International ISO Standard ISO 5474-2 First edition Electrically propelled road 2024-06 vehicles Functional and safety requirements for power transfer between vehicle and external electric circuit - Part 2: AC power transfer Vehicules routiers a propulsion électrique - Exigences fonctionnelles et exigences de sécurité pour le transfert de puissance entre le véhicule et le circuit électrique externe - Partie 2: Transfert de puissance AC Reference number IS0 5474-2:2024(en) @ ISO 2024 IS0 5474-2:2024(en) COPYRIGHT PROTECTED DOCUMENT @ IS0 2024 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may the internet or an intranet, withoutpriorwrittenpermission.Permission canberequested from either Iso at the address below or ISo's member body in the country of the 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 @ IS0 2024 - All rights reserved ii IS0 5474-2:2024(en) Contents Page Foreword. .v 1 Scope .1 2 Normative references .1 ..2 3 Terms and definitions. .3 4 System architecture 5 Environmental and operational conditions .6 6 Safety requirements .6 6.1 General. ..6 6.2 Protection of persons against electric shock ..6 6.2.1 General 6.2.2 Compatibility with external safety devices ..7 6.2.3 Insulationresistance 6.2.4 Touch current .7 1 6.2.5 Insulation coordination. 6.2.6 Protective conductor. .7 6.2.7 Basic protection when connected to an external electric circuit. ..7 6.2.8 Requirements for unmated vehicle contacts 6.3 Protection against thermal incident .8 ..8 6.3.1 Reguirementsfornormal operation 6.3.2 Overcurrent protection ..8 6.3.3 Residual energy after disconnection related to thermal incident ..8 6.3.4 Arc protection. .9 6.4 Vehicle movement. .9 .9 6.5 AC or DC electric power at the same contacts 7 .9 Electromagnetic compatibility 8 Protection in case of unintended power transfer .9 9 Functional requirements .9 9.1 Voltage and frequency ranges for normal operation .9 9.2 Inrush current. .9 9.3 .10 Load current 9.4 Activefactor. .10 9.5 Phase order and number of phases in three-phase operation .11 9.6 .11 Requirements for the plug and cable 9.7 Requirements for the vehicle inlet. .12 9.8 Compatibility with self test functions of EV supply equipment .12 10 Additional requirements for reverse power transfer .12 General. 10.1 .12 .12 10.2 Safety requirements. 10.2.1 General .12 Reverse power transfer in grid forming mode to unearthed external circuit 10.2.2 (vehicle to load) .12 10.2.3 Reverse power transfer in grid following mode to earthed external circuit .15 (vehicletogrid) 10.2.4 ..15 (vehicle to home) .15 10.3 Functional requirements.. 10.3.1 General 15 10.3.2 Reverse power transfer in grid forming mode ..15 10.3.3 Reverse power transfer in grid following mode ..16 11 Requirements for power transfer to on-board standard socket-outlets .16 11.1 General. ..16 @ IS0 2024 - All rights reserved ili