Re: [RE-wrenches] Testing AGMs

2018-02-24 Thread Ray 
I agree, I usually steer full time off grid customers away from AGM, but 
for remote sites that might not be attended for months at a time, AGMs 
do have a purpose.  We've had good luck with Full River. Load testing is 
one really long way to test; I usually just have the customer do load 
testing with the system and the Trimetric or other SOC meter.  Run a 
good charge cycle, then turn off the solar for a couple of days, and see 
what kind of capacity is left.  Also always good to check voltages of 
all the batteries, and see if there are weak or dead cells.  Dead cells 
show up pretty easily, they will test 1.5 to 2 volts lower.


My latest toy purchase was a FLIR camera, it has been extremely 
helpful.  You can literally see the dead cells within the packs. They 
show up noticeably warmer than surrounding cells.  If you see anything 
like that, you know the pack is probably toast.  Finally, a really good 
test is how old they are.  If they are rated at 300 cycles to 80% DOD 
battery and they are 5 years old, they're probably gone as well.  Most 
AGMs do not have long cycle lives. Folks don't call to complain about 
batteries unless they're not working right.  I listen to my customers; 
they know better than anyone when the system isn't working the same, and 
after checking for new loads, and proper charge settings, its almost 
always batteries.


Ray

Remote Solar



On 2/24/18 5:20 PM, Dave Angelini Offgrid Solar wrote:

Load test and compare with another known good battery. I also steer away
from AGM's.  --Dave

Wrenches,
We have a client with a string of sealed L16s and he believes he may have
a weak or failed cell.

What’s the best way to test or check these batteries, since there is no
electrolyte to draw out.

We don’t install many AGMs, in fact, steer the client away from them,
usually.




Jeremy Rodriguez
Solar Installation And
Design Expert
All Solar, Inc.
1463 M St
Penrose Colorado 81240

Sent by Jeremy's iPhone. Sorry for typos and shorthand!
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Re: [RE-wrenches] Testing AGMs

2018-02-24 Thread Dave Angelini Offgrid Solar 
Load test and compare with another known good battery. I also steer away
from AGM's.  --Dave
> Wrenches,
> We have a client with a string of sealed L16s and he believes he may have
> a weak or failed cell.
>
> What’s the best way to test or check these batteries, since there is no
> electrolyte to draw out.
>
> We don’t install many AGMs, in fact, steer the client away from them,
> usually.
>
>
>
>
> Jeremy Rodriguez
> Solar Installation And
> Design Expert
> All Solar, Inc.
> 1463 M St
> Penrose Colorado 81240
>
> Sent by Jeremy's iPhone. Sorry for typos and shorthand!
> ___
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Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail  offgridso...@sti.net
text 209 813 0060

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[RE-wrenches] Testing AGMs

2018-02-24 Thread Jeremy Rodriguez 
Wrenches,
We have a client with a string of sealed L16s and he believes he may have a 
weak or failed cell.

What’s the best way to test or check these batteries, since there is no 
electrolyte to draw out.

We don’t install many AGMs, in fact, steer the client away from them, usually.




Jeremy Rodriguez
Solar Installation And
Design Expert
All Solar, Inc.
1463 M St
Penrose Colorado 81240

Sent by Jeremy's iPhone. Sorry for typos and shorthand!
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Re: [RE-wrenches] Radian throughput power

2018-02-24 Thread Lones Tuss 
Hello Lones here.
 When an ac source is accepted by the inverter. The rely connects the ac input 
directly to the ac output. The relay is (should be) protected by a 50 amp 
breaker
If there is an ac load of 8KW or 33 ac amps the remaining current is available 
to be used by the inverter for battery charging. If the load increases above 8k 
charging is reduced to honor the loads first. If the loads chew up all 50 amps 
charging will be reduced to zero. Above 50 and the breaker should trip or 
damage to the relay may result.
 It is possible to use Support Mode. This sets a limit on the amount of current 
passing through from the source to the loads. Any amount above the set point 
will be supplied from the batteries. If the ac input current is set to 25 ac 
amps. Any load above the 25 amps will come from the batteries. Sustained loads 
above this adjustable set point could possibly deplete the batteries. If the 
load drops below the 25amp charging will resume.
It is possible have an ac source and deplete the batteries.
Loads first Charging 2nd.
I hope this helps.
Take Care All

