Technically, yes. But no EV that I know of charges to 500 volts. The Jaguar I-PACE, Audi e-tron, and upcoming Rivians use 108 cells in series for 450 volts max. The Porsche Taycan and several planned EVs charge to 800 volts max, so even at empty they are above 500 volts.

It doesn't matter that EVs don't charge at 500V. That's the nomenclature that DCFC chargers use to describe their power output, since for some reason they don't use the constant value of amperage as their measure. A 100 kW DCFC is designed to deliver 200 amps at 500V. 200A * 500V = 100 kW.

That's why when cars like the Bolt says they charge at 50 kW, yet for almost all of any charging session the actual power is much less, it drives owners crazy. Common sense would dictate that a 50 kW station could charge a 50 kW EV at 50 kW. But it's impossible because a 50 kW station has that nameplate only at 500V. And as you correctly pointed out, no EV charges at 500V. A 50 kW station delivers up to 100 amps of current (again 100 amps * 500V = 50kW). A Bolt at 360V, which is about 50% SOC at 100 amps can only draw 36 kW.

The key is to watch the amps. You get the amps by dividing the nameplate wattage by 500V. So EA's 175 kW chargers can deliver 350 amps for example. The Bolt will charge at a maximum of 150 amps. That tops out right near that 50% state of charge. So the max speed is 150A * 360V = 54 kW, which is why GM states that the Bolt can charge at 50 kW. I wish all EVs and all chargers stated the amps they charge at, which is constant, instead of power in kW which changes from moment to moment.

My original point is that the Setec unit has a 20 kW nameplate and delivers the correct output current. However, it doesn't seem to take in enough power at 240 V in order to deliver that output current for the nominal 20 kW. 240V * 40A is only 9.6 kW. No matter how you chop it up, if the input is limited to 9.6 kW, then I cannot see how the Setec can deliver 40 amps at the voltages EVs typically charge on.

ga2500ev