funken:
abeg show us the fangpusun way o.. abeg

Have you imported before?...

olopan:


it ....
@
CC : Ojeysky Olaolu11
This image is for you .... worked on it earlier today.
Hope that my help will be useful to your purpose.

Kr
Olopan.

Found an online calculator as well: https://www.rapidtables.com/calc/wire/awg-to-mm.html

Good evening house,
Please i need urgent help.
My office intends to install a solar system.
The installer gave a very questionable quotation.

Below is a brief summary of the installers spec
30kw 3 phase inverter,
100 units of 300w solar panels (24v)
60 units of 12v 200AH SMF

Duh its not in my department but my colleague asked me to help him since i have solar system in my house.
I made a few calls but it seems 40 kva inverters are not too common.

Based on some research i came up with a
40kva Inverter (360v)
105nr of 340w mono panels in 15S 7P arrangement
60nr of 12v 200Ah batteries in 30S 2P arrangement


Please
1. What brand of 40kva can be recommended ( if possible capable of custom setting for lithium battery cahrging )
2. Are there lithium batteries that can be connected in series to achieve 360v.

hardywaltz:
Good evening house,
Please i need urgent help.
My office intends to install a solar system.
The installer gave a very questionable quotation.

Below is a brief summary of the installers spec
30kw 3 phase inverter,
100 units of 300w solar panels (24v)
60 units of 12v 200AH SMF

Duh its not in my department but my colleague asked me to help him since i have solar system in my house.
I made a few calls but it seems 40 kva inverters are not too common.

Based on some research i came up with a
40kva Inverter (360v)
105nr of 340w mono panels in 15S 7P arrangement
60nr of 12v 200Ah batteries in 30S 2P arrangement


Please
1. What brand of 40kva can be recommended ( if possible capable of custom setting for lithium battery cahrging )
2. Are there lithium batteries that can be connected in series to achieve 360v.

With this kind of load/system, ur batteries will die prematurely. Never use a 12v single battery for this system, get a cell, 2v 1500ah and connect them in series. Never use a 12v o, u hear me so?

Dear Adrusa, Kindly link me up to where you bought your local Installer. Thanks in advance


That is largely true and it is because many "dealers" here are just middle men trying to make a living on enthusiasts who don't want to go to the market. I almost paid for 300W flame solar panels here until my local installer got them for me from Alaba for about 10K lower. What they do is to advertise goods in other people's shops as their own. It is the reason why they also try to put people under pressure to pay fast as the "stock is small". I personally would have preferred that this place is reserved for hobbyists and enthusiasts while marketers and middle men set up their own thread.[/quote]

Oshomo12:


With this kind of load/system, ur batteries will die prematurely. Never use a 12v single battery for this system, get a cell, 2v 1500ah and connect them in series. Never use a 12v o, u hear me so?

Using 2v battery for a 360v inverter will require 180 batteries connected in series.

I doubt that's a bright idea

ojeysky:


Found an online calculator as well: https://www.rapidtables.com/calc/wire/awg-to-mm.html

So my 10mm will now be triple 0(000)awg. I tire o

olaolu11:



can that also be used?

I am also curious to know and I was hoping you could tell me.

That is about the armoured cable I know is accessible and ubiquitous. But I always assumed the conductor inside is aluminium in place of copper and that it is non-stranded - two things that make it inappropriate for solar installations.

earthrealm:


Seems the 2 companies are fighting, cos i have seen pics where the other maker labelled the other one fake, and theirs original ...
Seems it supports 48v and with 190Voc input voltage, it sure trumps the cheap 24v/50amp 100Voc fangpusun victron clone that has $103 landing price

They're just confusint everyone with their fight, one claiming authenticity and the other as fake.

olaolu11:



Does it display % charge and battery % remaining?

Nope. I don't think most SCC do. Percentage battery remaining is usually in the purview of the inverters, as part of the manufacturing process. Basically the on screen information available on this SCC and indeed most SCC are the panel voltage, charging current, charging power (watt), battery voltage (V), temperature and maybe one or two other parameters that I can't recall right now.

There is also programmable option to customize parameters.

Now this issue of equalization mentioned by @ Namzy is a new angle to this. I think I need to do some more findings on that. Meanwhile, the MakeSkyBlue one has been running one of my modular units for about 8 months without issues. Thinking of trying out the PowerMr one (with their recent upsurge of accusations against MakeSkyBlue) just so to know who between the two is telling the truth .

But pending my investigation, I believe that if most PWM SCCs can boast a veritable equalization phase, then I see no reason why this MPPT should lack that feature. The only variation/downside in the charging process that I think it might suffer from is the DURATION of equalization, something which one of either the fangpusun or Epever products seem to have too (I stand to be corrected, but I think I have read something like that on here before)

@Earthrealm, what d'you think about this product lacking equalization?

olaolu11:



No. Present one I'm using is AC pumping machine cable. Bit I will order the 10mm DC cable from my customer at Alana. He is selling dual-core 10mm for 750/metre. Will send pictures presently

Is that aluminium wires?

