This standard specifies electric safety requirements for conductive connection of electrically propelled road vehicles to external electric circuits. External electric circuits include external electric power supplies and external electric loads. This document provides requirements for Mode 2, 3, 4 and reverse power flow. NOTE 1 This edition does not provide requirements for Mode 1. This standard applies to the on-board sections of vehicle power supply circuits. It applies also to dedicated power supply control functions used for the connection of the vehicle to an external electric circuit. It does not provide comprehensive safety information for manufacturing, maintenance and repair personnel. This document provides requirements for the charging modes as defined in IEC 61851-1:2017. For mode 4, this document provides requirements regarding the connection to an isolated DC EV charging station according to IEC 61851-23. NOTE 2 The requirements when not connected to external electric circuits are specified in ISO 6469-3. NOTE 3 Safety requirements for conductive connection of electrically propelled mopeds and motorcycles to external electric power supplies are covered by ISO 18246.