Leviton EV 320 car chargers fails

Unfazed

Member
Location
Lacey Springs, Virginia, USA
Occupation
Electrician, maintenance
Customer has 4 of these chargers that test proper output voltage, but they shut off as soon as connected to a vehicle. There are no card readers involved. These units are fairly new, but Leviton service to this point is not coming through with a solution. Curious if any other techs have experience with this.
 
I don't know about this system, but I have seen systems where a bad connection will allow you to get a good reading while unloaded, but the voltage drops under load. Check the line side voltage while you load the system.
 
There should be a fault code thrown. Is this fed from a three phase panel via customer transformer? Check voltage to ground, most likely the transformer was not bonded, tripping the electronic protection. Probably due to voltage imbalance to ground.
 
Customer has 4 of these chargers that test proper output voltage, but they shut off as soon as connected to a vehicle. There are no card readers involved. These units are fairly new, but Leviton service to this point is not coming through with a solution. Curious if any other techs have experience with this.
Have you demonstrated other EVSE brands work fine on your service feeder setup?
 
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