ISO INTERNATIONAL STANDARD 5826 Third edition 2014-02-15 Resistance welding equipment Transformers General specifications applicable to all transformers Matériel de soudage par résistance-Transformateurs- Spécifications générales applicables a tous les transformateurs Reference number IS0 5826:2014(E) LSO IS02014 IHS under ted without license from IHS Not for Resale IS0 5826:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56:CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax +4122 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ IS0 2014 - All rights reserved No reproductic networking permited without license from IHS Not for Resale IS0 5826:2014(E) Contents Page Foreword ..V 1 Scope .1 2 Normative references 3 Terms and definitions 4 Symbols and abbreviated terms 5 Construction, additional equipment 5.1 Thermal protection. .4 5.2 Output current sensing coil .4 6 Physical environment and operating conditions .5 6.1 General .5 6.2 Ambient air temperature .5 6.3 Humidity. .5 6.4 Altitude .5 6.5 Transportation and storage 5 6.6 Provisions for handling. ..5 6.7 Cooling liquid temperature. .6 7 Tests. 7.1 Test conditions ..6 7.2 Type tests. 6 7.3 Routinetests .7 8 Protection against electric shock .7 8.1 Insulation resistance .7 8.2 Dielectric strength. .7 8.3 Calibration of output current sensing coil ..8 8.4 Protection against electric shock in normal service (direct contact) .9 8.5 Protection against electric shock in case of fault condition (indirect contact) 8.6 Class II transformer insulation requirements. .9 9 Thermal rating. ..9 9.1 General 9.2 Limits of temperature rise .10 9.3 Heating test conditions. .11 9.4 Methods of temperature measurements ..13 10 Rated output voltage .15 10.1 General. .15 10.2 a.c. no-load voltage (U2o) .15 10.3 d.c. no-load voltage (U2d) .15 11 No-load input current (l10) ..15 11.1 General. ..15 11.2 Measurement procedure .16 12 Short-circuit voltage (Uc) ..16 13 Output current under load condition ..16 14 Cooling liquid circuit ..17 15 Dynamic behaviour .17 16 Rating plate. ..17 16.1 General ..17 16.2 Description .18 17 Instruction manual ..20 iii ted withoutlicensefromIHS Not for Resale