Esteemed wrenchers.
The day before yesterday, I tried to commission a grid-tied system with two
Outback Radians and an Outback FM100. I got an event saying that it had a phase
loss error on Port 2 (which is the slave). I tried looking online and in the
manuals, and I checked all the
Dave – how is Rapid Shutdown being complied with? And what load requires 240V
– or is that needed to “fool” the PV inverters?
With two SB-40s, you have the ability to wire for the homeowner two Secure
Power Supply circuits – and get up to 2000W (at 120VAC) from each when sun is
up and grid is
The downside of the SMA SPS is there is very little headroom to surge
and start a well pump or a fire pump. There is also the major problem of
sundown.
Dave Angelini Offgrid Solar
"we go where powerlines
don't"
http://members.sti.net/offgridsolar/ [1]
e-mail offgridso...@sti.net
[2]
text 209
Hi all,
I get asked this question frequently, as I am sure many others do, and of
course the first answer is "it cannot be done". But can it? I have a
customer who is very keen on trying to make this happen. After a few
lengthy conversations, he still wants to try it, even after understanding
the
Hi Brad,
Not a bad idea with this one to run the loads off the SPS's. Has anyone
ever tried wiring these directly into a panel, rather than into an outlet?
And do you know if the 120V signal from each one would match up, or do they
work independantly? In other words can you wire both SPS into the
Hi Mike,
For rapid shutdown, we are on NEC2014 in NY. So module level is not
necessary.
And the SPS is a huge reason for the SB inverters on this one. And in this
case, it is almost exactly what the homeowner is looking for. But with the
two inverters, can those SPS be wired into a panel rather
If using SMA’s Rapid Shutdown System, the SPS function is available as RS is
initiated in the manner you described. If using the TS4 units for 2017 690.12
compliance, the SPS function is not available on the SB US-40.
Each SPS circuit is independent – there is no way for two Sunny Boys to
I replied to another message about code/RS.
Each SPS circuit is independent, so no 240V waveform possible.
And as was mentioned by Dave, be careful about planning to have motors or pumps
be started by the SPS. The array cannot provide surge current like a battery,
so the inverter is limited
If you're not using the SB -40 inverter's rapid shutdown system, it has the
SPS Secure Power Supply which does just what your customer wants.
My understanding from talking to inverter mfg, is that trying to do AC
coupling with a smaller battery inverters does not work because the
anti-islanding
Yes it can be done, I was testing the sma1800 years ago with an outback 24
volt inverter and it worked fine with in its power range.
On Fri, Sep 20, 2019, 6:41 AM Dave Tedeyan wrote:
> Hi all,
>
> I get asked this question frequently, as I am sure many others do, and of
> course the first
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