Pumping machine cables I know have copper conductors o, not aluminium. And maybe aluminium can still deliver enough juice for AC cabling, but in DC application, I think copper cabling is still best for efficiency, the recurrent watchword in solar set ups.

adrusa:


That is largely true and it is because many "dealers" here are just middle men trying to make a living on enthusiasts who don't want to go to the market. I almost paid for 300W flame solar panels here until my local installer got them for me from Alaba for about 10K lower. What they do is to advertise goods in other people's shops as their own. It is the reason why they also try to put people under pressure to pay fast as the "stock is small". I personally would have preferred that this place is reserved for hobbyists and enthusiasts while marketers and middle men set up their own thread.

10k difference?!
That's enough change to get you some few meters of extra cabling o.

BetaTechnicians:

which one is local installer? shey there's foreign installer?

Neighbourhood installer I think. Compared to those that need to travel down from Abuja or Lagos to work. Those ones are "foreign or expatriates" And it reflects in their charges anyways. Foreign things.

hardywaltz:
Good evening house,
Please i need urgent help.
My office intends to install a solar system.
The installer gave a very questionable quotation.

Below is a brief summary of the installers spec
30kw 3 phase inverter,
100 units of 300w solar panels (24v)
60 units of 12v 200AH SMF

Duh its not in my department but my colleague asked me to help him since i have solar system in my house.

I made a few calls but it seems 40 kva inverters are not too common.

Based on some research i came up with a
40kva Inverter (360v)
105nr of 340w mono panels in 15S 7P arrangement
60nr of 12v 200Ah batteries in 30S 2P arrangement


Please
1. What brand of 40kva can be recommended ( if possible capable of custom setting for lithium battery cahrging )
2. Are there lithium batteries that can be connected in series to achieve 360v.

Good evening hardywaltz,

so i will try as much as possible to take your request line by line.

For a start am not too sure that there is a 30KW 3 phase par say, NB: 1KVA = 0.8KW
but if judging by the 40KVA in your third paragraph, then that's a 32KW system, again not sure of its existence but eh! I.D.K.I.A
So I guess the installer has an indian inverter type in mind.
¬
For the panels Not bad the solar panels are good but i would do things differently.

60 units of 200Ah - to me is a bit much, if right he'd like to do a parallel string of 360V x 200Ah x 2 = 144,000Wh
[
i'd say from your findings you've things right, vaguely.
but charge controllers determine solar panels used and loads and charge time affect it all.

On the battery too, i'd say spot on.

since Lithium battery is newer to this hemisphere, I’d proceed with caution to play safe.

BUT

I would have done things differently to achieved a more simple and efficient system.

I will choose a 48V system, eh! I don’t want to die of high voltage while connecting my batteries due to a cut in my safety gloves.

Now that am certain of my system voltage, i will proceed to get premium product to cover my huge investment.

For the Inverter
Since this is a 3 Phase installation I will go with a Victron Quattro inverters/charger of 10Kva, paired to work in synergy of three phase [R,Y,B]
this way I’av bypassed high voltage and still end up with an equivalent power, even better with 1.0 pF [power factor].

Overview
I will make use of an AC - DC coupled system, so that my loads will run off my PV - inverter during when the sun is up and my DC charge controllers will charge the batteries and still be able to provide more in case of more power needs and the wake up the installation in case of battery too low to get inverter systems up when low.

So i will go with a PV Inverter of around 25KW which should be sufficient to power load when needed and especially at full power and a solar charge controller of high Voc that can charge my battery when PV inverter covers my loads.

i.e.
92 nos of 300W canadian solar panel to a 25KW PV - inverter [ allows oversizing]
and
18 nos of 300W canadian solar panel to a smart charge controller

in total 110 nos of 300W panel equivalent to 33KWp.

For Batteries
Concerning the batterries
I will go for Hoppecke batteries, of 2V ~1500Ah nominal @ 72KWh or 2900Ah Max. @ 139.2KWh

this means that
I won’t change my batteries in the next two - three years soon but more of five to seven years, and making sure that ROI [ return on investment] is guaranteed.

With a easy to understand system.

Credit: Rendezvous Solar
free free to contact me if non of the info is not clear enough .
Rendezvoussolar@gmail.com

the image should shed more light too

@hardywaltz, take the battery recommendation @Oshomo12 gave you serious. I am also talking from experience.

Oshomo12:


With this kind of load/system, ur batteries will die prematurely. Never use a 12v single battery for this system, get a cell, 2v 1500ah and connect them in series. Never use a 12v o, u hear me so?

hardywaltz:

Using 2v battery for a 360v inverter will require 180 batteries connected in series.

