[RE-wrenches] Low Frequency transformer off-grid inverter options

[Dave Angelini Offgrid Solar]

There is not anything I know of that will out surge XW pro 6948. A great 
monitoring platform and much better support/installer training in the 
last 18 months. Perfect for a shop with unknown peak surges.

Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail  offgridsolar at sti.net
text 209 813 0060

On 2023-01-13 11:57 am, Jay via RE-wrenches wrote:

> Hi Mac
> 
> The radian is low voltage transformer
> Based. Has hella surge capacity
> 
> I would consider what web based monitoring system he wants and go with 
> that platform.
> 
> Regardless of system I'd install soft start/vfd on the larger units. 
> Just easier on everything.
> 
> The solark 12 doesn't seem to be good for larger loads and doesn't do 
> out of balance well, and limited to 6kw per phase. The new 15 might be 
> better, not sure. Numerous YouTube videos showing side by side vs XW 
> and radian. Both run stuff over their rating which the SolA won't run 
> even though its under its rating.
> 
> Good luck
> 
> Jay
> 
>> On Jan 13, 2023, at 11:34 AM, Mac Lewis via RE-wrenches 
>> <re-wrenches at lists.re-wrenches.org> wrote:
> 
>> Hello Wrenches,
>> 
>> I have a new client that has ran a pretty decent wood shop for about 
>> 10 years on a Magnum 4448.  He's got some large loads, planers, saws, 
>> compressors vacuums etc.  They are really nice, heavy duty pieces of 
>> equipment.  Amazingly, the Magnum has been able to start these loads 
>> for the most part for 10 years, but he has reported that it has gotten 
>> worse lately (could be a load issue), brown outs, dimming etc
>> 
>> He wants to upgrade the system, get remote monitoring etc.  I tried a 
>> test with a Sol-Ark 12, and it won't start these large motor loads.  I 
>> was a little surprised by that but I know they aren't as good as the 
>> low freq transformer based inverters at these surges.
>> 
>> I confirmed that its not just an overload from imbalance because the 
>> 240V loads will also overload it.  I got an inrush measurement of 
>> 48.5A Ac @240 (but it didn't start the load before Sol-Ark would shut 
>> off)
>> 
>> What are my options?
>> Schneider XW Pro 6848
>> Outback Radian 8048 (Is this a low freq device?)
>> Sunny Islands are beasts but weird to work with and not user friendly
>> 
>> Any others I should consider?  He does have some significant 120 only 
>> loads so I don't think the Outback vfxr are a good choice.
>> 
>> Is it as simple as saying if the Magnum can start this load, the 
>> Radian should?
>> 
>> I appreciate your input!
>> 
>> --
>> Mac Lewis
>> 
>> "Yo solo sé que no sé nada." -Sócrates 
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