Wrenches,
I am getting more and more call about orphaned Aquion systems that have
gone bad. Many of the systems have one or two "layers" that have gone bad.
Voltage spikes up to the 14-15V range while charging and cratering to zero
if even the tiniest load is put on it (e.g. turning on a charge co
Hello, Mechanix~
I don't want to actually own the standards document mentioned above...but
does anyone have a summary for the behaviors that are required? I'm
especially interested in the anti-islanding functions for 120/240 split
phase 60 hz.
I'll bet it's something like a window of acceptable v
We got such a black eye from the Aquions we installed that we had to replace
entire banks to regain customer confidence and prevent bad word of mouth talk
about the company.They were a big loss both to our reputation and financial
health.I recommend discussing the issues and replacing the entire
Hi Jay,
Regarding the BMS of various manufactures compared to the inverter
manufactuers SOC calcs, my only experience is with a 4 stack Blue Ion
System on a Sunny Island system. Its not possible to tweak the Sunny
Island SOC system at all except by changing battery type (I'm not totally
sure of t
Hi Wrenches,
Does anyone have a recommendation for a meter main with a 225A bus and pass
through lugs? Eaton and SquareD make meter mains with a 225A bus, but no
pass-through lugs, so they don't work well for most retrofit applications.
We would like to connect our inverter output to a feeder tha
Calc loads and see if you can replace the main with a 175A breaker if it
exists, or even 150A. This main breaker downsizing has been a go-to
exercise for us for existing meter-mains. It's frustrating being limited to
40A on the load side. That doesn't even get to 10kWdc with Enphase IQ7+,
which is
I should note that if you are on NEC 2014 the 60 OCPD is not the correct
figure to use in the 120% rule. It would be 125% of the Inverter Output
Circuit rated current.
It's probably a moot point in this case, but it is an important distinction.
On Thu, May 9, 2019 at 3:06 PM Jason Szumlanski <
As Aquion said, loosening the main nut will destroy the battery. I can
vouch for that as well, not my doing, but I could not recover the batteries
where that had been done. I tightened the nuts and got just about one cycle
before they were gone.
I suspect that the temperature cycling of the batter
Yes, good point about the 120% rule - thanks Jason. Unfortunately the
existing meter main isn't one where we can downgrade the main breaker. I
did find this lug kit that we can add to a 225A Eaton meter main which
might do the trick.
https://www.platt.com/platt-electric-supply/Load-Center-Accessor
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