Electrically Propelled Road Vehicles — Connection to an External Electric Power Supply — Safety Requirements
Needs review: This page currently describes ISO 19363 as covering on-board conductive charger safety (galvanic isolation, overcurrent/reverse polarity protection, etc.), but the actual published scope of ISO 19363:2020 is “Electrically propelled road vehicles — Magnetic field wireless power transfer — Safety and interoperability requirements” (confirmed via ISO’s own standard listing, iso.org/standard/73547.html). It defines on-board vehicle equipment requirements for magnetic field wireless power transfer (WPT) — transferred power, ground clearance, interoperability between WPT device classes, and associated safety/test procedures — not conductive on-board charger safety, which is the subject of ISO 17409 (off-board charger safety) and related conductive-charging standards. The body content below needs to be rewritten to accurately reflect the wireless power transfer scope rather than conductive charging; left as-is pending that rewrite rather than guessing at WPT-specific technical content (coupler classes, foreign object detection, alignment tolerances, etc.).
ISO 19363 specifies safety requirements for the on-board connection system of electrically propelled road vehicles during conductive charging from an external power supply. It covers the vehicle-side interface — the on-board charger, inlet, and control systems — and defines requirements for safe operation across the charging event from plug-in to disconnection.
Published by: International Organization for Standardization (ISO)
Current edition: ISO 19363:2020
Related standards: ISO 17409 (off-board charger safety), IEC 61851 (EV charging systems), ISO 15118 (communication)
Scope
ISO 19363 applies to road vehicles with on-board energy storage systems rechargeable from an external AC or DC supply. It specifies requirements for the vehicle-side charging inlet, on-board power electronics, thermal management during charging, and isolation of the high-voltage system. It is applicable to BEV, PHEV, and range-extended EVs.
Key Requirements
On-Board Charger Safety
The on-board charger must prevent overcharge of the battery under all foreseeable charging scenarios, including charger malfunction. Protection against reverse polarity, overvoltage, and overcurrent must be implemented. Galvanic isolation between the AC mains and the vehicle chassis is required during AC charging.
Temperature Management and Fault Handling
The vehicle must monitor charging inlet and battery temperature during charging and must reduce or terminate charging if temperatures exceed defined limits. Safe fault handling procedures must prevent hazardous conditions following single failures in the charging circuit.
Disclaimer: This is not a definitive guide, just an indication and it is important that you always go back to the source for legislation.
References
- ISO 19363:2020, ISO