Hey wrenches,
Does anyone have any advice for troubleshooting Aquion batteries? This
particular stack is an Aspen 48M-25.9. They are losing power on a nightly
basis. I'm not seeing much technical literature out there and I'm not
familiar with these batteries.
Are there any common failures? How
- Original message------
> *From: *Mac Lewis
> *Date: *Thu, Jul 22, 2021 9:01 PM
> *To: *RE-wrenches;
> *Cc: *
> *Subject:*[RE-wrenches] Cost effective 4 pole HV disconnect
>
> Hi Wrenches,
>
> What's the most cost effective way to disconnect 4 poles of 600Vdc? Need
>
Hi Wrenches,
What's the most cost effective way to disconnect 4 poles of 600Vdc? Need
to do 2 strings, both + & -. Preferably fusible. This comes up a lot in
our designs
Thanks in advance for your thoughts
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*"Yo solo sé que no sé nada.&q
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The "R" inverters have had a persistent issue that the list discussed
recently. You get an error "inverter firmware mismatch". This results in
losing a phase and then can be cleared by power cycling the Mate 3s and
will work ok for a while and then repeat. The latest firmware for the
Mate3s
wo list archives for searching. When one doesn't work, try the
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_
Do you have a flexnet DC? I believe that is the master voltage indicator
that's displayed on the mate. There is an adjustment potentiometer for that
in the flexnet. Search for flexnet DC calibration and you will see a
document from outback for that.
This can make a huge difference for accurate
I would look closely at Growatt.
One thing easy to overlook, with 48V batteries especially, is how
difficult it is to have BOS components that are UL listed on the DC side.
This is an advantage of the cluster topology as opposed to a central
inverter topology. There are some good custom options
quot; *
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> *P* Please consider the environment before printing this email.
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> *From:* RE-wrenches *On
> Behalf Of *Mac Lewis
> *Sent:* Monday, April 12, 2021 5:24 PM
> *To:* RE-wrenches
> *Subject:* [RE-wrenches] PV direct EV charging
>
>
>
Hey wrenches,
Are there any purpose built inverters designed to charge an EV, PV direct
without batteries?
Thanks in advance
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We have seen this issue repeatedly as well with FXR stacked inverters.
Changing cables, scrubbing the firmware etc will buy time but never fully
fixes the issues. It will crop up again at some future date. My general
sense is that errors accumulate over time and make these systems unstable.
I too
Hey wrenches,
Is anyone familiar with a solid Lithium solution that could be reconfigured
in the field from 24V to 48V in the future? Probably in the neighborhood
of 20 kWh.
Thanks
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Mac Lewis
*"Yo solo sé que no sé nada." -Sócrates*
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installation.
Thanks!
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Hi Wrenches,
Has anyone paired the Discover batteries with Xanbus lynk card with an
older XW system (not XW+ or XW Pro)? If so, did the Xanbus comm work OK
with the Discover batteries?
Thanks
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Mac Lewis
*"Yo solo sé que no sé nada."
some parts of the load and that is a
> nice feature, but to protect the batteries, why isn't BPM enough?
>
> Jason
>
>
>
>
> On Tue, Jan 19, 2021 at 8:48 PM Mac Lewis wrote:
>
>> Hi Jason,
>>
>> I have done this with mercury displacement relays:
>>
>&g
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in batteries, BMS & systems listed to UL 1973
& UL 9540
Thanks in advance
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-Ark but they
don't comply with the IEEE 1547-2018 quite yet. I'm open to suggestions.
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to
contradict Solaredge documentation.
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What version Hub?
On Tue, Apr 28, 2020, 9:55 AM Jerry Shafer wrote:
> You may have a stacking error, l would verify that first
> Jerry
>
> On Tue, Apr 28, 2020, 8:11 AM Chris Schaefer
> wrote:
>
>> G'Day All,
>>
>> Recently ran into an issue on a system installed by others. It's an
>> Outback
s are balanced and the load is shared between 240-Volt
> conductors. Based on my customers' experiences I would use AGM LA
> batteries, as I expect low usage of the battery and quick recharge, but
> that is the customer's choice. I had one customer that had 10 years on the
> float-A
;
>
> On Apr 17, 2020, at 7:08 AM, Glenn Burt wrote:
>
>
> How about a transformer at each end?
