I have filled out two different online Technical Support tickets with Fortress
in the last two weeks. Most of the time I get a response within 3 hours, and
follow up responses are normally even faster. However, one recently was in
regard to a very specific integration issue with an SMA inverter,
Hey all,
I know well the old adage - "If it sounds to good to be true, then it probably
is." I also know that I have seen numerous windmill scams.
That said, I am doing some consulting for someone who wants to buy and install
this Tesup windmill... Supposedly a 9 kW wind turbine for $999
https
n the AC load output, meaning it will not be monitored by the
Sol-Ark. That's not ideal, but it's nice to have that flexibility.
Jason Szumlanski
Principal Solar Designer | Florida Solar Design Group
NABCEP Certified Solar Professional (PVIP)
Florida State Certified Solar Contractor CVC56956
On
William,
My whole email is in regards to the point you made when you said
"This is not how battery inverters were originally designed to operate. These
systems require careful consideration to avoid battery overcharging."
I both agree and disagree with these statements... depending on what you
William,
The charge controllers could operate in open loop, while the SMA did close the
loop. Open loop works really well for charge controllers.
I question if the closed loop communication was really working correctly if the
SI is reporting 50% SOC when the batteries are reporting 95%… The SI
les we need
to make.
Jason Szumlanski
Principal Solar Designer | Florida Solar Design Group
NABCEP Certified Solar Professional (PVIP)
Florida State Certified Solar Contractor CVC56956
On Wed, Oct 11, 2023 at 10:49 PM Kienan Maxfield via RE-wrenches
mailto:re-wrenches@lists.re-wrenches.org>&g
From what I’ve seen in the discussions here, some people think they’re well
made, but when you do need technical support for any reason, good luck… maybe
people have gotten some support, but if my memory serves me correctly, the
general feeling I got reading the posts was that there was no suppo
I own the Dewalt 2 inch 60V rotary hammer you linked and it is totally awesome.
You’ll be blown away by it. It’s totally worth it.
You might want to make sure to just use the huge 12ah batteries that it comes
with… might be a lot of power demand fire smaller 60V batteries… but I
regularly use m
The Victron idea for controlling gen start is an interesting one for sure.
The idea Mac proposed as far as triggering gen start based on DC current is
easy to do, but as he mentioned it's flawed because the PV input would
effectively reduce the DC current that the shunt sees.
The alternative is
Solar.com
805-438-5600
www.millersolar.com<http://www.millersolar.com>
On Tue, Sep 19, 2023 at 12:18 PM Kienan Maxfield via RE-wrenches
mailto:re-wrenches@lists.re-wrenches.org>>
wrote:
That's actually incorrect, Fortress totally does support closed-loop with the
SMA Sunny Island
That's actually incorrect, Fortress totally does support closed-loop with the
SMA Sunny Island inverters. Here is their integration guide. This has all of
the instructions and coms wiring, etc. -
https://learn.fortresspower.com/external/manual/sma/article/introduction-useful-links?p=dc8b9a9c1b3f
I was just about to suggest the same thing Mac suggested. Any 120 V relay would
work. Just wire it in parallel with the auxiliary relay that is shutting the
inverter off. When the AC input is energized, the relay closes, and your
inverter turns on. I like using a relay that has a base. I trust t
I’m not sure if I fully get what’s was going on or where he was measuring… all
of the readings are low (below 1 kW) if he was messing at the meter after the
household load has combined with the PV output, then this could make sense. The
household loads could be using some apparent power, but the
Dave,
The Thumper creates a high current, high voltage discharge. It uses a massive
capacitor bank that you connect to the conductors on one side. When it works
correctly, it'll cause a massive arc blast at the location of the fault.
Assuming the fault is underground, it'll cause a big thumping
Howie,
I don't have experience with HomeGrid, but I have a well respected friend
(Jason Lerner) who loves them.
I have had awesome experiences with Fortress, and I have been looking for a
chance to try HomeGrid as well. I think the stack idea is really cool!!
I know that this is extremely nit-
Here’s my two cents,
If you do end up putting in two new batteries, and you leave everything wired
the way it is, you’d better really watch the rest of the batteries that are in
that string. The new batteries will have a lower internal resistance, so the
two strings that are all old batteries w
I've wanted to find a thermostat that could handle DC Voltage for a while now,
but I haven't done the research. What I've wanted to do is to tap right off the
PV input, through a thermostat, into a simple resistive heater. That way, it
won't drain the battery to warm the array. If the resistive
Hello all,
I have been an off-grid specialist for 12 years now, and I have never seen or
heard of a charge controller blowing itself up when it was disconnected from
the battery while it was in steady state. What I mean is that if it's in bulk
mode, or absorb mode, or float mode, and the batter
Howie,
I have never heard about them, but I am interested. If you get any more
information, I'd love to hear about it. Do they do 48V batteries? or an AC ESS?
Are there spec sheets available?
I've been able to find very little information about them.
Thanks,
Kienan
Green-Go Solar Distribution
Mac,
Victron would work quite well as well. The biggest drawback is that they don't
have a single unit for 120/240, but stacking two units works great and they
have been really good for surge capacity in my opinion.
I admit that I am biased. I've been using Victron for 6 years, and 3 years ago.
Ray,
I'm curious if your Fortress system is doing better now. Fortress used to do
their support using a platform that was open to the public. It allowed anyone
who wanted to see what they had suggested to other people. I've seen them
recommend a one-time charge of up to 56V to get everything in
Hey all, I really like Fortress and I’ve had amazingly good experiences with
their support. I have had 3 different interactions with Fortress technical
support. They’ve supported me very very well. They don’t have a good phone
number for me to call, but I fill out an online ticket and then the a
I've seen something similar if there was a firmware mismatch... the mate3s had
a newer firmware and the inverters had an older firmware. As was stated before,
make sure that everything has the latest firmware.
Otherwise, I wouldn't know where to go after that.
Cheers,
Kienan
Maxfield Solar
ma
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