Could be either. All the protection system can see is that there is some leakage to earth. That could be happening in the car, in the charger or the detection circuitry could be faulty.

I’m guessing that there isn’t another charger next to it but normal practice would be to test the car on another charger. You could test the charger with another car but not quite as practical unless someone else is waiting to charge.

 

I'd phone the chargepoint operator. If it is a fault with their unit they will want to know and mark it out of order.

 

Hmmm. Have left a message in the app, but there is no contact number either on the charger or in the app.

Reported on Zap-map too.

 

Grideserve? Whatever company it is, it is probably a fault with the charger and not your car as they can be pretty glitchy.

 

Podpoint

 

That looks like one of the current crop of ABB chargers, I haven’t found them to be very good… as in they seem to fail often. Used one the other day which failed with “internal error” but apparently had been used 20 mins previously and seemed fine 30 mins later.

 

‘Isolation’ in this instance refers to insulation. The earthing arrangement in DC chargers is unearthed IT (isolated terra), as opposed to earthed TN-S, TN-C-S or TT as is typical for most other electrical installations. Unlike earthed systems which operate a circuit breaker or fuse when a fault occurs between live conductors and earth, IT systems can operate as normal under a single earth fault condition which makes them ideal for power critical installations which need a high level of reliability. However, it’s also not good to have an earth fault sitting undetected on the system for a length of time, so IT systems need to include active insulation monitoring devices (IMD) as part of the installation which monitor the insulation resistance levels of the installation and signal a fault if the value falls below a defined threshold. All DC chargers will have an IMD installed and it looks like this has detected a fault within the charger in the picture. A fault signal from the IMD would prevent a charge session being activated for safety reasons.

Electric vehicle HV systems are also IT arrangement and should include some form of insulation monitoring for safety, so if the fault was with the vehicle it should give you a warning on the dashboard display, probably something vague such as ‘Check Electrical System’.