Also have a customer with a Leaf that can charge from a dual GVFX
system. He uses the 120 vac charger. Lower charge rates are more
efficient both for the car's battery and the solar/ battery system, so I
recommend sticking to the 120 vac chargers if possible.
Ray Walters
Remote Solar
303 505-8760
On 6/7/20 6:04 PM, Darryl Thayer wrote:
I was trying to charge a Nissan Leaf with a ? Iam not sure but two VFX
i think old age.. i mostly rember having the problem. I think the
car harger had a max of 2kw
On Sun, Jun 7, 2020, 3:41 PM Jay <[email protected]
<mailto:[email protected]>> wrote:
I’ve got offgrid 2 clients and they have no issues.
They each have a Bolt and can choose the charging rate. They can
run it at either power. But only use higher power when they have
lots of sun.
Older Stacked vfx and Schneider xw, no issues.
I would expect the SW to work, however it’s an odd beast as it’s
waveform steps change with load. More load, more steps, therefor
cleaner so maybe at lower charge rate it’s not clean enough.
As to your issue it could be power factor Being really poor.
Can you tell us what inverter, yea 5 years ago is a long time.
Jay
Peltz power.
On Jun 7, 2020, at 11:53 AM, Darryl Thayer <[email protected]
<mailto:[email protected]>> wrote:
I think you said it well, about 5 years ago I tried to charge a
car from an off-grid system. I did not record my events but the
inverter had twice the power of the level two charger, yet the
inverter would get hot and trip out. I was told a ferroresonant
transformer may help, and it might be different with different
cars. However, I was warned the ferroresonant was to stop input
wave problems from arriving at the output not to prevent the
output wave problems showing up on the input. The off-grid
customer gave up.
On Sun, Jun 7, 2020 at 6:36 AM Hilton Dier III
<[email protected] <mailto:[email protected]>> wrote:
The issue with EV chargers is that they create a lot of
reactive power. Think of it as "slosh" in the waveform. That
means that charging at 2,000 watts sloshes a lot more than
2kW through the cable, plug, outlet, and from the inverter.
If you've got a reasonably good sinewave inverter the charger
will like it fine. However, the inverter might not like the
charger if you cut things too close. Make sure to have a lot
of top end left in your inverter. Always use a transformer
based inverter. The SW series has a big chunk of metal in it,
so that's good. At 120V the Bolt will only draw 1440 watts max.
An aftermarket Bolt 240V charger can draw up to 32 amps.
That's 7.7 kW, so too big for an SW. Treat it more like 40
amps. The OEM 120/240 EVSE (smart charging cord) that comes
with the car can draw 8 or 12 amps at 120V or 12 at 240V.
Assume that the 8 amps is really 12 and the 12 is really 15
or a bit more. I have seen 15 amp plugs and outlets with the
hot prong melting plastic around it. The plug on the OEM EVSE
is 20A rated but make sure your outlet is as well.
--
Hilton Dier III
Missisquoi River Hydro
Renewable Energy Design
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