What is BS EN 61851-23:2018?

BS EN 61851-23:2018 is an international standard that specifies the requirements and test methods for electric vehicle supply equipment (EVSE). This standard covers AC and DC charging modes for electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs). It aims to ensure compatibility, safety, and performance between the EV and the charging infrastructure.

AC Charging Mode

The AC charging mode, also known as Mode 3, is the most common charging method for EVs and PHEVs. It involves the transfer of alternating current from the charging station to the vehicle's on-board charger. BS EN 61851-23:2018 sets the standards for the communication protocol, connectors, and charging parameters used in AC charging. The standard ensures that the charging equipment and the EV can communicate effectively and safely during the charging process.

DC Charging Mode

The DC charging mode, or Mode 4, offers faster charging compared to AC charging. It involves the direct transfer of high-power direct current from the charging station to the EV's battery. BS EN 61851-23:2018 specifies the requirements for the communication protocol, connectors, and charging parameters used in DC charging. This includes the establishment of a secure, bi-directional communication link between the charging equipment and the EV to enable efficient, safe, and reliable charging.

Testing and Certification

BS EN 61851-23:2018 also outlines the testing procedures and certification requirements for EVSE. This ensures that the charging equipment meets the necessary safety, performance, and interoperability standards. The standard provides guidelines for testing various aspects, such as electrical safety, communication protocols, electromagnetic compatibility (EMC), and environmental conditions. Compliance with these requirements ensures that EV users can confidently access charging infrastructure that meets the highest standards of quality and safety.