System Upgrade questions...[resolved]

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mexsudo
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Posts: 140
Joined: Wed Mar 13, 2019 7:40 pm
My RE system: 8 290 watt panels: Canadian Solar CS3K-290P
8 AGM 12v 115Ah batteries: Duravolt DGG115-2 (48 volt)
Inverter: Outback VFXR3648A, 3600VA
Charge Controller: Outback FLEXmax 60, FM60-150VDC
System Display and Controller: Outback MATE3s
===
4 370watt panels Axitec AXIPREMIUM
APSystems QS1A 1500W micro inverter
APSystems ECU-R
Location: Ensenada, Baja California, Mexico

System Upgrade questions...[resolved]

Post by mexsudo »

long story, short version:

existing equipment July 14, 2020:

Canadian Solar: 8 290 watt CS3K-290P panels
--4 strings of 2 panels
Duravolt batteries: 8 AGM 12v 115Ah DGG115-2
2 banks of 4 batteries, 48 volt
Outback VFXR3648A 3600VA Inverter
Outback FLEXmax 60 FM60-150VDC Charge Controller
Outback MATE3s System Display and Controller
Outback HUB 10.3

===
fcwlp from this forum has spent copious time assisting me via PM.
He helped me work thru several settings issues successfully. The system is now working very well.
He suggested adding 1 panel and wire the array as 3 strings of 3 panels to increase my PV harvest. He is unable to come here to do the work.

see his some of his comments and rational below.

"I have also noticed that you have 8 panels, likely wired in 4 strings of 2 panels resulting in array voltages in the mid 60s to low 70 volt range. As temperatures get hotter these voltages will drop, which may result in a poor PV harvest. The problem is with is called the IV (current - voltage) curve of the panels. You want to be operating on the flat portion of this curve versus the steep portion where there is a dramatic difference in power output.
-
Is there a possibility of adding one more panel? This would allow wiring the array as 3 strings of 3 panels which will boost the array voltage to a good level. I have had to do this with several of my predecessor's designs as he was used to doing 24V systems where two panels in series is a good choice."
===

I reached out to Outback Sales for references here in Baja California, Mexico.
My email was forwarded to a local installer.

I received a huge PDF proposal. selected Text and his images as follows
============
Solar panel upgrade for off grid installation. The project includes:
-Supply and installation of four JA Solar 345 Watts solar panels.
Spec: polycrystalline, 72 half-cells, UL listed, Marine rated.
-Supply and installation of aluminium and stainless steel rack to install 4 solar panels in the roof.
- Supply and installation of solar wire and MC4 connectors.
- Includes all accesories to make the installation.

=
Solar panel compatibility

Canadian Solar JA Solar
Power (W) 290 W 345 W
Cells 60 half cells 72 half cells
Current MPP 8.98 A 9.02 A
Voltage MPP 32.3 V 38.25 V
Voltage OC 38.9 V 46.07 V
Watts / Cell 2.42 W 2.40 W
=
Current instalation
-Four strings of two 60 half-cells solar panels which is not properly optimized for a 48V battery bank.

Upgrade proposal
- 4 series of 290+290+345w
- The solar panels are rated at different power and they are different brand but the design is compatible ant they will work at maximum efficiency.
- The string 4 should be installed according to the wood substricture, so it will have a +40o orientation.

=
JAP 72S10 345/SC

existing
existing.png
proposed
proposed.png
============
cost seems kinda reasonable.

I question the 40 degree Rotation of the new panels.
Existing panels Face due South, inclination matches solstice sun angle.

