My first thought is what meter are you using? Some meter will have high
input impedance and give false value
On Tue, Oct 15, 2024 at 1:09 PM rick--- via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Back on the Sol-Ark topic again. We have a customer whose 12kW is
> measuring -195VDC
sounds strange to me. is the service 120 208 meaning 120 to neutral, and
120 to neutral and 208 between phases? meaning you are two legs of a
3-phase? if you are trying to use a single phase 240 volt inverter, be
careful of the inverter wiring. some inverters can not be connected
because you do
Sorry for the confusing reply, Ijust checked with my supplier of speed
drives, it is now allen bradley, he said 15 kW is awfully big reply
On Thu, Jul 25, 2024 at 1:05 PM Darryl Thayer wrote:
> You made me think and that is sometimes not good. Is this 200 v between
> phases? Then a 120-208 th
hi sorry to waste your time. my supplier now Allen Bradley said 15 kW is
awfully big for a speed drive , I am not sure you meant 1.5 kW, that is
about $1000, AND NO Problem with single phase 240 volt input.
On Thu, Jul 25, 2024 at 11:49 AM James Jarvis via RE-wrenches <
re-wrenches@lists.re-wrenc
You made me think and that is sometimes not good. Is this 200 v between
phases? Then a 120-208 three phase output should work fine.
However I am not sure a 15kW inverter will supply the power. I have had
good luck with sol-ark 15 kW powering small motors single phase, but a
speed drive has recti
I think you stated the answer, use a frequency drive, your AC source or
even DC source can charge the capacitors in the drive.
Call your local ABB drive supplier and they will tell you how to set up.
If you need 15 kW I find the drive has to be larger than 15 kW, because
you are supplying with si
I was under impression that white case has a communication and black has
none. Some inverters can communicate some can not with the white case. On
a new project have matched inverter and battery.
On Wed, May 29, 2024, 6:15 AM Jason Szumlanski via RE-wrenches <
re-wrenches@lists.re-wrenches.org>
I had a similar pipe leak. I forgot how I located it, but I used a vaccumn
gauge or pump and to determine how far down the well the the leak was
and pulled the pump and pipe and found a crack.
On Sat, May 25, 2024 at 8:41 PM Bradley Bassett via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrot
I am looking at going high voltage as opposed to 48 volts. This is my
largest battery system, I have a large distance between battery and
inverter, 40 feet, the cost of wire, 50 kW, at 50 volts is 1000 amps. I am
thinking this is too big for me.
On Tue, May 14, 2024, 7:29 PM Mac Lewis via RE-wren
Do you know the transformer impedance?
On Fri, Apr 26, 2024, 5:54 PM Jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Hi all.
>
> Anyone know what the tare loss and efficiency is of a 75 kw transformer?
> And it would be run mostly at 1-10kw max.
>
> This one specifically.
> hamm
Hi Jay I have gotten this type of information directly from Hammond, I
would think from transformer to House line loss should be considered. From
my Experiance, people go to 400 amp services mostly for circuit count. I
have measured a few transformers in past but I don't know where data is
now.
I agree with John also. one of the better-performing off-grid houses I
worked on used a 48 to 12-V Samlex converter. The 12-volt thick-walled
refrigerator was about 4 amps at 12 volts. The lights, radio, and small TV
drew very few amps each/ I also used an Outback 3648 inverter, which the
homeown
If the batteries have a 10-year life, I don't think it would make much
difference. LA batteries show an increase in internal resistance after a
few recharges. Typically, the BMS in a Li battery will ensure at top
balance all cells balance, If the batteries are being properly recharged.
On Tue, A
I have done it many times. YES terminate the secondary first. As an older
CT is a step up the voltage transformer and can generate thousands of
volts. Many of new type Cats are low voltage output and are safe to work
with.
On Fri, Mar 8, 2024, 10:46 AM Jerry Shafer via RE-wrenches <
re-wrenches@
I used to be Lead AGM for Off-grid; I used the Pure Lead Thin Plate for an
install 4 years ago from AltE, and it is still working fine. I believe the
LiFe is the battery for off-grid and the trick is to find the correct BMS,
On Sat, Feb 17, 2024 at 11:43 AM Drake Chamberlin via RE-wrenches <
re-w
Is it similar to my problem with my Simplify batteries? Over time, the BMS
did not allow all cells to charge the same. To correct this, I had to
charge each battery separately, and after this, they stayed equivalent for
more years.