> Step up the voltage.
>
> -Glenn
> Sent from my 'smart'phone, so please excuse typos and spelling errors.
>
> -- Original message--
> *From: *Mac
rectifiers with wide
input voltage window?
Thanks in advance for your help
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*"Yo solo sé que no sé nada." -Sócrates*
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>
> I must say Outback has been very available to us as we try to figure these
> problems out. I am fortunate that I am working with a senior engineer. We
> are both currently stumped, but we are going to consult again tomorrow and
> see if any other ideas come to us.
>
&g
are both currently stumped, but we are going to consult again tomorrow and
> see if any other ideas come to us.
>
>
>
> Thanks everyone for the input. More soon.
>
>
>
> William Miller
>
>
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.r
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anything
on a quick search.
Thanks
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Hey wrenches,
What are you using for Lithium in the 100 kWh-200 kWh range? At what bank
voltage? With what inverters?
We are getting more and more inquiries in that range.
Thanks!
--
Mac Lewis
*"Yo solo sé que no sé nada." -Sócrates*
__
ER level access.
> For simplicity I gave them the same password. Prior to that I had not gone
> into that screen and just had accepted the ADMIN level as the only level.
>
> OR
>
> 2. I came home from that day to the thread that others were having the
> same problem (Mac Lewi
ines don't"
> http://members.sti.net/offgridsolar/ <http://members.sti.net/offgridsolar/>
> e-mail offgridso...@sti.net
> text 209 813 0060*
>
> On Fri, 31 Jan 2020 07:10:29 -0700, Mac Lewis wrote:
>
> Hi Wrenches,
>
> I am working with Schneider on this but I haven'
e. Cables are
testing fine. No other device seems to have these issues. All of these
cables are factory made.
Maybe there is another explanation for the AGS defaulting to "Off".
Thanks in advance for your help
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Mac Lewis
*"Yo solo sé q
into the site.
Thanks
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;
> https://www.electricianinformationresource.com/dc-circuit-breakers.html?fbclid=IwAR0iQzT58cgAbBEcbtg2N_ETDV5qkC31Qz7_py83pgaoLm_l0ZPGNAmN2KQ
>
> Benn Kilburn
> SkyFire Energy
> 780-906-7807
>
> On Jan 14, 2020, at 7:03 PM, Mac Lewis wrote:
>
> Hi wrenches,
>
> I've got an off grid cu
after we had left.
I'll report back on what I find out.
Thanks
On Wed, Jan 15, 2020 at 12:49 AM Jay wrote:
> Would be interesting to see if it happens if they are using the generator.
>
> Jay
> Peltz power.
>
>
> > On Jan 14, 2020, at 6:04 PM, Mac Lewis wrote:
&
Hi wrenches,
I've got an off grid customer that has an external PV GFI breaker in his
charge controller that trips when the dryer is on. He snuck in an electric
dryer uggh
However, I am curious what the mechanism might be to cause the trip. Will a
ground fault on the AC side of an inverter trip
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>
> On Mon, 2 Dec 2019 07:28:29 -0700, Mac Lewis wrote:
>
> Hi Wrenches,
>
> Does anyone know of a non-sensor based tracker controller that can work
> with a variety of tracker motors?
>
> We don't do trackers much but we have a WattSun
there are high snowy peaks that confuse the
tracker I guess.
It seems like something would be out there that would just use the sun
position equation instead of sensors that can be confused.
Thanks for your input
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*"Yo solo sé que no sé nada."
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> List rules &
as well) onto the
AC buss to help stabilize AC voltage and frequency during these events. It
seems like the new smart inverters can do this but I have no experience
with this. Maybe the Sunny Island?
Im just starting to research this but I always appreciate your input.
Thanks
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Mac Lewis
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-Glenn
> Sent from my 'smart'phone, so please excuse typos and spelling errors.
>
> -- Original message--
> *From: *Mac Lewis
> *Date: *Sat, Aug 3, 2019 5:35 PM
> *To: *RE-wrenches;
> *Cc: *
> *Subject:*[RE-wrenches] Pass-through state Dual FXR system
>
> Hi Wren
s off with the generator.
Any ideas what I might be missing?
Thanks for your suggestions
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-line in case that 25 kW limit is
reached. Is there anything off-the-shelf that can do that?