The metal roof structure is Very stout, 2x6 rafters at 24" and 2x4 purlins at 24".
There is no real need to spin them.

suggestions please!
Peter


*my system with photos for reference: http://outbackpower.com/forum/viewtopic ... 24&t=14010
Last edited by mexsudo on Sat Jan 02, 2021 5:01 pm, edited 1 time in total.
peter ehlert (mexsudo)
provo
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Posts: 630
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My RE system: Sixteen Evergreen EC-120
(4 strings, total 1920W)
Eight Rolls S-550 (2 strings, total ~800Ah @ 24V)
One FM80
One VFXR3524A
Hub 10
Mate3s
FNDC and Trimetric
Honda EU3000is generator
Location: Sierra foothills

Re: System Upgrade questions

Post by provo »

mexsudo wrote: Tue Jul 14, 2020 12:02 pm
Upgrade proposal
- 4 series of 290+290+345w
- The solar panels are rated at different power and they are different brand but the design is compatible ant they will work at maximum efficiency.
- The string 4 should be installed according to the wood substricture, so it will have a +40o orientation.



I question the 40 degree Rotation of the new panels.
Existing panels Face due South, inclination matches solstice sun angle.

The metal roof structure is Very stout, 2x6 rafters at 24" and 2x4 purlins at 24".
There is no real need to spin them.
Here's the result of a 40° azimuth error at noon on the summer solstice in Ensenada:

Ensenada 40° az error.jpg

This little spreadsheet tells you the angle between the panel perpendicular and the sun vector. 7° isn't much -- of course, at other times and seasons the error may be more.
raysun
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Posts: 3829
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My RE system: Flexpower Two: (2) FXR3048A, (2) FM80, MATE3s, FlexNetDC
SimpliPhi 48-3.8 (6 @ 48v)
Outback IBR3 battery enclosure
Suniva 330 watt panels (12 - 6 strings of 2 in series)
Hyundai 355 watt panels (6 - 3 strings of 2 in series)
Honda EU7000is gas fuel generator

Re: System Upgrade questions

Post by raysun »

The 3645W aggregate array wattage is somewhat over the maximum rated for the FM60. (3645W / 50V = 72A)

While the negative power coefficient above STC, and a warm climate will mitigate the issue to a good degree, it does leave open the possibility of equipment damage and does void the FM60's warranty.

One operational consideration is the oversized array will make the FM60's cooling fan run a good deal of the time. Fans are the #1 component to fail. You DO NOT want to go through the considerable hassle of replacing the very inconveniently placed fan in the FM60.

I'd suggest upgrading to an FM80 (drop in replacement) and sell the FM60.
fcwlp
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My RE system: GS8048A, FM80 w/3,600W PV Fixed, FM80 w/2,700W on Zomeworks tracker, Mate3, 24 Trojan 2V L16 1100AH @ C20, Grid-Tied with Kohler 14RESA LPG Generator and MEP-803 Diesel if needed.

I install and maintain grid-tied and off-grid systems in my area and consult on solar system design/operation.
Location: 80 miles NE of Phoenix at 5500'

Re: System Upgrade questions

Post by fcwlp »

Hi Peter, sorry I can not make it to Ensenada.

I would follow raysun's advice and replace the FM60 with an FM80 for this upgrade.

I would prefer to see all the panels with the same orientation to optimize the CC's MPPT. I understand the installer's concern on following the rafter orientation. If the rafters are exposed, sleeper blocks could be placed between the rafters for the mounts to attach to.
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mexsudo
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Posts: 140
Joined: Wed Mar 13, 2019 7:40 pm
My RE system: 8 290 watt panels: Canadian Solar CS3K-290P
8 AGM 12v 115Ah batteries: Duravolt DGG115-2 (48 volt)
Inverter: Outback VFXR3648A, 3600VA
Charge Controller: Outback FLEXmax 60, FM60-150VDC
System Display and Controller: Outback MATE3s
===
4 370watt panels Axitec AXIPREMIUM
APSystems QS1A 1500W micro inverter
APSystems ECU-R
Location: Ensenada, Baja California, Mexico

Re: System Upgrade questions

Post by mexsudo »

Thanks all.
I think I will go with getting a FM80.

I see them on Amazon for ~$444 USD delivered to my US mail box. it seems a Road Trip is coming up.