On Thu, Feb 15, 2024 at 7:50 AM Jay via RE-wrenches <
re-wrenches@
Advice, please; I was about to purchase a SunPower inverter. Have other
people been having problems?
I cannot reach their support line with my questions. As many of you know, I
am a small contractor. I have noticed a reluctance of solar equipment
suppliers, both Outback and Sol-Ark, who have recent
About 4 years ago I wrote about my failure of Simplify in service 3 years.
after much delay, I took each unit to shop and charged each one on bench
power supply, all returned to full function and are still working today off
grid system. I agree with the comments they are tricky, MorningStar knows
I had a some way similar experience I used fire raptor and added a relay to
use Raptor signal to shutdown inverter.
On Mon, Jan 1, 2024, 2:01 PM Mac Lewis via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Hello Wrenches,
>
> I need to retrofit a Schneider XW+ system with a rapid shutd
Great site, Allan, but many facts still need to be included. Was there a
discharge or charge going on? How much power was being drawn by the
heaters? If this is for a standalone system, energy consumption is very
important. What is the lower temperature cell discharge limit of Blue
Planet? What
You have had many good suggestions but note you are on border line power,
at 2200 teet your power is down 10% note gen's are 80% of name plate, and
you are asking for 7.2 kW from a Genny that with atmospheric correction is
7.2 kW
On Fri, Oct 27, 2023, 8:27 AM Amos Post via RE-wrenches <
re-wrenche
I have off grid customers where I have them install 1/2 HP pump, also
Franklin soft start seems to help, low cost but I do not know how it works,
it has a start capacitor I think.
On Wed, Oct 11, 2023, 1:23 PM James Jarvis via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> On Wed, Oct
Generators are load responsive. They can not be back feed, one approach is
to take heavy loads and have the inverter drop these loading heav load
situations. bring these loads on line with a PLC
On Mon, Sep 25, 2023 at 11:22 AM Chris Daum via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrot
sorry for a dumb question but what is the voltage ranges of the Franklin?
On Thu, Sep 14, 2023 at 4:26 PM Jason Szumlanski via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Enphase does generator support as well. Fortunately, I do not need that,
> so maybe it opens up my options. It's
gt;> *Dave Angelini Offgrid Solar
>> "we go where powerlines don't"
>><http://members.sti.net/offgridsolar/>https://offgridsolar1.com/
>> <https://offgridsolar1.com/> <http://members.sti.net/offgridsolar/>
>> e-mail offgridso...@st
New washing machines are small loads 400 Watts about.
On Fri, Sep 8, 2023, 2:27 PM Darryl Thayer wrote:
> I once used a ferro-resonant transformer to clean up a sine wave. You
> have to know the power.
>
> On Fri, Sep 8, 2023, 1:59 PM Chris Daum via RE-wrenches <
> re-wrenches@lists.re-wrenches
I once used a ferro-resonant transformer to clean up a sine wave. You have
to know the power.
On Fri, Sep 8, 2023, 1:59 PM Chris Daum via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Hi folks:
>
>
>
> I have a fellow with a Trace SW5548, purchased from us in 2001. It’s
> been worki
I agree wit most of the comments. I have tested many VAWT none were any
good.
i had presented my study at the MIdwest Energy Fair, showing much higher
trust on the turbine's and much lower
performance. I just wanted to let you know that sume no performance at
all.
On Fri, Aug 18, 2023 at 10:52
I need clarification; however, here is my interpretation for you.
The utility feeds the meter and then the 100A breaker.
Then you want this 100A breaker to feed the 220A bus panel.
This 220A panel then supplies through a 100A breaker the house load.
The solar also feeds the 220A panel. If the sola
I have seen such equipment from generator suppliers, they will be reversing
contactors, Look for reversing disconnecting switches I have used them
from SQ D and Eaton, and GE.
On Wed, Jul 26, 2023 at 5:26 PM Mick Abraham via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Hi, Mechanix~
How about a Morningstar relay driver? I have not done this exact thing
before.but similar things.
