Probably because these small three phase inverters are adapted European
designs. In Europe, three phase 415 is normal. The Tripowers have an upper
voltage range of 480V so adapting them to the US is pretty easy. To adapt
to 208, all the power boards, terminals, and cabling would need to be twice
th
For 240 high-leg delta systems we typically use multiples of 3 SunnyBoys, which
do not require a neutral connection. Without the neutral the high leg is not
an issue. For smaller systems a single SunnyBoy also works well connected to
phases A and C. While the utility company may not be a fan
Don wrote -
"Is the Fronius 11.4-3 the only 3-phase inverter that can work with 240
3-phase with a hi-leg (stinger)?"
Well I don't know about other brands, but can guarantee that the SMA 10TL
doesn't work on a 240 Delta with high leg, because we got burned by that.
Had to change two of the
Great news, everyone -- the assigned commissioner ruling (ACR) for battery
based NEM eligibility has been released last night, and it looks very
positive. The ACR would "give storage devices meeting the Guidebook
requirements the same benefits available to renewable generating facilities
under NEM
The Aurora 10K PVI are available in 208V.
http://www.power-one.com/sites/power-one.com/files/documents/renewable-energy/datasheet/pvi-100-i-nadatasheet.pdf
On Fri, Oct 18, 2013 at 12:31 AM, Marco Mangelsdorf wrote:
> Yeah, lots more choices out there in the 10+ to 30 kW range….but pretty
> much
Chris,
Good point, we've installed a few of these P1 10k units and have been
relatively happy. My understanding is that the first batch being sold in
the US was very problematic but I think they're ironing out the kinks now.
We have had a couple of failures but P1 tech support swapped them with
Marco,
Besides the good responses you have already received, 20-30kW, 480V machines
are really targeting larger installations that would be on facilities with
480V. I would generally not build a system with 480V inverters on a 208V
service. For large systems, there are large inverters runnin
Hi Bill -
Thanks, this is helpful info. Do you know how to calculate or approximate
how we would keep the unbalanced voltage to less than 3%? I guess I need to
check out ANSI/C84.1-2011 but I thought maybe there are some ballpark rules
of thumb.
Thanks,
August
*August Goers*
Luminalt
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