The rafter/purlin situation gives me all the options I desire for proper panel orientation
2020-07-14 11.30.02a.jpg
peter ehlert (mexsudo)
raysun
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Posts: 3829
Joined: Tue Jul 26, 2016 5:57 am
My RE system: Flexpower Two: (2) FXR3048A, (2) FM80, MATE3s, FlexNetDC
SimpliPhi 48-3.8 (6 @ 48v)
Outback IBR3 battery enclosure
Suniva 330 watt panels (12 - 6 strings of 2 in series)
Hyundai 355 watt panels (6 - 3 strings of 2 in series)
Honda EU7000is gas fuel generator

Re: System Upgrade questions

Post by raysun »

mexsudo wrote: Tue Jul 14, 2020 8:06 pm Thanks all.
I think I will go with getting a FM80.

I see them on Amazon for ~$444 USD delivered to my US mail box. it seems a Road Trip is coming up.

The rafter/purlin situation gives me all the options I desire for proper panel orientation

2020-07-14 11.30.02a.jpg
That's a good price on the FM80. You will want to make sure your PV disconnect is at least 60A for a 6Ga feed from the combiner, and the Charge Controller disconnect is 80A. Not sure what's in circuit right now but this is the OB 80A GFDI for ground fault protection from PV panels, through CC, to battery. https://www.solar-electric.com/outback- ... ector.html
pss
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My RE system: 8330 watts in three strings, Flexmax 60 x 3, Radian 8048A, GSLC load center, Mate 3S, Hub 10.3, FN-DC and 900 Amp, 48V Trojan T105-RE battery bank.

Re: System Upgrade questions

Post by pss »

If you can make it from Baja to San Diego, you can easily purchase Q-cell 295 watt panels for under $200 here. probably a better match. Just look on craig's list. Also, solar distributors will sell to public here, like giant toy stores for solar. I would use the larger panels from the quote. I wouldn't waste time upping the charge controller. Just find a 280-300 watt panel, 60-72 cell. Should be easy. I have mixed panels from 235-245 and no problems in performance to get 3 in series. The forum helpers are correct about putting three in series though.
raysun
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Posts: 3829
Joined: Tue Jul 26, 2016 5:57 am
My RE system: Flexpower Two: (2) FXR3048A, (2) FM80, MATE3s, FlexNetDC
SimpliPhi 48-3.8 (6 @ 48v)
Outback IBR3 battery enclosure
Suniva 330 watt panels (12 - 6 strings of 2 in series)
Hyundai 355 watt panels (6 - 3 strings of 2 in series)
Honda EU7000is gas fuel generator

Re: System Upgrade questions

Post by raysun »

pss wrote: Wed Jul 15, 2020 7:28 am The forum helpers are correct about putting three in series though.
Correct in what way?

Since the system is in a warm climate, there's little issue with cold-weather effects, so 3 panels in series will not likely exceed the 150V maximum input of the charge controller. Cloud-edge effects may be another story.

The charge controller only needs 1.5V above the battery voltage to produce charging current. Buck converters lose efficiency as the delta between input voltage and output voltage rises. They also operate at a lower duty cycle.

It was mentioned the panels operate most ideally near the top of their IV curve, but is that not internal to the panel, not measured at the poles of the string?

IMO, the main benefit of strings of 3 v s. strings of 2 is less I^2•R loss in transmission from the roof to the charge controller. Is that a big factor here? 10ga wiring is not going to be particularly lossy with the panels being used. Wiring costs are lowered by the longer strings, but it doesn't look like that's a big issue either.

Is there something I'm missing?
fcwlp
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Posts: 704
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My RE system: GS8048A, FM80 w/3,600W PV Fixed, FM80 w/2,700W on Zomeworks tracker, Mate3, 24 Trojan 2V L16 1100AH @ C20, Grid-Tied with Kohler 14RESA LPG Generator and MEP-803 Diesel if needed.