On Thu, Jul 20, 2023 at 4:05 PM jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> HI All,
>
> I wanted to revisit this thread for one reason.
>
> If you turn off the inverter at the
t;
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Darryl Thayer via RE-wrenches
> *Sent:* Wednesday, July 19, 2023 12:17 PM
> *To:* newrewrenches
> *Cc:* Darryl Thayer
>
Customer wants me to propose adding solar modules to north roof. I don't
know how to get answer from PV Watts?
___
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I have one of four one alarm locked no tech support
On Fri, Jul 14, 2023, 2:11 PM Darryl Thayer wrote:
> Yes the pytes are good price, I had problems and no tech support
>
> On Fri, Jul 14, 2023, 1:51 PM Andrew Perkins via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Jay we hav
Hi you have the correct people on the job but get at the basics the forces
causing the vibration is magnetic. You have to break the magnetic path. If
it was electrical a simple cut in the enclosure. But it is magnetic which
is much harder to stop. If the hum stops with the cover off replace the
c
check with Iron Ridge as they have done for me
On Fri, Jun 30, 2023 at 4:15 PM Bruce Erickson via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Hi California guys,
>
> We have a couple of leads that are manufactured homes, that have to be
> permitted through the CA Housing and Communi
Hi David I think although it is 450 volts out, the battery is actually moch
lower voltage and has a buck boost charge controller. It bucks the voltage
down to charge the battery and boost the voltage to serve the load. If you
open the battery and rewire you will need a BMS, you can find on line bu
Are we all thinking single phase? Another idea would be to use plastic
enclosures in at least some way to break the magnetic path. This is a lot
of current, and it will cause magnetic heating where the magnetic loop is
complete.
On Thu, Jun 29, 2023 at 10:19 AM Kirk Herander via RE-wrenches <
re-
Hi all, just a few comments, The inverter charger has a ripple on the DC.
All have this; Outback is no exception.
However, all wires should be run together, positive and negative
same conduit and same hole, as the AC ripple magnetic effects cancel
from both wires. Also, the circuit breaker has an
I have had similar problems with other equipment. fully the battery to top
balance and then reset the SOC
On Thu, Jun 29, 2023 at 7:04 AM Jeremy Rodriguez via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> We have about 20 units out in service.
> All of the batteries SOC readings have
Hi Jay and all, I belive Steve meant C/2 or C/3; just a typo. My oldest
set of LiFe is almost 10 years? It has a fastest charge rate of C/0.2
because the 10 kWh is charged by 1.6 kW solar. These batteries are doing
fine. I do not have a way of measuring the current capacity but
On Mon, Jun 26,
Hi Jay, Larry says is correct. My experience, with cells and there BMS is
they need to get up to top balance voltage then the BMS will stop charging
the full cells and bring the remainder of cells up to fill charge. My
oldest set is about 6 years old, since I understood they have been fine
On Mo
e in the future.
> Good Luck,
> Howie
> Sun Catcher
> 802-272-0004
>
>
>
> On Sat, Jun 3, 2023 at 1:08 PM Darryl Thayer via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> I have a Pytee battery that has gone into alarm. Won't come out.
I have a Pytee battery that has gone into alarm. Won't come out.
Pytee says to connect the computer and diagnose. That is all they said.
They do not answer emails asking for further advice. Does anyone know
what to do? Sps to use? Address to use?
__
Hello, just an onion of an old person. I have needed a lot of tech help, I
find Sol-Ark the best tech, So I would go with experiance.
On Thu, Jun 1, 2023 at 11:19 AM Kirk Herander via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Hello All,
>
> I am sizing my first Fortress system, 1
Was the inverter connected at the time of testing? If so I suspect the
inverter is loading the solar array below Vmp
On Wed, May 17, 2023 at 11:23 PM frenergy via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Wrenches,
>
> I've got a call from a customer that said their
Hi Jay, if this is the LA AGM thin plate, I tried to look into this a few
years ago. Being AGM, they have a recombination feature; when overcharged,
they recombine the H2 O2, thus self-balancing, just like the top balance in
LiFe. The caution is not to charge too fast in absorb mode. I decided n
I have used Egauge in this situation many times. They even have
revenue-grade Current Transformers.(CTs)
Their tech support is good, I find even I can set them up easily. They
use normal English in their documentation.
