Information
Definition
EN 61851-21-1 covers electromagnetic compatibility requirements for EV on-board chargers when conductively connected to an AC or DC supply. On EVCP Info, it links related terminology to the relevant regulatory, standards or compliance framework used by UK-focused audiences.
Why it matters
It matters where vehicle-side charging behaviour can affect compatibility, disturbance and compliance considerations for EV charging systems. For UK users, it helps separate legal requirements, recognised standards, good practice and manufacturer claims when reviewing EV charging equipment.
References
Standards and regulations
EN 61851
EN 61851 is the UK-relevant BS EN IEC standard series for conductive EV charging systems, covering EVSE requirements, charging modes, control functions and safety principles for AC and DC charging. In UK terminology it is often referenced through BS EN IEC adoption and manufacturer compliance declarations.