Most EVs do it right and measure or calculate the AC input current and match it to the pilot signal's advertised max allowed current draw. Some EVs, I forgot which brand but we did detect this while testing the JuiceBox compatibility with all known brands of EV, but there were that appeared to determine the input voltage, multiplied that by the allowed max current to get the allowed power draw and then apparently programmed their charger to draw that power. Likely they only had accurate voltage and current measurement on the battery DC side. The problem was as the load increased and the voltage dropped, the constant power draw caused the current to go up, so the weaker the circuit, the higher the current draw... If anyone remembers the Vectrix freeway capable scooters: this problem is what blew all Vectrix chargers when charged with a long extension cord, which is almost unavoidable, because who can park their scooter next to an outlet?
Note that some versions of the Nissan Leaf convenience charger did monitor the temperature of the wall plug contacts and lower the power draw when overheating. You can recognise that variant from a very fat grey right angle plug and the short AC cord was unusually thick, because it had 2 additional wires in there for the temperature sensor in the plug. Cor. On Tue, Nov 21, 2023, 9:56 AM redscooter via EV <ev@lists.evdl.org> wrote: > I want to know how it deals with weak circuts, like long cords, etc ? > does it drop amerage load to keep the voltge up ? what low voltage does > it cut off at? or how does it respond? > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20231121/409090ee/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
