ISO INTERNATIONAL STANDARD 22266-1 Second edition 2022-05 Mechanical vibration Torsional vibration of rotating machinery - Part 1: Evaluation of steam and gas turbine generator sets due to electrical excitation Vibrations mécaniques - Vibration de torsion des machines tournantes Partie 1: Evaluation des groupes électrogenes a turbine a vapeur et d gaz due a I'excitation électrique Reference number ISO 22266-1:2022(E) ISO @IS02022 IS0 22266-1:2022(E) COPYRIGHT PROTECTED DOCUMENT @ISO2022 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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, withoutpriorwrittenpermission.Permission can berequestedfrom eitherIso at theaddress below orIso'smemberbodyinthecountryoftherequester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2022 - All rights reserved