I dont know if this section is the appropriate forum for my question thus, i have a 1.5kva inverter 24volts powered by 2 12v 200ah batteries, but now want to configure it with 2 panels of 200watts 24volts solar panels i have also a 12/ 24vdc 30amps charger control. My question is, are the 2 200w 24vdc solar panels connected in parallel well ok to properly charge these batteries? to there prime full charging point from 10.30 to 4.30pm?

bros go call solar installers, haba, make person chop ur money smal na

Apipia:
I dont know if this section is the appropriate forum for my question thus, i have a 1.5kva inverter 24volts powered by 2 12v 200ah batteries, but now want to configure it with 2 panels of 200watts 24volts solar panels i have also a 12/ 24vdc 30amps charger control. My question is, are the 2 200w 24vdc solar panels connected in parallel well ok to properly charge these batteries? to there prime full charging point from 10.30 to 4.30pm?

I need to congratulate you on your focus towards enjoying 24hrs electricity in our beloved country.

Your question is expected perhaps due to the huge cost of batteries. Even though your setup is small, things has to be done right.

There factors to considered when doing solar system design. I am going to make some assumptions since the information you supplied is insufficient and probably you may have connected your stuff already. However, you've stated you have "30a" controller plus 2 "200ah" batteries means amps matters a lot.

I hope you have rated cables, meanwhile I assume your controller is pwm which is OK for a small setup like yours. 200w will give you around 9amps, so take a look at:

To charge your batteries you have

2x200w In parallel= 18amps and 9amps in series
18x6hrs sunlight=108ah for pwm controller while with mppt controller in parallel=20.3amps and a little more in Series
20.3x6hrs=122ah which is 61% of your 200ah battery bank@24v

In essence, you have only 50-60% of your batteries as daily disposable at nitetime. So manage loads consumption to less than 10amps or 240w/hr till sun comes up and you should be fine for years to come.

Welcome on board. Let's leave Nija better than we meet it.

@efuro, thanks for your honest information, my primary aim is to have my television (70w) satellite decoder and home theater (75w) table top fridge (105w) Binatone ceiling fan (60w) charge our phones and tablet on during the day. And have my 15 pcs (not all)of 5watts led bulb on at night especially 3room 2bulbs per room, 2 balcony lights, 1bulb per balcony to be on all through the nite, 2 toilet to be switched on and off as per use, the tv ,home theater, satellite decoder,bulbs in the lounge to be off by 11pm, including all other bulbs, excluding the balcony and kitchen.
Hence i suggested to the former installer for a hybrid configuration, he instructed me to buy the solar pv 200wx2 , Solar charger, 4mm flex cord, on the solar pv, i want him to up to 250 or 300w, by this i need additional suggestion . Those equipment I mentioned, i need them operate during the day light hours, typically i work from home

Apipia:
@efuro, thanks for your honest information, my primary aim is to have my television (70w) satellite decoder and home theater (75w) table top fridge (105w) Binatone ceiling fan (60w) charge our phones and tablet on during the day. And have my 15 pcs (not all)of 5watts led bulb on at night especially 3room 2bulbs per room, 2 balcony lights, 1bulb per balcony to be on all through the nite, 2 toilet to be switched on and off as per use, the tv ,home theater, satellite decoder,bulbs in the lounge to be off by 11pm, including all other bulbs, excluding the balcony and kitchen.
Hence i suggested to the former installer for a hybrid configuration, he instructed me to buy the solar pv 200wx2 , Solar charger, 4mm flex cord, on the solar pv, i want him to up to 250 or 300w, by this i need additional suggestion . Those equipment I mentioned, i need them operate during the day light hours, typically i work from home

Your loads are generic, nothing special.
It will be interesting to know or see pix of What type of CC u have, nevertheless, you'll be betteroff if u add one more panel for the seek of ur batteries on a cloudy days.

Addition, DC watt meter will do you good if installed @ output terminals of ur batteries to monitor ur consumption @ nite.

