Surrette Battery, THE battery company suggests NO MORE the 3 parallel in a
string would like to see 2 preferably.
If there are more the 3 then they really not interested in warrantee issues.
Jamie where are you??
Now a days there are plenty of options for a good size/AH BB that can be
Here is a good reason to spec out 2 volt cells, all of the manufactures have
DC input windows that will allow you to remove 2 volts while getting a
replacment.Conversly we have also installed 26/50 volt battery banks for hi
inrush loads.
Remember when you sized BB w/o charge controllers?
In the past I have seen a lot of issues with PVP inverters. There
was a period, when I was subcontracting, where a half dozen or more
of the units had to be replaced within a short time. Although I like
many features of PVP, I've avoided them since. Have others found
these units to be
Anyone have one of these around? Please contact me off list. THANKS
mailto:t...@swnl.net t...@swnl.net http://www.swnl.net/
www.SWNL.net
Solarwinds Northernlights
Serving Mid Coast Maine Northern California
Me.# 207-832-7574 Cl.# 610-517-8401
Much easier to use a load bank and test the entire pack than to just test a
single cell, the procedure is the same for 1 as for 12 cells.
There soon becomes a problem on recharging a single cell. Hard to find a
potent 2 volt charger to refill them.
Your too far for me to help, try renting a load
Petroleum jelly does work as you say to keep oxygen away from the metal
surfaces but its melting temperature is relatively low making it not a
long-term solution.
A device I saw used on an industrial battery bank years ago used a solid
brass alloy device. A small oblong plate fits over the
I know that CD battery does not like parallel strings and they have a device
that measures the currents in each string
I investigated a fire from a battery bank of 48 volts 4 strings in parallel of
6 Volt 800 AH batteries. The parallel strings was indicated as bad practice
and suspect as the
Hey Tump,
Evergreen still makes these. I suspect Gro or one of the other
Evergreen dealers stocks them.
Daryl
Anyone have one of these around? Please contact me off list. THANKS
mailto:t...@swnl.net t...@swnl.net http://www.swnl.net/
www.SWNL.net
Solarwinds
Called in totrouble shoot a dual Trace SW4048 system that we did not install.
Yes, I know, and we almost never work on systems we did not install, but client was desparate and installer was long gone. System has about6 kW solar, 17 kW generator, 16 L-16 batteries, and is set up to "SELL" solar to
Called in totrouble shoot a dual Trace SW4048 system that we did not install.
Yes, I know, and we almost never work on systems we did not install, but client was desparate and installer was long gone. System has about6 kW solar, 17 kW generator, 16 L-16 batteries, and is set up to "SELL" solar to
We cut a hole in the lid of the Vaseline can, and have a tooth brush stuck in
for applying the goo.
R. Walters
r...@solarray.com
Solar Engineer
On Dec 2, 2009, at 10:28 AM, Allan Sindelar wrote:
Years ago we began using Quick-Cote terminal corrosion protector. At about
$12 a can it has
My (now retired) CD flooded batteries came with a can of a dark, grease-like
paste that was supposedly electrically conductive and that had a higher melting
point than Vaseline. It did a good job of protecting the interconnect bars and
the cable end connections. Maybe CD sells this stuff, but I
We are finishing an upgrade on a similar system with a pair of SW4024s.
I decided to keep the SWs for generator charging, and as a backup's backup.
We then added a pair of Outbacks GVFXs for sell. The SWs only get powered up
for generator charging, or if the Outbacks quit.
Interesting thing about
Esteemed Wrenches,
What is your preferred method for running thermal lines underground? We are
about to start a sizable ground-mount system and want to make sure we do
this right. (I've already seen it done the wrong way, the dirty way, and
the hard way.)
Thanks in advance for any feedback.
Hi Joel,
I think we are all pretty much on the same page.
I'm speaking mainly about a full time off grid residence, commonly with
flooded lead acid and of course a fossil back up generator.
Most of my full time off gridders don't even need to their generator from
late April to early
Darryl,
Do you understand the difference between paralleling the traditional
off-grid way through the bank and using a buss bar? That was my question.
The installations are quite different.
Tom
--
From: Darryl Thayer daryl_so...@yahoo.com
Remember when? Yeah, yesterday. I get more than a few tightwad, penny
pinchers in our store and no matter what I say they are going to do it
THEIR way.
Quote: I watch my meter and unhook the panel if it get's to 13 volts
I'm not kidding.
Another quote: Life's tough, ...it's even tougher
Remember when? Yes, just yesterday.
I get more than a few tightwad, penny pinchers in our store and no
matter what I say they are going to do it THEIR way.
Quote: I watch my meter and unhook the panel if it get's to 13 volts
I'm not kidding.
Another quote: Life's tough, ...it's even tougher
Hi all
I did a paper for the ASES annual conference proceedings, where it suggested
from actual 8yr? data for Minnesota, that 3 day even 5 day periods of low sun
were common every year, but 7 to 10 days was rare, and longer than 15 days
never occurred (in my data set). A Phd thesis by J.
Thanks for the lead it is Interesting. I noted that it only goes to 500 AHR
and the smallest cell I have is 1,575AHR and biggest is 1,990AHR. I will
call and see if this can be compensated for a larger cell. I have been a
good enough boy at least this year.
Dana Orzel
Great Solar
We still work with 4-5 days autonomy. This matches our storm cycle here in
western CO. If its full they make it through if not the generator backs it
up.
Every bank is a HUP solar one battery bank that I have installed in the last
16 years and is still in service and healthy:
Except for :
1 house
From Snow country in CO this is our formula:
Dig a clean trench with a flat bottom. Allow for height of insulated package
and sufficient back fill so you do not end up with a dead line of grass
across the yard.