On Thu, May 11, 2023 at 3:21 PM Larry Brown via RE-wrenches <
re-wrenches@li
Sorry if this is nonsense, but your existing Radian is your "AC grid
source," It can act as the paralleling.
AC coupling source. I did this about 20 to 30 years ago, using FX
inverters, not Radians, to power a large motor.
Can your Radian Mate 3 run in grid zero? Or if not, one inverter runs all
I am in Minnesota utility is Xcel energy
On Tue, May 2, 2023 at 9:12 PM Jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Which utility has such low rates?
>
> SMUD?
>
> Jay
>
>
>
> On May 2, 2023, at 12:05 PM, Darryl Thayer via RE-wrenches <
Hello, I apologize for perhaps a dumb question. I did go online to
ask Outback twice, no answer.System Radian 8 kW and Mate3 with 2 each
1.5 kW solar arrays into 2 ea. MX60s. Battery 20 kWh LiFe open loop. The
owner wants the lowest energy bill. The rates are; off-peak at 0.04/kWh
and on-pe
Hi all, if the micros are not producing power I would expect an extremely
low power factor. The power factor of all inverters is low not in use.
Make sure electrician is measuring during production. My measurements are
extra low for micro inverters.
On Thu, Apr 27, 2023, 4:11 PM August Goers via
This power factor is impossible, can he measure the apparent power then
the real power separately devide the real by apparent to get power factor.
I guess he has connections wrong, wrong leg of split phase. If the
inverter is off, then possible, do you measure current off the inverter and
DC into
Hello, I have had similar serious problems when working with old
batteries. Their voltage rises rapidly when charging. The older
batteries will lose in capacity and more so charging rate. Have the
batteries been equalized periodically? If not, they will develop sulfur on
the plates. The solutio
It depends upon the pulse. It you are referring to a an EMP caused by a
solar storm this is hard on large electrical grids. No problem on Solar
equipment. The voltage current is Ndf/dt number of turns times rate of
change of flux, the grid can collapse but if you disconnect from grid
(multimode
Hello the answer is yes. On a job several years ago to finish I worked
after dark. It was a full moon, and a street light was nearby I got bit
from a 500 Voc module string. I am sure I did not have 500 V but it only
takes 20 ma. To be deadly. I did not get my volt ohm meter out but I should
hav
Hello i have an XW Pro that starts a 2 HP induction motor reliably, i
noticed th scope indicates battery voltage current issue, be sure your
batteries can supply the starting surge. I recently installed a new set of
batteries. Some not all Li can surge.
On Sat, Jan 14, 2023, 5:13 PM bob--- via
n avoided an $8k invoice
> from the utility. The utility was not transparent about this option at
> first and only made it clear after some persistence.
>
>
>
> Good luck,
>
>
>
> Garrison Riegel
>
> Celestar Solar
>
>
>
> On Dec 25, 2022, at 3:14 PM, Dar
It is common practice for the utility to overload the transformer a lot for
the potential load. They expect no one will use their service at maximum,
furthermore, they expect non coincidence of loads. Look at the transformer
most have a label as to the kW or the unit, and the utility should give
Assuming this is a zero instantaneous no export, not on the daily or
monthly. I have installed a few XW, and XW PRO inverters, however, I have
never done an instantaneous no export project on the entire service. The
problem is the load. Ideally you want to monitor the service entrance and
contr
Hi, happy holidays to all. Of course it sounds like a dual bonding
situation. Inverter generators are normally floating neutral, rotating
generators are normally neutral bonded internally in the generator. The
GFCI detects a neutral current on the ground wire. If the generator is
bonded interna
Hi all, not enough information.
Does her grid allow export?
Does she have a period of poor sun?
What is her daily or monthly consumption?
Is there an AC or DC limit on connected solar power?
Will her AHJ or Utility allow line side tap?