I install and maintain grid-tied and off-grid systems in my area and consult on solar system design/operation.
Location: 80 miles NE of Phoenix at 5500'

Re: System Upgrade questions

Post by fcwlp »

raysun wrote: Wed Jul 15, 2020 9:56 am It was mentioned the panels operate most ideally near the top of their IV curve, but is that not internal to the panel, not measured at the poles of the string?
The MPPT function on the CC is going to try to find the optimal power, which is of course the current (i) times the voltage (V). With most 60 cell panels, when only two are in series on a hot day the panels are operating on the steep part of the I-V curve, in other words at a lower than optimal current. Therefore a lower power output for the string.
pss
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Posts: 659
Joined: Mon Jul 24, 2017 8:40 am
My RE system: 8330 watts in three strings, Flexmax 60 x 3, Radian 8048A, GSLC load center, Mate 3S, Hub 10.3, FN-DC and 900 Amp, 48V Trojan T105-RE battery bank.

Re: System Upgrade questions

Post by pss »

Ah weedhopper's of the forum. Back in my past, I had three arrays. Array 1 and 2 each consisted of 340 watt mono panels in a 4 x 2 arrangement into my combiner box. My third array consisted of 5 235 watt and 5 240 watt polycrystalline panels in a 5 x 2 arrangement into my combiner box. My system is 48 volt. I am where the sun always shines and the ambient temps can reach 114. Needless to say, as I have previously written, panel surface temps were in excess of 145 degrees. Needless to say, panel Voc is decreased. On a 48 volt system, using an mppt controller, it is nice to have the input voltage at least 64 volts and preferably over 70. This will allow the proprietary algorithm of the charge controller to work its hidden magic and optimize amps over voltage. Even today, on a day where it is ambient 92 and sunny, my 4 x 2 arrays have a Voc of 80.2 at noon. But, until I changed my third array, the summertime Voc would be between 55 and 62 on a hot day. There was literally nothing the mppt controller could do to push my charged voltage up to 58.6. So, after 2 years, I sought out 2 panels, matching as closely as I could to my original 10 panels (i woulnd up with 245 watt panels x 2). I reconfigured into a 3 x 4 string arrangement of 12 panels. Today, my Voc is 100.2 and my charge controller is in heaven, like it's enjoying halibut, king crab and lobster every day! Now, I never have to worry about the Voc being too high in the winter because the coldest sunny day I experience is about 55 degrees ( and our Baja friend doesn't have to worry either) and the panel surface temperature is above that. As for cloud effects, not a problem as even when my system wattage exceeds that on the name plates, the amperage flowing into my charge controllers is not exceeded and the Voc doesn't get over 150 on the 3 x 4 array. In fact, my lifetime maximum Voc is 116.4 while it is 86.8 on the other two arrays.

So as I commented, it is wise for our seeker of truth to either replace his array with larger, higher Voc panels 2 in series, or to simply add panels of nearly identical wattage and I'm certain if he look, he can find 290 watt panels readily available.
raysun
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My RE system: Flexpower Two: (2) FXR3048A, (2) FM80, MATE3s, FlexNetDC
SimpliPhi 48-3.8 (6 @ 48v)
Outback IBR3 battery enclosure
Suniva 330 watt panels (12 - 6 strings of 2 in series)
Hyundai 355 watt panels (6 - 3 strings of 2 in series)
Honda EU7000is gas fuel generator

