Yes good thought Jay but it strikes me if we are trying to offset the results
of anticipated bowing with crowning its time for a beefier frame or thicker
glass. REC modules went with 2 cross bars in their frame when going to 72 cell.
I’ve been observing frames get thinner over time - wondering
Wrenches
In the way back when years Sharp had one then two braces across the short
side and stronger frames.
Regarding the glass issue to me it sounds like poor quality and little QC
of products. Again years ago l had a shipment of SolarWorld modules that
the frames were bowed out on the long side,
David, Wrenches
I do not see anything talking about glass just the frame and even if they
included glass 1 mm over 1m this is still out of that tolerance, to me it
sounds like poor quality control or is internally considered acceptable.
Jerry
On Mon, Nov 18, 2019 at 7:04 AM David Katz wrote:
> H
Yes. I think that response was lacking. And it was dated over a year ago.
On Mon, Nov 18, 2019 at 9:21 AM Jerry Shafer
wrote:
> David, Wrenches
> I do not see anything talking about glass just the frame and even if they
> included glass 1 mm over 1m this is still out of that tolerance, to me it
I just got a call from a Skystream owner in which he said that it just
stopped putting out power. I haven’t worked on one the yet. Any ideas what
the failure modes are. He said ac power is getting to the turbine. Any
suggestions on how to troubleshoot. I am assuming that the problem is up
on the
Jay
Not sure what you are implying by this comment. I do not believe that
glass is pre bowed by any glass manufacturer that I know of nor on purpose
by a module manufacturer. Glass is manufactured shipped and stored flat on
a pallet. How were the modules Shipped? If glass down with no packing i
Module bent or glass warped
OK Kristopher is the glass warped or is the frame bent, looking at the pic,
there is cardboard spacing each module so there is a gap. If the binders
are in the middle then that will bend one or more modules on each side, now
to bend them all the way through that center b
Kristopher
OK great, well not great to me it is a shipping packaging issue, the
cardboard gap is spacing out each module and they were tightened down
untill one by one the frames came into contact and crushed them together,
the reason one is opposite is because it was installed backwards from the
r
If they were deformed with a tightened strap, it seems to me that every
other module would be bowed in the opposite direction...this is not the
case. Every frame is bowed up to the glass side including the one on the
end that was installed glass side in for protection. I will check the
glass itse
Bill Hennessy
Berks Solar, LLC
371 Centennial Rd
Mertztown, PA 19539
o 610 682 4300
c 484 560 4666
NABCEP certified installer
PA contractor #44411
www.berkssolar.com
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Kris,
It’s my understanding that this is a fairly common defect with thin framed
72 cell modules. I have noticed this convex shape mostly on modules in the
30-35mm range of frame thickness and have personally seen this with 72 cell
modules from Canadian Solar, REC, Hanwha and Yingli. I have yet to
This is a strange one. I have a Schneider SW 4024 installed in a remote
area of Colorado. Cold and high altitude. Since the fall every time my
customer has gone out to her cabin she noticed that the inverter is off.
She proceeded to turn the unit back on by pressing the button on the SW.
There a
Totally sounds like Low voltage disconnect to me. Many, Many times the
generator does not start when it should or connect to the inverter.
I've had 2 systems recently, that both shut down, 1 had the LVD set
really high, higher than the gen start, so that definitely didn't work.
The next one
Aaron,
Ditto what Ray said... I think it's a LVD, LBCO... but could also be a
connection cabling issue have them put a wrench on the terminals, have
them loosen first, then retorque, don't just have them "tug test" them as
if they are already welded it'll look like a good connection... Make sur
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