Drake I forgot to ask, but I’m thinking this is a new problem on an older system that was working normally?JayOn Oct 30, 2023, at 11:15 AM, david quattro via RE-wrenches wrote:I’m not familiar with Outback defaults but most inverters I’ve dealt with have a grid tolerance of 10% +/- so 216 to
That is my point was that the only consideration that deals with overcharge
that I could possibly think of is with systems that have a poor implementation
of the frequency shift (like the older Schneiders).
I think that AC coupling gets a black eye from the old days and from brands
that have
I’m not familiar with Outback defaults but most inverters I’ve dealt with
have a grid tolerance of 10% +/- so 216 to 264VAC.
On Mon, Oct 30, 2023 at 6:57 AM Drake Chamberlin via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Hi Jay,
>
> The inverter won't even connect to the grid.
There isn't a failsafe system. For example, if you have a battery
temperature sensor dislodged from a lead acid battery, you can have
overcharged (or undercharged) batteries. And there is no perfect algorithm
for charging based on voltage, either. And as batteries age, you have to
adjust setpoints
Good Morning Wrenches,
AC-coupled systems are generally not pleasant to batteries of any type. I
would not AC Couple any Valve Regulated Battery system as you are, in
essence, "overcharging" them at times, and this can and has led to battery
failures (usually overcharging and swelling) that all
Jason:
Thanks for contributing to this thread. I did not realize it would create
so much interest. My main point is to establish a definition for
AC-coupling, and I believe we do have consensus on that. The next question
to ask is AC-coupling a good thing?
You make the point that BMS
We have used Marutek molybdenum self tapping screws successfully for the
past fifteen years in the Bahamas on metal truss roofs. On the East Coat,
Manasquan Fasteners is our go-to fastener company.
Daryl DeJoy
On Mon, Oct 30, 2023, 10:46 AM Jason Szumlanski via RE-wrenches <
I agree that you can get impressive pull-out resistance from fasteners in
plywood decking only. Two brands that publish pull-out values are
OMG/Drill-Tec and Blazer. The #15 OMG screws are what we lean toward.
John Mansville also has a "High Load Fastener," but I think it's just a
rebranded OMG.
I have the same question as Jerry. It's not brand-specific, either. We have
had panels from various manufacturers over the years where we installed
them, and clients noticed a difference in color/look/reflectivity from day
one essentially. Sometimes, it's just the angle you are looking at them. We
I read through this thread, and I don't think one important aspect was
covered with respect to "overcharging" batteries. There may be risk with
lead acid batteries connected to a hybrid inverter that is AC coupled. But
LiPO batteries have a BMS that is there, in part, to protect the battery
from
Hi Jay,
The inverter won't even connect to the grid. It stays in the state where
it is sampling the grid, AC in light blinking.
Is the default high voltage for the nominal 240 V 280? (IE 140 V X 2).
Thanks for your help.
Drake
_Drake Chamberlin_
_Athens Electric LLC_
_Ohio
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