Thanks in advance
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direct, ideally with a 60 cell panel with an LCB if necessary.
This client is aging and tired of servicing this submersible during Spring
run-off.
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William,
We have experienced this same issue on various Outback systems, mainly on
multi-stack fxr systems. I can't say I know or understand why this
happens. To me, it makes sense that it's a communication error of some
kind. What I've done with success:
1. Update all firmware, Mate, devices
Hi Chris,
I don't think you'll have an issue but you may be clipping for a more
substantial part of the day than a fixed mount. Depends on the module
selection.
Thanks
On Thu, May 30, 2019, 11:39 AM Christopher Warfel <
cwar...@entech-engineering.com> wrote:
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for batteries? Any warranty
considerations that you have ran into?
Thanks!
--
Mac Lewis
*"Yo solo sé que no sé nada." -Sócrates*
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ation. Has
> cell voltage been compared for non-uniformity? Has the equalization charge
> been performed?
>
> I am not a fan of the unusual low voltages that Outback prescribes for
> EnergyCells and seriously wonder how these voltages can properly maintain
> these cells. CV is below t
ng does it take to get absorb volts
>
> Thx
> Jay
>
>
>
>
>
> On Apr 20, 2019, at 6:18 AM, Mac Lewis wrote:
>
> Thanks for all of the comments. My big question is *do these batteries
> operate at lower voltages than a standard lead battery*. From what I'm
> gathe
ind/repair you would
>>> have checked.
>>>
>>>
>>>
>>> Saying the battery easily charges to 100% worries me as sulfated
>>> batteries do that. Healthy LA batteries take many hours to reach full
>>> saturation. Has cell voltage been com
ne LLC
> 631-514-4166
> www.windsine.org
>
>
>
>
>
> On Fri, Apr 19, 2019 at 12:27 PM Mac Lewis wrote:
>
>> Hello Wrenches,
>>
>> We recently inherited an Outback system that I've been keeping an eye on
>> via Optics. Its a dual stack 3648 VFXR, with a
as always for your expertise
--
Mac Lewis
*"Yo solo sé que no sé nada." -Sócrates*
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house backup, and
critical load panel isn't possible. This may be common, I just haven't
done it.
Thanks in advance
--
Mac Lewis
*"Yo solo sé que no sé nada." -Sócrates*
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tcher
>
> On Thu, Feb 28, 2019 at 6:54 PM Mac Lewis wrote:
>
>> Hi Laura,
>>
>> First thing I would try is to update the firmware. Eeprom is a type of
>> memory so maybe you have a bad board but I have remedied this error with a
>> firmware update.
>>
gt; www.re-wrenches.org/etiquette.htm
>
> Check out or update participant bios:
> www.members.re-wrenches.org
>
>
--
Mac Lewis
*"Yo solo sé que no sé nada." -Sócrates*
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list. I would strongly concur w/ Bradly w/ his suggesting
> you utilize the dc coupling. Tump
>
> On Feb 18, 2019, at 8:19 AM, Mac Lewis wrote:
>
> Hello Wrenches,,
>
> We have been asked to take an SMA Sunny Island System that is off-grid,
> and convert it to a backup system (
n SMA device. That might be helpful to coordinate
> MPPT and grid tie.
>
> Brad
>
> On Mon, Feb 18, 2019 at 5:19 AM Mac Lewis wrote:
>
>> Hello Wrenches,,
>>
>> We have been asked to take an SMA Sunny Island System that is off-grid,
>> and convert it to
of inverters that would work for this.
Thanks for your assistance
--
Mac Lewis
*"Yo solo sé que no sé nada." -Sócrates*
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which SMA GT inverters communication with the SI?
>
> thx
>
> jay
>
>
>
> On Jan 8, 2019, at 1:02 PM, Mac Lewis wrote:
>
> Hi August,
>
> The limitation with the Sunny Island, (if you don't go 3 phase), is a quad
> stack of 6048s in a 120/240 system last I che
Hi August,
The limitation with the Sunny Island, (if you don't go 3 phase), is a quad
stack of 6048s in a 120/240 system last I checked. I think you can double
that with your islanded Sunny Boys. The 6048 had a ridiculously high surge
rating so it can cover pretty high loads.
If you go 3 phase
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