Wouldnt this be nice if it was your first EV charging job!
If the e-Niro is charging from a single phase supply it appears to use a relay to physically connect the supply phases L1 and L2 together – presumably because the car has two 3.6kW single phase chargers that need to be connected in parallel to charge at 7kW from one phase.
When the zappi switches to three phases it follows this sequence
- Instructs the car to stop the charge
- Opens the output contactors, completely isolating the output to the EV
- Sends a reset sequence to the car (using the Control Pilot wire)
- Restarts the charge in three phase mode
- When the EV confirms that it is ready to charge the output contactors are closed again.
All other EV’s that support three phase charging (such as the Tesla Model 3 and Renault Zoe) respond as expected and charge safely.
Unfortunately, the Kia e-Niro does not respond to the above sequence and leaves the relay shorting L1 and L2 energised even though the supply has been isolated, causing a short circuit when the zappi starts the three-phase charge.