Line with 12 mil plastic or heavier, 12 mil poly has a 12,000 year lifespan
Nik,
We cover our insulated copper pipes with the 4 plastic corrugated
drain pipe available at Low's or Home Depot. After the pipe's are insulated we
run this drain pipe from one end to the other. It takes two people, we try to
avoid using 90 degree fittings instead two 45's or use flex
No, Tom I am not sure that I know the difference between bus bars and cable
paralleling.
But I do know that warmer batteries have a lower voltage than cold batteries,
this difference is even greater for sealed than flooded. If one battery has a
higher temperature than another battery that
Darryl,
The process of paralleling through buss bars means attaching each serial
string to a pair of buss bars rather than to neighboring series pairs so
batteries aren't passing current through each other and aren't affected by
each others internal resistance. The buss bars then feed the
I've used the Ilsco Polaris 14 hole Insultaps in the 250 MCM size for a large
system (10 OB VFX3648's two strings of the Rolls 2-KS-33's) battery bank Pos
Neg bus bars. They worked great.
Sincerely,
Chris Worcester
Solar Wind Works
NABCEP Certified PV Installer
Phone: 530-582-4503
Fax:
Vaseline simply is not very good for battery terminals. The melting point is
too low. There are other things that are much better, such as some high
temperature grease, and the silicone grease high temp greases. The silicone
is the most chemical resistant but is a bit expensive.
I clean,apply grease, then apply antiseze to SS bolts and washers, then
assemble. Then I apply grease over the exterior. The Lithium grease sounds
good to me. But why wear gloves?
DArryl
--- On Wed, 12/2/09, wind...@wind-sun.com wind...@wind-sun.com wrote:
From: wind...@wind-sun.com
I wish I understood this bus bar use better. Electrically, these seem to be the
same thing. But by using the bus bar, there has to be more cables, cable ends,
and connection points. And cost.
I just drew a battery bank (see below link to graphic), three series strings in
parallel. On the
I also have been following this thread and wondering whazzup about
buss bars being better than just parallel cables from one battery
string to the next.
Agreed that the parallel cable method is merely using the terminal of
the battery as a connector between two cables. Maybe if there's big
Hi Tump et al.
In the UK, so sorry for slow response.
Must echo your comments. A series string is, without a doubt, the most
efficient and things just get more complicated (connections, numbers of
cells, voltage disparity) as you add parallel strings. Per Tom's
comments, the only solution
Michael:
The bus bar solution has to do at least partially, with:
- Equal resistance paths to each string of batteries (need to keep the
circuit cables the same length).
- Ability to remove (isolate) a string more easily.
With two strings, if the bus bar capacity exists in the hardware of
Yes, I hate Vaseline - it has a melting point of around 105 deg F, so even a
moderatly hot day will cause it to drip all over the place - except onto the
terminals it is supposed to protect.
..
Basically I agree about the low melting point of Vaseline, but I see it as the
canary in the coal mine: your batteries and connections shouldn't be getting
that hot!
Anything over 85 degrees and the cycle life of the battery drops fast.
I switch to grease, when I think I might encounter higher
Problem with bussing in the Flexware, is that the bussbars only go to 1/0.
(be great if they made an attachment like Sq D, that allowed you to bring
bigger cables to their buss.)
Another reason to go to a battery buss instead of cross tying is on complicated
layouts where cross tying won't get
Last I used a PVP was in 2005 and we had multiple failures. I've never had
an SMA fail but there has been a disconcerting glitch on some units lately,
where the inverter displays a GFDI fuse error for about a 1/2 hour after
commissioning, and then kicks in. Still the best dependabilty and fit
Two answers, Jay,
Actually both.
For a lot of systems, we use the ILSCO or POLARIS multi-barrel insulated
mechanical compression device that holds up to 8 or more cables up to
whatever size you purchase them in.
Then, for larger systems, we use standard, 1/4 x 4 copper bus bar with
isolating
Bob Ellison is in Northern New York. I'm in Vermont. We usually have to thaw the
Vaseline over the woodstove. Makes great hair gel too. Don't bother with the
gloves. If we mix in a little maple syrup it sticks wicked.
Dick Ratico
Solarwind Electric
--- You wrote:
Yes, I hate Vaseline - it has a
Dust and dirt get stuck to Vaseline, grease and other sticky substances.
Some particulates contain metal that can form a conductive path from the
battery terminal to the case. Test your battery bucket for leaks by
putting one of your voltmeter lead on the terminal and the other lead on the
Michael,
Here are photos of how it's done in a home situation
http://www.wagonmaker.com/newbatt2.html
What is handy about the buss bar is the ability to use much smaller cable
from each series pair (in this case) to the buss bar, thus less expense in
cables than otherwise and additional
Thanks, Tom. I think I have seen those photos before.
Am I seeing 16 cables hooked up to each bus bar? Are you using 2 cables for
each end of each string? Is that 8 series strings?
I can certainly see the advantage of being able to easily remove a string from
the system.
But I still do not
When a system is installed in the Arizona desert, unless you put in an air
conditioner, you have little choice over the temperature.
..
Northern Arizona Wind Sun - Electricity From The Sun Since
Michael,
There are 12 1/0 cables running from the batteries for each side of the
buss, pos and neg plus the two 4/0 cables. There are 12 series strings in
that 24v system wXH consisting of two 12 volt 100-amphour DCS-100L Dynasty
deep cycle AGM batteries. That system has so far been in
43 matches
Mail list logo