Re: System Upgrade questions

Post by raysun »

fcwlp wrote: Wed Jul 15, 2020 11:39 am
raysun wrote: Wed Jul 15, 2020 9:56 am It was mentioned the panels operate most ideally near the top of their IV curve, but is that not internal to the panel, not measured at the poles of the string?
The MPPT function on the CC is going to try to find the optimal power, which is of course the current (i) times the voltage (V). With most 60 cell panels, when only two are in series on a hot day the panels are operating on the steep part of the I-V curve, in other words at a lower than optimal current. Therefore a lower power output for the string.
OK. Makes sense.
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mexsudo
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Posts: 140
Joined: Wed Mar 13, 2019 7:40 pm
My RE system: 8 290 watt panels: Canadian Solar CS3K-290P
8 AGM 12v 115Ah batteries: Duravolt DGG115-2 (48 volt)
Inverter: Outback VFXR3648A, 3600VA
Charge Controller: Outback FLEXmax 60, FM60-150VDC
System Display and Controller: Outback MATE3s
===
4 370watt panels Axitec AXIPREMIUM
APSystems QS1A 1500W micro inverter
APSystems ECU-R
Location: Ensenada, Baja California, Mexico

Re: System Upgrade questions

Post by mexsudo »

Thanks to all for the suggestions.
This is obviously not urgent, but I finally did get around to summarizing your comments and asking "local" installers.
===
This is the response I got from my original installer, Ing. David Ramirez
My Spanish is funky so I have included a Google translate:

Hola Peter, Buenos Dias, te comento que si es posible incrementar tu sistema de generacion, efectivamente es posible incrementar a 9 paneles la instalacion que tienes actualmente.
Para incrementar a mayor numero de paneles tienes 2 opciones:
Opcion 1: Instalar un controlador de carga adicional FM60, o pudiera ser FM80, pero creo que con un FM60 adicional seria muy suficiente. pues te da la opcion de incrementar al doble de la capacidad que tienes actualmente. Para solo sustituir el FM60 por el FM80, es necesario incrementar el calibre el cable que baja de los paneles, pues se incrementaria a 80 Amp, no siendo suficiente el instalado actualmente

Opcion 2( mas recomendada): Instalar microinversores con paneles que esten inyectando directamente a la red(CFE), estos no tendrian la capacidad de cargar baterias directamente, pero su manera de trabajar hace que la produccion de estos paneles sea mas eficiente, pues si tratas de cargar con muchos paneles tus baterias, produces estres en ellas, y sobrecalentamiento, el sistema outback, controla esto, y para evitar sobrecalentamiento reduce la inyeccion de energia, aun cuando tengas muchos paneles, y asi es como decide inyectar a la red, no, sin antes reducir la potencia.
Si se instalan microinversores estos inyectan la maxima energia a la red (CFE) siempre, por lo que estos paneles inyectan la energia producida al 100%, sin limitaciones.
Si me proporcionas tu recibo de CFE, te pudiera decir cuanto paneles adicionales necesitas,


Hello Peter, Good morning, let me tell you that if it is possible to increase your generation system, it is indeed possible to increase the installation you currently have to 9 panels.
To increase the number of panels you have 2 options:
Option 1: Install an additional FM60 charge controller, or it could be FM80, but I think an additional FM60 would suffice. It gives you the option to double the capacity you currently have. To only replace the FM60 with the FM80, it is necessary to increase the gauge of the cable that goes down from the panels, as it would increase to 80 Amp, the currently installed one is not enough

Option 2 (most recommended): Install microinverters with panels that are injecting directly into the grid (CFE), these would not have the ability to charge batteries directly, but their way of working makes the production of these panels more efficient, well yes You try to load your batteries with many panels, you produce stress in them, and overheating, the outback system controls this, and to avoid overheating it reduces the energy injection, even when you have many panels, and this is how you decide to inject into the network, no, without first reducing the power.
If microinverters are installed, they always inject the maximum energy into the grid (CFE), so these panels inject the energy produced at 100%, without limitations.
If you provide me with your CFE receipt, I could tell you how many additional panels you need,
peter ehlert (mexsudo)
fcwlp
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Posts: 704
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My RE system: GS8048A, FM80 w/3,600W PV Fixed, FM80 w/2,700W on Zomeworks tracker, Mate3, 24 Trojan 2V L16 1100AH @ C20, Grid-Tied with Kohler 14RESA LPG Generator and MEP-803 Diesel if needed.

