ISO INTERNATIONAL 8528-5 STANDARD Fifth edition 2022-06 Reciprocating internal combustion engine driven alternating current generating sets . Part 5: Generating sets Groupes électrogenes a courant alternatifentraines par moteurs alternatifs acombustion interne Partie 5: Groupes électrogenes Reference number ISO 8528-5:2022(E) TSo @ISO 2022 ISO 8528-5:2022(E) COPYRIGHT PROTECTED DOCUMENT @ ISO 2022 All rights reserved. Unless otherwise specified, or required in the context ofits implementation, no part ofthis 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. ISO copyright office CP 401-Ch.de Blandonnet 8 CH- 1214 Yernier. Geneva Phone:+41227490111 Email: [email protected] Website :www.iso.org Published in Switzerland ii OISO 2022 _All rights reserved ISO 8528-5:2022 (E) Contents Page Foreword iv 1 Scope 2 Normative references 3 Terms, definitions and symbols 3. 1 Terms and definitions . 3. 2 Symbols 9 4 Other regulations and additional requirements 10 5 Frequency characteristics 11 5. 1 General 11 5. 2 Safety frequency 11 6 Voltage characteristics 11 7 Sustained short-circuit current 2 8 Factors affecting generating set performance 12 8. 1 General 12 8. 2 Power 2 8. 3 Frequency and voltage 12 8. 4 Load acceptance 13 9 Cyclicirregularity 15 10 Starting characteristics . 17 11 Stoptime characteristics. 18 12 Paralleloperation . 19 12.1 Generating sets coupled with each other without grid 19 19 12. 1.1 Active power sharing 12. 1. 2 Reactive power sharing 22 Generating sets connected to the grid 24 12. 2 12.2. 1 General . . 24 12. 2.2 Influence on operating behaviour 24 12. 2. 3 Design features 24 13 Rating plates 28 14 Additional factors influencing generating set performance 30 14.1 Starting methods. 30 14.2 Shutdown methods 30 14. 3 Fuel and lubrication oil 31 supply 14.4 Combustion air. 31 14.5 Exhaust system 31 14. 6 Cooling and room ventilation 31 Monitoring 31 14.7 14.8 Noise emission 32 14.9 Coupling .. 32 14.10 Vibration 32 32 14. 10. 1 General 14. 10. 2 Torsionalvibration 32 33 14. 10. 3 Linear vibration 14. 11 Foundations .. 33 15 Performance class operatinglimit values 33 15.1 General. 3 15.2 Recommendation for gas engine operating limit values 34 Bibliography 37 iii @ IS0 2022 -All rights reserved