The system seems to be poorly designed. Power Walls are AC c
Hello and happy holidays. About 10 years ago, I had a similar problem with
a similar customer who wanted a similar problem solved. The Generac auto
transfer switch needed a 12 volt source. When the grid went down the
generac transfer switch disconnected and waited about 10 to 15 seconds then
sta
Hi Chris, this a Darryl kluge approach. Get a 50 Hz battery charger, a
LiFePO battery. And a off grid inverter. 20 kW is tough, maybe a 15 kW
inverter woild surfice. The battery plus battery chsrger should be sized
to handle 300 amps 48 volts. 15 kW / 50 volts= 300 A.
If the battery can handle 2
Hello, breakers are thermal-magnetic the current heats the breaker; if the
current is high enough for long enough, a solder pot inside melts; this
current and excessive heat causes other breakers to open Are you sure the
string current is less than 80% of the breaker rating and the wire
connecting
I want to comment, maybe without value. The breaker you mention is called
a "shunt trip" breaker. This is common type breaker in the electrical
industry. The MN breaker has a 24 volt solenoid that trips the breaker.
Shunt Trip breakers have the solenoid voltage for the system voltage. BUT
the w
Yes but how do you trigger fire raptor except by the fire raptor switch?
It will take care of by manual control but what about 690.11?
On Tue, Apr 19, 2022, 5:06 PM Jerry Shafer via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> You may want to look at fire raptor as a RSD option.
> Je
I understand the complete Tigo line and any sun-spec MLPE will work,
however, it also requires the RSD box from Schneider I don't have
experience with any other than the firestop tigo
On Tue, Apr 19, 2022 at 11:42 AM jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> HI All
>
> I
don't think there is a
> real safety issue here, but I also don't see how the NEC allows the
> conductor to be sized for anything less than 200A.
>
> Jason
>
>
> On Sun, Apr 17, 2022, 11:29 AM Darryl Thayer via RE-wrenches <
> re-wrenches@lists.re-wrenches.
r
>
> Peter T. Parrish, Ph.D.
> President, California Solar Engineering
> 1107 Fair Oaks Blvd Ste. 351
> South Pasadena, CA 91030
> (323) 839-6108
>
> On 04/16/2022 3:59 PM Darryl Thayer via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>
> yes, t
ident, California Solar Engineering
>> 1107 Fair Oaks Blvd Ste. 351
>> South Pasadena, CA 91030
>> (323) 839-6108
>>
>> On 04/16/2022 3:59 PM Darryl Thayer via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>>
>>
>> yes, there are t
in an
>> off-grid scenario with a generator and smart load, we would now need to
>> integrate an AC disconnect for generator input (grid) and either a fused
>> disconnect or loads panel for any smart load output. With the 12K unit, the
>> integrated breakers help cut down on BOS
yes, there are three versions of the cybo inverter, the one that I a most
familiar with produced a 60 HZ AC signal; the voltage did not exceed 120
volts or 240 volts. The voltage out times the current out was equal to the
voltage in times current in. This allowed me to operate a resistance load,
Hello, The overcurrent device is to protect the conductors. you can put
any size wire, but you must protect with the overcurrent device. REmember
in solar equipment; you may have more than one supply source. The DC best
example is solar modules connected in parallel, on
On Fri, Apr 15, 202
Hi, Ron, Yes, you must be careful of the MPPT inputs. You state Sol-Ark
has an 18 amp max input, meaning you can not have more than 1 string
supplying an MPPT if your 60 cell modules are 10 amps Isc. You state
Sol-Ark has a maximum voltage per MPPT of 500 volts, this voltage is *not
Voc x number
Subject:* Re: [RE-wrenches] Water Pumping 24/7
>
>
>
> Hi Darryl,
>
> I’d love to see that math on that.you mind sharing?
>
> -Wes
>
> 303-653-3073
>
>
>
>
>
> On Mar 27, 2022, at 1:27 PM, Darryl Thayer via RE-wrenches <
> re-wrenches@lists.re-w
Hello, Sorry to be so late but I have been overloaded. Just a note on
physics of lifting water. The calculation indicates if you pump 1 gallon
per minute up 300 feet it required a water hp of 5 HP
Use this base number and good pumps are about 70% efficient. If the flow
rate is not 1 GPM adjust t
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