I install and maintain grid-tied and off-grid systems in my area and consult on solar system design/operation.
Location: 80 miles NE of Phoenix at 5500'

Re: System Upgrade questions

Post by fcwlp »

Hi Peter,

The second option appears better at this time. Your current two strings of AGMs have 230AH of capacity. I forget if that is the C20 rate or C100. If C20, typical AGM charging limits are 20% of C20 or 46A. As a rough panels sizing, 46A x 50V is 2,300W. Your current array is 2,320W. You could add a couple of panels as previously discussed to present array, but I would not upgrade to an FM80 given your current battery bank size.

You will produce more watts per peso spent with AC coupled option. They will do nothing for you however when the grid is down.
User avatar
mexsudo
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Posts: 140
Joined: Wed Mar 13, 2019 7:40 pm
My RE system: 8 290 watt panels: Canadian Solar CS3K-290P
8 AGM 12v 115Ah batteries: Duravolt DGG115-2 (48 volt)
Inverter: Outback VFXR3648A, 3600VA
Charge Controller: Outback FLEXmax 60, FM60-150VDC
System Display and Controller: Outback MATE3s
===
4 370watt panels Axitec AXIPREMIUM
APSystems QS1A 1500W micro inverter
APSystems ECU-R
Location: Ensenada, Baja California, Mexico

Re: System Upgrade questions

Post by mexsudo »

fcwlp wrote: Mon Nov 23, 2020 4:45 pm Hi Peter,

The second option appears better at this time. Your current two strings of AGMs have 230AH of capacity. I forget if that is the C20 rate or C100. If C20, typical AGM charging limits are 20% of C20 or 46A. As a rough panels sizing, 46A x 50V is 2,300W. Your current array is 2,320W. You could add a couple of panels as previously discussed to present array, but I would not upgrade to an FM80 given your current battery bank size.

You will produce more watts per peso spent with AC coupled option. They will do nothing for you however when the grid is down.
Thanks for that.

I responded to David with the info he wanted.
===
CFE history 2020-10-15.png
38 days... since the last meter reading on 2020-10-15
475 from the grid, 126 to the grid = 349

I anticipate the load will increase about 20%
====
I am waiting for his response, via email. My hearing is squat, and my Spanish is crap.
-----
I am trying to wrap my head around the way the microinverters would be implemented.
My primary desire is blackout protection.

At this point when the grid goes down my battery gets recharged from the panels until the grid is up... then when the grid is up, it also recharges from the grid. That is ideal for me: Full Battery.
Blackouts sometimes last Days.

My thought: keep existing panels hooked as they are now, then add a small set with mocroinverters to also inject into the grid to reduce my annual cost. (we get 1:1, banked for one year)
I "think" that can be done.
peter ehlert (mexsudo)
fcwlp
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Posts: 704
Joined: Wed Jan 22, 2020 9:40 am
My RE system: GS8048A, FM80 w/3,600W PV Fixed, FM80 w/2,700W on Zomeworks tracker, Mate3, 24 Trojan 2V L16 1100AH @ C20, Grid-Tied with Kohler 14RESA LPG Generator and MEP-803 Diesel if needed.

I install and maintain grid-tied and off-grid systems in my area and consult on solar system design/operation.
Location: 80 miles NE of Phoenix at 5500'

Re: System Upgrade questions

Post by fcwlp »

mexsudo wrote: Tue Nov 24, 2020 5:26 am I am trying to wrap my head around the way the microinverters would be implemented.
My primary desire is blackout protection.
The VFXR series inverters cannot do AC coupling like the Skybox and Radian series. These microinverters will directly feed the grid. Unfortunately when the grid goes down the panels will stop producing.
User avatar
mexsudo
Forum Guru
Posts: 140
Joined: Wed Mar 13, 2019 7:40 pm
My RE system: 8 290 watt panels: Canadian Solar CS3K-290P
8 AGM 12v 115Ah batteries: Duravolt DGG115-2 (48 volt)
Inverter: Outback VFXR3648A, 3600VA
Charge Controller: Outback FLEXmax 60, FM60-150VDC
System Display and Controller: Outback MATE3s
===
4 370watt panels Axitec AXIPREMIUM
APSystems QS1A 1500W micro inverter
APSystems ECU-R
Location: Ensenada, Baja California, Mexico