I doubt that's a bright idea

Dear Adrusa, Kindly link me up with your local Installer. Thanks in advance

adrusa:


That is largely true and it is because many "dealers" here are just middle men trying to make a living on enthusiasts who don't want to go to the market. I almost paid for 300W flame solar panels here until my local installer got them for me from Alaba for about 10K lower. What they do is to advertise goods in other people's shops as their own. It is the reason why they also try to put people under pressure to pay fast as the "stock is small". I personally would have preferred that this place is reserved for hobbyists and enthusiasts while marketers and middle men set up their own thread.

yes but from the US

Trippledots:


Have you imported before?...

hardywaltz:

Using 2v battery for a 360v inverter will require 180 batteries connected in series.

[b][/b]I doubt that's a bright idea

Oh, sorry, my bad. 12v is super bright then, good luck.

olaolu11:



So my 10mm will now be triple 0(000)awg. I tire o

I think it's the mm² that you will look at

ceaser:


Nope. I don't think most SCC do. Percentage battery remaining is usually in the purview of the inverters, as part of the manufacturing process. Basically the on screen information available on this SCC and indeed most SCC are the panel voltage, charging current, charging power (watt), battery voltage (V), temperature and maybe one or two other parameters that I can't recall right now.

@Earthrealm, what d'you think about this product lacking equalization?

equalization is only necessary if you have flooded batteries or you intend to install them in the future, if not, no need for the equalization function.

again, if your inverter has equalization setting, and you have utility power supply, that shud also suffice, 4hrs of equalization per month is the standard for most users

hardywaltz:
Good evening house,
Please i need urgent help.
My office intends to install a solar system.
The installer gave a very questionable quotation.

Below is a brief summary of the installers spec
30kw 3 phase inverter,
100 units of 300w solar panels (24v)
60 units of 12v 200AH SMF

Duh its not in my department but my colleague asked me to help him since i have solar system in my house.
I made a few calls but it seems 40 kva inverters are not too common.

Based on some research i came up with a
40kva Inverter (360v)
105nr of 340w mono panels in 15S 7P arrangement
60nr of 12v 200Ah batteries in 30S 2P arrangement


Please
1. What brand of 40kva can be recommended ( if possible capable of custom setting for lithium battery cahrging )
2. Are there lithium batteries that can be connected in series to achieve 360v.

https://www.victronenergy.com/blog/2017/05/05/saving-lives-in-sierra-leone/

I will go with something along the lines of this project.
For a project of this magnitude, I will involve tested and trusted gurus like SolarDepot, Pharyn and AWPS.
You can also contact Oga Pranil for some priceless advice.

hardywaltz:
Good evening house,
Please i need urgent help.

Based on some research i came up with a
40kva Inverter (360v)
105nr of 340w mono panels in 15S 7P arrangement
60nr of 12v 200Ah batteries in 30S 2P arrangement


Please
1. What brand of 40kva can be recommended ( if possible capable of custom setting for lithium battery cahrging )
2. Are there lithium batteries that can be connected in series to achieve 360v.

do they have any 3 phase equipment?
i have come to realize that most people get confused with this 3 phase issh, if the answer is no, and depending on how the wiring/load distribution is done, you may be better off with 3 units 10kva or 2 units of 15kva inverter, am seeing it from a functional point of view, not cost, a 1n indian 10kva inverter shud be about 800k to 1.2m, i prefer having 2 0r 3 separate inverters, so in the eventuality of fault/breakdown, the whole facility will not be thrown into darkness.

secondly like the other people have said, a 2v 1500ah battery is far better than the 12v 200ah, u have in mind, this reduces nos of cells, and makes change out of failed batts/cell easy and cheap.

3rdly, a 48v inverter is ideal , or worst case 96v, few charge controllers can handle 360v, so u hv very limited choices, when it comes to charge controller

the other issh about quantioty of panels and arrangment, is easy, you do it based on the anticip[ated load etc, i believe this issue has been thoroughly thrashed here

fourth, this is a big job, so ensure some form of waranty is built into the agreement, i didnt see any cost for thunder/lightning protection.

I have read many excellent answers here but I want to chip in my 2 cents.

Any RE installation and especially a large one such as you contemplate must start from the load analysis.

With 60units of 12v 200Ah batteries, the implication is that you have ~120Kwh of useable storage and plan to run on the average 6Kw (6000w) of loads off the batteries assuming standard C20 discharge - I question this assumption as this is an office (assume will not run overnight) and you also have about 30Kw of panels planned. 30Kw of panels should be able to generate 20kw instantaneous during the peak hours of the day sufficient to power 6kw of day time loads.