-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of Dave Angelini Offgrid Solar
Sent: Saturday, February 24, 2018 9:16 AM
To: RE-wrenches 
Subject: Re: [RE-wrenches] Radian throughput power

You are missing the charging of the battery! That is where (your numbers) the 
12KW - 8KW can go!


Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail  offgridso...@sti.net
text 209 813 0060

> Wrenches,
>
>              I spoke with tech support at Outback recently 
> and was told the max output of the Radian at the output terminals is 
> 8KW, even if there is an external AC source connected to one of the AC 
> IN terminals of the Radian.
>
>              However, on page 18 of the GS8048 manual:  
> "When it (transfer relay) closes the L1 input and output terminals 
> become electrically common."  ...same for L2 input and output. then, 
> "the relay contacts are limited to 55 amps per phase or leg".  Since 
> there is no 55 amp circuit breaker to protect that relay a 50 amp 2 
> pole breaker would be used.  This means you would have 50A X 240 Vac 
> (12KW) at the output terminals, correct?
>
>              Am I missing something?  Thanks,
>
> Bill
>
> Feather River Solar Electric
> Bill Battagin, Owner
> 4291 Nelson St.
> Taylorsville, CA 95983
> 530.284.7849
> CA Lic 874049
> www.frenergy.net
>
>
> ---
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Dave Angelini Offgrid Solar
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http://members.sti.net/offgridsolar/
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text 209 813 0060

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Re: [RE-wrenches] Radian throughput power

2018-02-24 Thread Dave Angelini Offgrid Solar 
You are missing the charging of the battery! That is where (your numbers)
the 12KW - 8KW can go!


Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail  offgridso...@sti.net
text 209 813 0060

> Wrenches,
>
>              I spoke with tech support at Outback recently and
> was told
> the max output of the Radian at the output terminals is 8KW, even if
> there is an external AC source connected to one of the AC IN terminals
> of the Radian.
>
>              However, on page 18 of the GS8048 manual:  "When it
> (transfer relay) closes the L1 input and output terminals become
> electrically common."  ...same for L2 input and output. then, "the relay
> contacts are limited to 55 amps per phase or leg".  Since there is no 55
> amp circuit breaker to protect that relay a 50 amp 2 pole breaker would
> be used.  This means you would have 50A X 240 Vac (12KW) at the output
> terminals, correct?
>
>              Am I missing something?  Thanks,
>
> Bill
>
> Feather River Solar Electric
> Bill Battagin, Owner
> 4291 Nelson St.
> Taylorsville, CA 95983
> 530.284.7849
> CA Lic 874049
> www.frenergy.net
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
>
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Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail  offgridso...@sti.net
text 209 813 0060

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[RE-wrenches] Radian throughput power

2018-02-24 Thread frenergy 

Wrenches,

            I spoke with tech support at Outback recently and was told 
the max output of the Radian at the output terminals is 8KW, even if 
there is an external AC source connected to one of the AC IN terminals 
of the Radian.


            However, on page 18 of the GS8048 manual:  "When it 
(transfer relay) closes the L1 input and output terminals become 
electrically common."  ...same for L2 input and output. then, "the relay 
contacts are limited to 55 amps per phase or leg".  Since there is no 55 
amp circuit breaker to protect that relay a 50 amp 2 pole breaker would 
be used.  This means you would have 50A X 240 Vac (12KW) at the output 
terminals, correct?


            Am I missing something?  Thanks,

Bill

Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
www.frenergy.net


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