Re: System Upgrade questions

Post by mexsudo »

David responded with a proposal, several options, to run parallel with my outback system..
he is recommending what he feels is high quality hardware (and locally available).

summary:
4 Axitec 370w panels.
AXIPREMIUM 72-cell monocrystalline

1 micro inverter APSystems QS1 1500W
(a four-module, high-power microinverter)

1 APSystems ECU-R
(APsystems Gatewa Energy Communication Unit)

My understanding is:
All "excess" will be injected to the grid (banking credit with CFE (my supplier) at 1:1) reducing/eliminating my power bill.
This will not effect my current battery system that is working very well for blackout protection.

at this point I believe I will go with it

PS: I would kinda prefer to stay with all Outback, but considering my existing system it appears I need to go with other suppliers for micro inverters.
peter ehlert (mexsudo)
fcwlp
Forum Czar
Posts: 704
Joined: Wed Jan 22, 2020 9:40 am
My RE system: GS8048A, FM80 w/3,600W PV Fixed, FM80 w/2,700W on Zomeworks tracker, Mate3, 24 Trojan 2V L16 1100AH @ C20, Grid-Tied with Kohler 14RESA LPG Generator and MEP-803 Diesel if needed.

I install and maintain grid-tied and off-grid systems in my area and consult on solar system design/operation.
Location: 80 miles NE of Phoenix at 5500'

Re: System Upgrade questions

Post by fcwlp »

Hi Peter,

It looks like a good proposal. For just putting power back into the grid the microinverters are hard to beat.
User avatar
mexsudo
Forum Guru
Posts: 140
Joined: Wed Mar 13, 2019 7:40 pm
My RE system: 8 290 watt panels: Canadian Solar CS3K-290P
8 AGM 12v 115Ah batteries: Duravolt DGG115-2 (48 volt)
Inverter: Outback VFXR3648A, 3600VA
Charge Controller: Outback FLEXmax 60, FM60-150VDC
System Display and Controller: Outback MATE3s
===
4 370watt panels Axitec AXIPREMIUM
APSystems QS1A 1500W micro inverter
APSystems ECU-R
Location: Ensenada, Baja California, Mexico

Re: System Upgrade questions

Post by mexsudo »

fcwlp wrote: Sat Nov 28, 2020 1:17 pm Hi Peter,

It looks like a good proposal. For just putting power back into the grid the microinverters are hard to beat.
Yes, I also think it is.
I really liked David's craftsmanship on the original install, and later the battery enhancement.

I have spent many hours researching, continuing my Solar 101 program ;-) ... surprised at the technology advances over the last couple years too.
peter ehlert (mexsudo)
User avatar
mexsudo
Forum Guru
Posts: 140
Joined: Wed Mar 13, 2019 7:40 pm
My RE system: 8 290 watt panels: Canadian Solar CS3K-290P
8 AGM 12v 115Ah batteries: Duravolt DGG115-2 (48 volt)
Inverter: Outback VFXR3648A, 3600VA
Charge Controller: Outback FLEXmax 60, FM60-150VDC
System Display and Controller: Outback MATE3s
===
4 370watt panels Axitec AXIPREMIUM
APSystems QS1A 1500W micro inverter
APSystems ECU-R
Location: Ensenada, Baja California, Mexico

Re: System Upgrade questions

Post by mexsudo »

to close this thread...

First: thanks for the ideas
the upgrade went very well. I am happy with the products and the craftsmanship.
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