Joel,
While Enphase inverters will work in an AC-Coupled system, be aware that
Enphase does not support the use of their micro-inverters with any battery
system, and will likely not honor their warranty if their micro-inverters are
used that way, at least not at this time. I understand that the
Hi Wrenches,
I'm putting together a proposal for a national company that has a few remote
installations. They are looking for options for saving generator run-time using
an inverter-charger/battery combo with the existing gensets. Does anyone have
any real world examples of realized fuel saving
Look at the Acme T-3-53044-S.
I used this in my last system.
-Glenn Burt
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Aaron
Mandelkorn
Sent: Friday, April 13, 2012 6:41 PM
To: RE-wrenches
Subject: [RE-wrenches] Sunny Island
Joel,
Use a Magnum PAE system for this. Their MS4448PAE with current
firmware has frequency-shift capabilities, to allow control of the
Enphases' output when the grid is down. The GT output should not
exceed 80% of the Magnum(s) rated output; stacking is allowed here
Wrenches,
I have a customer who wants solar modules and Enphase inverters, but he also
wants PV and battery backup power during a grid outage. Are any wrenches
doing this? How? Thanks for sharing your knowledge.
Joel Davidson
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Christopher,
One very small, under-the-radar distributor with whom we have worked
for years and who gives very good service is Hitney Solar Products,
928-636-1001, i...@hitneysolar.com, www.hitneysolar.com.
No bells and whistles, though, and limited product lines. And to
Dear wrenches, I will be installing a single Sunny Island 5048 for a battery
backup system that will utilize a Sunny Boy 5000US as well as 240 volt loads.
I know that Outback makes a 4 and 6kv autotransformer and there are units rated
as much as 8kv from other companies. Being a 5000 watt inv
Wrenches,
We installed many systems using BP modules back in the late 1990s.
The standard building block of the time was the BP 275, the
single-crystal 12V 36-cell module of that time. The frame size was
21.1" by 47.6", I think.
What modern panels have compatibl
Helios modules are the strongest player in Domestic module market.
Our distribution highlights the larger 72 and 96 cell lines and we
find both to be very high quality.
Our network is pleased with the domestic content (98%) on the D
modules and the product is more competitive than other US
The inverter was a VFX, keep in mind however it turned out not to be an
inverter issue but instead too high of an AC input setting.
>From the Solar, Wind and Hydro powered office of Jeff Oldham/Regenerative
>SOLutions
53 Year Old Mom
Wrenches,
Good points.
To recap: Max recommended strings in parallel on cyclic applications is 1 to 3.
More than 3 strings in parallel will over time promote unbalanced charge of
the strings. Unbalanced charge will promote sulfatation (lead sulfate crystals
hardening) of the plates on the unit
I have seen this happen in an 80 volt single string of 85 – 17’s.
They got hot enough to melt the cell covers into the cell structures a couple
inches.
It was a mess. This was at the same time that the replacement packs were
damaged in shipment by something falling on them and smashing a cell t
I've seen batteries get very hot from deficit
charging, where batteries are cycled rapidly and never fully charged.
At 10:15 PM 4/12/2012, you wrote:
I have seen very hot batteries infact batteries
that melted. and caught fire. the problem was
that the string was several strings in parallel
We have been using the same wholesale supplier for many years for most
of our solar electric equipment purchases. It's been a difficult
relationship. Orders are not acknowledged, delayed in processing, delays
in shipping, etc. They advertise as a nation-wide supplier but they are
not staffed o
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