member bodies for voting. Publication as an Attention is drawn to the possibility that some of the elements of this