Are your planned loads indeed 6kw per time? Do you plan to run this 6kw overnight as well? If your loads are really 6kw then a 30kw 3 phase inverter is some serious overkill - using an indian type inverter will also have serious limitations as the nominal voltage will force you out of what premium charge controllers will support.

Is there even sufficient roof or ground space to mount 100 panels?

I think it would help if you gave us an idea of your office load requirements separated into daytime and night time loads - you may be able to get by with a lot less than you think you need especially if your loads are more of daytime loads.

For the 2v vs. 12v debate, I am on the fence on that one - in either scenario, you will face the significant hurdle of keeping cells balanced as the batteries age and are subjected to large loads and deep cycles. And a 2v 1500Ah battery may cost significantly more than an equivalent 12v battery when it comes to replacement and especially I have not found satisfactory way to charge a 2v cell standalone. All in all, use batteries only in the application they are rated for and well within their tolerance limits and all should be well.

A system of such scale as you contemplate is a significant investment - I hope my questions about load and proper system sizing steer you in the right direction.

hardywaltz:
Good evening house,
Please i need urgent help.
My office intends to install a solar system.
The installer gave a very questionable quotation.

Below is a brief summary of the installers spec
30kw 3 phase inverter,
100 units of 300w solar panels (24v)
60 units of 12v 200AH SMF

Duh its not in my department but my colleague asked me to help him since i have solar system in my house.
I made a few calls but it seems 40 kva inverters are not too common.

Based on some research i came up with a
40kva Inverter (360v)
105nr of 340w mono panels in 15S 7P arrangement
60nr of 12v 200Ah batteries in 30S 2P arrangement


Please
1. What brand of 40kva can be recommended ( if possible capable of custom setting for lithium battery cahrging )
2. Are there lithium batteries that can be connected in series to achieve 360v.

sintolord:
Dear Adrusa, Kindly link me up with your local Installer. Thanks in advance

You can speak with him on zero8one5zero9six5673 or 0eight0nine5seven83119

earthrealm:


equalization is only necessary if you have flooded batteries or you intend to install them in the future, if not, no need for the equalization function.

again, if your inverter has equalization setting, and you have utility power supply, that shud also suffice, 4hrs of equalization per month is the standard for most users

Thanks for coming through.

ceaser:


Thanks for coming through.

This is main problem with that charge controller. How come there different voc for different battery voltage or is that the way the voc of a charge controller is calculated?

earthrealm:

.

again, if your inverter has equalization setting, and you have utility power supply, that shud also suffice, 4hrs of equalization per month is the standard for most users

I have been looking to get response to the question I asked earlier on equalization, this serves my purpose. If I may further ask, so it's better to do equalization on utility and not on solar source? What if utility power goes off in the process, is there a risk to my batteries?

....

dejidotun2000:
please share the model number and nameplate of this freezer

ceaser:




... a 110 litres 114 watts 72 hours off power freezing capacity variant...

Thank you all for your response
We will be having a meeting with the installer in the days to come but in the office we settled with the following specs. (Basics)

96 nr 340w solar in 4S6P x 6 strings
6 nr Midnite Combiner box
6nr 250/100 Victron Smartsolar Charge Controller
3nr 48/15000/200-100/100 Victron inverter paralleled to give 3 phase.
9nr 48/13.8kw Lithium batteries complete with bms connected in parallel to give 124.2kw
Busbars, fuses, etc

SOLARWORLD PANEL PRICES"Made in Germany" !

SW 345W mono = N75,000.00
SW 340W mono(above 30) = N73,500.00
SW 315W mono = N70,000.00
SW 280W mono glass = N62,000.00
SW 175W Poly (14pcs) = N40,000.00


Trojan 12v 205Ah AGM USA battery = N170,000
Trojan 6v 315Ah AGM USA battery = N154,000

*CYBERPOWER INVERTERS"PURESINEWAVE" PRICES*

▪CPSPIE-2.5KVA/24V PSW Inverter +AC/DC Cables: N150,000.

▪CPSPIE-3.5KVA/24V PSW Inverter +AC/DC Cables: N270,000.

▪CPSPIE-5KVA/48V PSW Inverter + AC/DC Cables:
N430,000

Quanta 200a inverter battery .... N130,000


Contact,
Smartcellglobal services
081-350-319-51
WHATSAPP::: https:///2348170385620

ojeysky:


I have been looking to get response to the question I asked earlier on equalization, this serves my purpose. If I may further ask, so it's better to do equalization on utility and not on solar source? What if utility power goes off in the process, is there a risk to my batteries?

you can equalize with any, personally i prefer equalizing by phcn,its more straight forward for me, my epsolar cc has an equalization setting for every 28days, i hvnt ever witnessed it happen, cos the installation is in another location.

it doesnt matter if power goes off during the equalization, u can continue whenever phcn comes back, i regularly equalize upto 8 to 12hrs cumulative, because of power outages during the process