Bad switch
On Mon, Nov 1, 2021 at 5:44 PM Jason Szumlanski <
ja...@floridasolardesigngroup.com> wrote:
> See attached image. Notice the discoloration on the top of the left fuse.
> It's always the same thing, same place.
>
> Jason
>
> On Mon, Nov 1, 2021, 8:30 PM Jason Szumlanski <
>
I should also mention that it has nothing to do with ambient heat. This has
occured in all seasons and with disconnects in direct sunlight on a south
wall and disconnects in air conditioned garages.
It's just a garbage product. We switched to Square D for 60A D222NRB
fusible disconnects and are
It's the disconnect. We had dozens of this subpar disconnect design fail on
Enphase systems. The 2 Pole has the same issue.
GE gave us some nonsense answer that it's General Duty and not designed for
continuous high power. Even 40A combined Enphase systems will blow a 60A
fuse.
What you will
I have had wire issues also but to take a month l would be surprised. If it
does it in the early Am the inverter is acting up. GF or ArcFault should
only be on the DC side
On Mon, Nov 1, 2021, 3:50 PM Dave Tedeyan wrote:
> The fuses are Ferraz Shawmut Trionic TR60R. 60A, 250V. I looked them up
Ah, tech support's dreaded "blaming it on the comms." Enphase sent me down
that rabbit hole for a few hours of wasted time.
Yes, this site has terrible interference issues, but that doesn't stop the
micros from eventually getting good comms and reporting data regularly, if
not slightly delayed.
I considered the AC voltage but it's a stable 245V or so. Enphase couldn't
see anything wrong with AC voltage on their end. I suggested a grid profile
change, but they didn't see that as a necessary diagnostic step.
On Mon, Nov 1, 2021, 6:56 PM Dave Tedeyan wrote:
> Hi Jason,
> I recently
It's not the modules. Mission Solar 420s. I have swapped panels between
working and non-working micros to eliminate this possibility.
On Mon, Nov 1, 2021, 7:04 PM Jerry Shafer wrote:
> It may be the modules not the inverters, in the past with good comms but
> little to no production l had blown
It may be the modules not the inverters, in the past with good comms but
little to no production l had blown diode bridges, actually melted the
plastic box and exposed the straps that were connected to the jboxes. What
modules did you use? Can you view them up close
Jerry
On Mon, Nov 1, 2021,
I would think that if there is an internet connection that a call to tech
support would make things quicker, since they have access to internal error
codes which usually give a pretty good indication of what the problem is,
or at least usually help direct where your troubleshooting efforts are
I would definitely check the insulation on the AC-side wiring as Lloyd
mentioned. Sometimes small faults don't show up until there is moisture in
the air (or conduit) or until max current conditions. As long as you have
time delay fuses property sized, it would be rare for them to blow more
than
Hi Jason,
I recently did a microinverter swap of the old D380's to 54 of the IQ7
190's. Once it was commissioned I started seeing random MI's drop out, but
not always the same ones. I am pretty sure that this was due to
overvoltage. I measured the line voltage at 255v with the system turned
off.
HI Jason,
I had a neighbor replace his old units under the exchange program. less than 1
month later 1 appeared to die. Tech support said without hesitation it was the
panel that died. I got called in and the unit was producing power but comm’s
were out. These were the 190’s.
More
The fuses are Ferraz Shawmut Trionic TR60R. 60A, 250V. I looked them up to
find that they are time delay, RK5 type.
I would imagine that there is monitoring, but not being my installation, I
don't have access to it. That's a good idea though to get access to see
when this is happening.
I am also
We have a site with 34 microinverters at two orientations. It's a couple of
months old. After about a month a couple of microinverters started acting
up and dropping power production for no apparent reason, then finally
started throwing Device Produced No Power issues and totally sopped
producing
Does this system have monitoring, what time of day is this happening, the
monitoring site should show output at time of failure, what leg is tripping
both or one side? You may want to look at the fuses they are using, rapid
blow, slow blow, rated for the duty these are being used for. You can also
HI Dave,
Which exact fuses do they have installed?
I’m guessing they are blowing due to not being constant load rated fuses and
summer higher temps.
jay
peltz power
> On Nov 1, 2021, at 2:26 PM, Dave Tedeyan wrote:
>
> Hi All,
>
> I am servicing a system that keeps blowing fuses on the
Dave,
My first thought would be a small nick in wire insulation going to ground,
causing the fuse to fail over time.
We had a similar situation with a much larger system where the culprit was hard
to notice…
Best regards,
Lloyd
Lloyd Hoffstatter
Sunstruck Consulting
Sent from
Hi All,
I am servicing a system that keeps blowing fuses on the AC side, although it
appears that everything is sized correctly. It is a SolarEdge SE11400A-US
inverter.
Max continuous output current is 47.5A x 1.25 = 59.4A. There is a GE
TG3222R
60A AC disconnect, and it is wired up with #6
You can absolutely charge to 100% and you can discharge to 100%. Lithium is
in another world compared to Lead Acid. You don't see LA cars driving
around.
But you shouldn't leave Lithium at 100% for months on end, it can be
detrimental. That's not likely to be an issue for solar systems.
Your
Friends:
I recently studied the implications of replacing a negative grounded
grid-interactive inverter with transformerless inverter or inverters. I
had noticed language in 690.9(C)Informational note that indicates only the
positive PV lead needs to be disconnected. August Goers kindly
Hey Folks,
From the SimpliPHI/Outback integration guide download,
using an Outback (I assume any brand of) charge controller (EG: FM80,
FM60, FM100), their chart shows absorbtion voltage at 56.4 for 51.2 nom
PHI batteries with time set at 6 minutes, page 18. If using the
There's no benefit to charging to 100%. If the charging parameters are set
up correctly, you'll never really get to 100%.
If you look at most prismatic cells, the absolutely maximum voltage is
3.65V. My systems are set up to charge to 3.4V or 54.4V. I take that as
100%.
On Sun, Oct 31, 2021 at
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