ISO INTERNATIONAL 8528-5 STANDARD Fifth edition 2022-06 Reciprocating internal combustion engine driven alternating current generating sets - Part 5: Generating sets Groupes electrogenes a courant alternatif entrainés par moteurs alternatifsa combustion interne Partie 5: Groupes électrogenes Reference number IS0 8528-5:2022(E) ISO IS02022 IS0 8528-5:2022(E) COPYRIGHT PROTECTED DOCUMENT @ IS0 2022 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 or Iso's memberbody in the country ofthe requester. ISO copyright office CP 40i : Ch. de Blandonnet 8 CH-1214 Vernier,Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland ii @IS02022-Allrightsreserved IS0 8528-5:2022(E) Contents Page Foreword. ..iv 1 Scope. 1 2 Normative references. .1 3 Terms, definitions and symbols 3.1 Terms and definitions 1 3.2 Symbols. 9 .10 4 Other regulations and additional requirements ..1 5 Frequency characteristics 5.1 General. 11 5.2 Safety frequency 6 Voltage characteristics. ..11 7 Sustained short-circuit current ..12 .12 8 Factors affecting generating set performance 8.1 General. .12 8.2 ..12 Power.. 8.3 Frequency and voltage .12 8.4 Load acceptance .13 9 Cyclic irregularity ..15 ..17 10 Starting characteristics. 11 Stop time characteristics ..18 12 Parallel operation .19 12.1 Generating sets coupled with each other without grid .19 12.1.1 Active power sharing. 19 12.1.2 Reactive power sharing 22 12.2 Generating sets connected to the grid 24 12.2.1 General. 24 12.2.2 Influence on operating behaviour 24 12.2.3 Design features. 24 13 .28 Rating plates 14 .30 Additional factors influencing generating set performance 14.1 Starting methods .30 14.2 Shutdown methods. 30 14.3 Fuel and lubrication oil supply .31 14.4 Combustion air .31 14.5 Exhaust system. 31 14.6 Cooling and room ventilation. 31 14.7 31 Monitoring 14.8 Noise emission 32 14.9 Coupling. 32 14.10 Vibration 32 14.10.1 General 32 14.10.2 Torsional vibration 32 14.10.3 Linear vibration 33 14.11 Foundations. 33 15 Performance class operating limit values .33 15.1 .33 General 15.2 Recommendation for gas engine operating limit values. .34 Bibliography .37 ii IS02022-Allrightsreserved