ISO INTERNATIONAL STANDARD 669 Third edition 2016-02-15 Resistance welding Resistance welding equipment Mechanical and electrical requirements Soudage par résistance-Materiel de soudage par résistance- Exigencesmécaniquesetélectriques Referencenumber IS0 669:2016(E) ISO Intermational Organization for Standardization @IS02016 =ZHEJIANG INSTOFSTANDARDIZATION C15956617 itted without license from IHS IS0 669:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS02016,Published inSwitzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISOcopyrightoffice Ch. de Blandonnet 8. CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41227490947 copyright@iso.org www.iso.org PrganizationforStandardization Licensee-ZHEJIANG INST OF STANDARDIZoISQ0d6-All rights reserved networking permited without license from IHS Not for Resale, 2016/4/26 02:17:4 IS0 669:2016(E) Contents Page Foreword ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 3.1 Mechanical parts of spot, projection, and seam welding equipment .2 3.2 Mechanical parts ofupset andflash welding equipment 3.3 Static mechanical characteristics. .11 3.4 Electrical and thermal characteristics ..14 3.5 Pneumatic and hydraulic characteristics ..16 4 Symbols and abbreviated terms .16 5 Physical environment and operating conditions ..18 5.1 General. .18 5.2 Ambientairtemperature ..18 5.3 Liquid cooling medium. ..18 5.4 Humidity ..18 5.5 Altitude. .19 5.6 Transportation and storage .19 6 Test conditions .19 6.1 General. ..19 6.2 Environmental conditions ..19 6.3 Measuring instruments ..19 7 Rated no load voltage at the output. .20 7.1 General 20 7.2 a.c. no load voltage (U2o) .20 7.3 d.c. no load voltage (U2d) ..20 8 Maximum short circuit current .20 8.1 General 20 8.2 Spot and seam welding equipment .21 8.3 Projection welding equipment. .21 8.4 Upset and flash welding equipment .22 9 Thermal rating. .23 9.1 General. .23 9.2 Thermal test .23 10 Cooling liquid circuit (liquid cooled welding equipment) .23 11 Static mechanical characteristics. .24 11.1 General .24 11.2 Spot and projection welding equipment .24 11.2.1 General 24 11.2.2 Eccentricity 25 11.2.3 Angulardeflection 26 11.2.4 Radial deflection 26 11.2.5 Axial deflection.. 27 11.2.6 Machine stiffness .27 11.2.7 Parallelism of top and bottom platen ..27 11.2.8 Perpendicularity in platen movement, 4 ·28 11.3 Seam welding equipment 29 11.3.1 General. .29 11.3.2 Eccentricity .29 11.3.3 Angulardeflection .30 11.4 Upset welding equipment 30 ntemationalnzatinAll rights reserved iii jcensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 No reproduction or networking perm vithoutlicense from IHS