4 ms·
You don’t really need two ground wires, CP has a diode with series resistance 2.74K to PE (ground) so it’s trivially possible for the EVSE to just send a push/p
by aetherspawn 2y ago
You don’t really need two ground wires, CP has a diode with series resistance 2.74K to PE (ground) so it’s trivially possible for the EVSE to just send a push/pull waveform over CP and if it reads push but not pull (remember diode) then it knows it’s connected properly.
The return path for the pilot current will be over the PE contact, so it can also be detect and doubly verify that PE is low resistance, although ideally you’d want a much smaller series resistance.
- darig 2y ago[dead]
- sunami-ai 2y agoMaybe you should prototype and get an investor?
- Gasp0de 2y agoIf I understood the article correctly, the high safety comes from having two ground connections and stopping already if one of them is broken. Your way would mean that if PE breaks, and at the same time contact between some high voltage component and the chassis is made, electrocution is possible.