Thanks everyone, the person I started with a SolArk asked me to call
them, so I've left a message. I'll let everyone know what the
determination is. Bradley raises a good point about shutting down the
back up loads panel. We would like to have an outdoor accessible
disconnect switch between the back up loads panel and the inverter so
that can happen more easily for first responders. I have to go back and
understand a few more things and will let you know. Thanks again. Chris
On 11/16/2022 10:14 PM, Bradley Bassett wrote:
The issue as I see it is that the Tigo RSS Transmitter and the APsmart
transmitter are both rated to draw up to 800ma. The 12VDC output of
the Sol-Ark inverters is limited to 100ma. Since some have used this
successfully I suppose that means that either these transmitters don't
really use more than 100ma, or the 12VDC output of the Sol-Ark can
actually handle more than that, or some combination of both. If I
owned a Sol-Ark I'd test this to see what the answer is, but alas I do
not. I design systems using a 48VDC to 12VDC power supply (Online
Components has a Mean-Well device for a reasonable price, sorry no
link from here) and a fairly rare IMO shutdown button (we have that)
that has both NO and NC contacts. This is needed because to shut down
the Sol-Ark inverter requires a NO contact that closes on initiation
which is quite rare in RSD initiators. And you do still need to shut
down the inverter as well as the RSD devices so that it does not
continue to feed voltage back into the PV circuits (I think). This
also shuts down the AC output of the Sol-Ark which tends to make the
inspector happy. Since it also shuts down the inverter, that limits
the battery to its own circuits, does this count as a battery
disconnect also?? I'm seeing some inspectors calling out for battery
disconnects which is much more problematic.
Brad Bassett
AEE Solar
On Wed, Nov 16, 2022 at 4:27 PM Jerry Shafer via RE-wrenches
<re-wrenches@lists.re-wrenches.org> wrote:
Wrenches, Christopher
I have done quite a few and per solark have always connected in
the inverter with no issues, Now with that connecting to the
output side it would do much the same work until it did not then
shut off the modules.
Fun times
On Wed, Nov 16, 2022 at 6:33 AM Christopher Warfel via RE-wrenches
<re-wrenches@lists.re-wrenches.org> wrote:
Hi, We are doing our first system with these two devices. The
inverter is SolArk 12P (mutimode) and the Tigo product for RS
is the TS4F. Tigo has me a little bit walking in circles.
I told them that SolArk says not to use the 12VDC RS output
terminals for connecting the transmitter. I gave them the
attached drawing which they ask for, which shows the
transmitter connected to a 120VAC/12VDC breaker which they
supply. They told me to wire the 120VAC source to the main
service panel so the array would shut down on loss of power. I
told them that is exactly NOTwhat I wanted to happen as that
would stop the battery charging when there is a loss of
utility power. I said I wanted the 120VAC source to be the
back up loads panel. After about a week of calls and emails, I
got an email back saying to use the SolArk 12VDC terminals for
RS. I just emailed them a screen shot of the SolArk manual
that says not to do that.
At this point, I am asking anyone on the list to let me know
how they wired the transmitter successfully. Thank you for any
guidance, Chris Warfel
--
Christopher Warfel
ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
401-466-8978
<http://entech-engineering.com>
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--
Christopher Warfel
ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
401-466-8978
<http://entech-engineering.com>
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