Have any of you SunPower dealers used their modules with the
fairly new SMA line of transformerless inverters (8, 9 and 10 kW @ 120/208
only)?
I’m trying to get a compatibility answer directly from
SunPower tech support, but am wondering if any of you have tried this combo.
Thanks,
hello Wrenches,
I have an organization in Haiti that I have assisted with PV projects in the
past. They drill public wells and have a well (4 casing) that they would like
to pump with PV. Problem (one) is that well will draw at ~ 20 gpm and they want
~ 25,000 gpd from the well. I have tried
Tom,
It can be done, depending upon how deep the static water level is and what
additional lift or pressurization needs to be overcome.
The SQ-Flex will run at highest capacity off an AC source, so I'd consider
using an inverter system and grid power, with additional solar designed to
supplement
The SQ-Flex can run directly from a high voltage battery/PV system, but with a
battery based system at over 60 volts or so, you have a lot of problems finding
a good charge controller.
So, even with the associated losses you are going to get with an inverter
system, that is probably the only
Tom,
Warren makes a good point that I'll build on here. Just because
someone asks for a particular output doesn't mean you should give it
to them!
If their desired gpd requires an extreme solution, Just Say No. If
you have to add a large battery bank and
I’ve used that line, Tom, with non-SunPower mods.
Those three models definitely should NOT be used with SunPower modules due to
the fact that there’s no grounded current-carrying DC conductor in the circuit.
marco
Have any of you SunPower dealers used their modules with the fairly
Ditto on the AC option. Most of the battery based PV
systems I have seen outside the US are completely lacking
for maintenance esp. the battery bank. Most folks are not
aware of or have available distilled H20.
I saw a village PV - telephone system in Fiji that the
batteries only work after
Needed - [1] Xantrex GTI box with functional guts, new would
be best.
Need to replace a lightning damaged GTI.
Schneider Electric does not have one.
Please contact off list, Thanks.
Dana Orzel
Great Solar Works, Inc
E - d...@solarwork.com
V - 970.626.5253
F - 970.626.4140
C - 970.209.4076
web
Tom,
You might consider just using an SQ-O series Grundfos pump. They
operate at 120 VAC (or 240,
depending on the model) and have the capability of pumping up to 10 GPM.
You could buy two for the
cost of one SQ Flex and have the other as a backup. I use one of these at
my (solar powered)
HI all I check into the Tristar and it connects the same as the Outback, what I
could not remember was the set up and communications cableing. The set up
relies on the negative floating and in this case, the MS software and a Laptop,
sets the 36 volt charging profile, the communications port
I see the FM60 had a 60 volt option. Why not just use a single one at that
battery setting for charging the battery bank?
Todd
On Thursday, February 10, 2011 9:44am, Darryl Thayer daryl_so...@yahoo.com
said:
Hi all
I have attached a PDF of a charging scheme using Outback FM controllers.
the post I responded to started with was the 72 volt nom battery pack charging
off from solar. the solution involved using two chager controllers in series,
charging off the array in sort of a bipolar fashion. I used this series
chargers to charge a lead Sled 72 volt car in my dark past. The
I continue to have issues with inaccurate MX60 meters, I can calibrate for
EITHER the lower voltage setpoints OR the higher but can't get accuracy across
full scale. I've seen this on nearly every MX I've been around. This has forced
many a customer to run to start their genny on low V falsely.
I strongly agree with the no batteries approach. All issues mentioned come to
fruit and in far too few years those batteries will be abused to toast and now
the system will sit for a very long time if not forever and no water for the
community. Your best options are to live with what you can
Just one note - if batteries fail - no, make that when
batteries fail - the system is dead. If a tracker fails, the system
continues to operate at a reduced output. So the risk is reduced. I,
too, would prefer a fixed array, but a tracker is a concession to
their gpd
HI Allan,
Ive got to disagree on the tracker part.
The cost to buy and ship a tracker to some far off land, I think if you do the
math, modules are cheaper and more reliable.
jay
peltz power
On Feb 10, 2011, at 5:20 PM, Allan Sindelar wrote:
Just one note - if batteries fail - no, make
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