Hi Nick,
The 1400w difference is in terms of a DC load on an AC output, which is common
when using variable speed appliances that use internal diodes that modify the
sine wave. This does not apply to true AC loads where the Sol-Ark can do 4800w
continuous at 120V.
Dustin Douglas
Engineering Support Lead
(972)575-8875 ext. 108
http://www.Sol-Ark.com
---- On Wed, 03 Feb 2021 15:21:33 -0600 Amos Post
<integrityenergy...@gmail.com> wrote ----
Thanks Larry,
This would be a 240V to 120V step down configuration correct? So the sub panel
would be 120V only?
Best,
Amos
Amos Post
Integrity Energy
W 802.763.7023
C 802.291.2188
http://www.ienergyvt.com
https://www.facebook.com/integrityenergyllp?ref=hl
On Feb 3, 2021, at 4:10 PM, mailto:la...@starlightsolar.com wrote:
Amos,
When using it in balancing mode, as seen in the attached image, the PSX will
provide 120Vac from either leg and the inverter output should stay balanced. A
240Vac circuit from the main panel goes to the PSX then to a sub panel and any
240Vac loads stay on the main panel.
Larry Crutcher
Starlight Solar Power Systems
<Screen Shot 2021-02-03 at 2.00.39 PM.png>
On Feb 3, 2021, at 1:49 PM, Amos Post <mailto:integrityenergy...@gmail.com>
wrote:
We have had this issue with a recent installation. It’s a new off-grid house
build, and so not many loads to speak of yet, except mainly power tools. The
Solark 12K will not start any of: portable air compressor, table saw, and
sometimes struggles with a miter saw, which are each 16amps or less at 120V,
but I have measured close to 50amps start up for the air compressor and table
saw. The air compressor and table saw are 1.5HP each. What helps is if the
motors are warmed up, or putting another load on the other leg to balance the
inverter’s output.
Was thinking we would install a couple of dedicated 120V outlets for
“high-current” 120V loads with a PSX-240, stepping down the inverter's 240 to
120. My understanding is this will solve the issue for starting these loads,
but not sure if we might run into issues with inbalance down the road... Would
be curious to know if there’s another way to balance all of the house loads
using the PSX-240?..
<IE LOGO 150x78.jpg>
Amos Post
Integrity Energy
W 802.763.7023
C 802.291.2188
http://www.ienergyvt.com/
https://www.facebook.com/integrityenergyllp?ref=hl
On Feb 3, 2021, at 2:41 PM, mailto:la...@starlightsolar.com wrote:
If it turns out to be true, could you simply add the Outback PSX-240 to balance
the loads?
Larry Crutcher
Starlight Solar Power Systems
On Feb 3, 2021, at 10:52 AM, Nick A Lucchese <mailto:luccheseso...@me.com>
wrote:
Good morning Wrenches,
I’ve strongly been considering using the SolArk 12K unit for awhile but have
heard from a few folks that there can be somewhat frequent issues with the
inverter shutting down from line to line imbalance. As little as 1400 watts? I
could see where these instances would be minimized with attention to detail on
balancing all the loads but if’s as little as a delta of 1400 watts that might
occur with something as innocent as a toaster oven. Seems like it would also be
less of an issue in a grid back up or AC coupled scenario but for off grid I’d
be bummed to be getting calls every couple weeks from an off grid client that
trusted me to offer the right equipment.
How much of an issue is this? Is it getting exaggerated? Those that have NOT
had this happening was it on a full time off grid site?
Has it happened less on sites using the "Limited to Home” mode? I have an
upcoming project that was going to be setup with a couple Radians in HBX mode
and my thought was perhaps it might be an ideal solution there but if the
continuity of electrical service was going to be provided mainly through
batteries and inverting and not through the pass through relays the majority of
the time then the site might likely experience this issue with imbalance
shutdowns.
There are many attractive features of the SolArk and I really like the thought
of taking advantage of the 185 amp DC charger versus the Radian’s 115 but I’m
kind of thinking the risks may outweigh the benefits if these shutdowns occur
even once every couple of months. Any of you have a long enough history with
them to chime in with your observations? Are they most reliable for AC coupled
with backup rather than off grid or the “Limited to Home” mode?
Thanks for your time,
Nick A Lucchese
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