Earth leakage Zoe with Tesla DC charger
Posted: Fri, 16 Aug 2019, 14:22
I did some tests on a Tesla DC today. It has two cables (left and right). The right EVSE always works with my Zoe. The left one only works about 20% of the time with a charging impossible or check charging post error. My theory is earth leakage is the problem. I got to test the right hand (working ) one.
I think the limit for leakage is about 200mA for each category, so one of them is getting close.
I did not have a chance to check the other one and see what the figures were. Presumably a little more marginal.
The reported ground to neutral resistance was 0.0 ohms.
Incidentally, the AC input power was 15,169watts and DC to the traction battery was 14,356watts (95%) and 42watts to the 12V battery (0.3%). All AC phases were identical current so no neutral current.
Regds,
Dave
I think the limit for leakage is about 200mA for each category, so one of them is getting close.
I did not have a chance to check the other one and see what the figures were. Presumably a little more marginal.
The reported ground to neutral resistance was 0.0 ohms.
Incidentally, the AC input power was 15,169watts and DC to the traction battery was 14,356watts (95%) and 42watts to the 12V battery (0.3%). All AC phases were identical current so no neutral current.
Regds,
Dave