Review of Technical Design and Safety Requirements for Vehicle Chargers and Their Infrastructure According to National Swedish and Harmonized European Standards

Battery electric vehicles demand a wide variety of charging networks, such as stations and wallboxes, to be set up in the future. The high power (typically range couple kW hundred kW) possibly long duration process (up more than 24 h) put some special requirements on electrical infrastructure stations, sockets, plugs. This paper gives an overview technical design considerations for vehicle plugs, including their infrastructure, according Swedish Standard 4364000, “Low-voltage installations—Rules erection installations”, corresponding harmonized European standards. In detail, four internationally categorized modes are explained preferable two-bus communication, Directives shown. dimensioning supply lines proper selection overcurrent protection device, insulation monitor, residual current device described. Furthermore, comprehensive required safety measures, application isolation transformer or implementation overvoltage mechanism, limits conducted electromagnetic emissions, low-frequency harmonics high-frequency (150 kHz 108 MHz) given.