Cheers!

efuro:


Your loads are generic, nothing special.
It will be interesting to know or see pix of What type of CC u have, nevertheless, you'll be betteroff if u add one more panel for the seek of ur batteries on a cloudy days.

Addition of DC watt meter will do you good if installed @ output terminals of ur batteries to monitor ur consumption @ note.

Cheers!

Thanks for the effort to guide, not that i am totally off grid, our power grid is always off from 10am to 3pm, or 11am to 5pm, sometimes off again from 8pm to 12am or stays thru the night, what of if i up it to 2, 300w poly pv? Or 4units of 150w?

Apipia:

Thanks for the effort to guide, not that i am totally off grid, our power grid is always off from 10am to 3pm, or 11am to 5pm, sometimes off again from 8pm to 12am or stays thru the night, what of if i up it to 2, 300w poly pv? Or 4units of 150w?

Just add one more 200w same brand as b4 and ur ok.

200w x 3=600w x 0.8 (where 0.2 is loss due various factors)=480w
480w x 6hrs=2880wh/day or 60% of batteries power sufficiently restored if at all u deplete it by 50% daily.

Remember 3 panels =27amps lower than ur 30A CC which is safe.

Thus ur setup will effectively bridge the gap of no grid. Mind u, the grid equally cycle ur batteries too.

However, u may which to expanded gradually by buy 300w for keep till ur ready. Personally I prefer 2 150w to a single 300w, don't ask me why.

efuro:


Just add one more 200w same brand as b4 and ur ok.

200w x 3=600w x 0.8 (where 0.2 is loss due various factors)=480w
480w x 6hrs=2880wh/day or 60% of batteries power sufficiently restored if at all u deplete it by 50% daily.

Remember 3 panels =27amps lower than ur 30A CC which is safe.

Thus ur setup will effectively bridge the gap of no grid. Mind u, the grid equally cycle ur batteries too.

However, u may which to expanded gradually by buy 300w for keep till ur ready. Personally I prefer 2 150w to a single 300w, don't ask me why.

I am asking Why? Ain't we democratic men?

Apipia:

I am asking Why? Ain't we democratic men?

To enrich urself pls Read this thread. I gained a lot from it

https://www.nairaland.com/390522/solar-energy-complement-fta/297#61473643

Nice thread, I have same thing similar but 2kva thinking of adding solar to it but heard that if u are not careful the overcharging or undercharginging can kill d batteries faster interested in best c.c to use and panel either mono or poly

CLASSMAN:
Nice thread, I have same thing similar but 2kva thinking of adding solar to it but heard that if u are not careful the overcharging or undercharginging can kill d batteries faster interested in best c.c to use and panel either mono or poly

Am happy you asked.
The question can better be answered by urself, how deep ur pocket is. U have cc of 5k and dat of 500k plus. Same with panels. The previous fine line btw dem has greatly faded out in production wise. In fact I have equal no. Of both ( 6 mono -6 poly of 150w) & my poly is producing more. However, some believe mono will out live poly possibly before or after 25yrs

For a small unit like yours, u can buy few mono but for large scale like 5kw & > poly will do the job.

I also believe every solar setup is unique irrespective of design flaws.
I wish you a stress free upgrade experience.

I bought a hybrid 5kva 48vdc with 60-80amps inbuilt mmpt charger, do my system require another external mmpt charger? My intended system setup requires 8 12vdc 210ah gel battery, 10 300w 24vdc mono solar panels. I want to use poly, the installer condemned it, but with poly i can have some money back in my pocket.,i questioned the need for external solar charging controller which crept in 190k into my budget, he said the system will fail. Lived a little outside rhe country, most hybrid inverter are not attached external mmpt. Connection comes from solar pv to solar input, public power grid to its input, most times no batteries, cos power rarely failed, this setup is just to have day energy saving cost, at dawn the inverter switches over to power grid
Why this insistence on external mppt and mono?.

Apipia:
I bought a hybrid 5kva 48vdc with 60-80amps inbuilt mmpt charger, do my system require another external mmpt charger? My intended system setup requires 8 12vdc 210ah gel battery, 10 300w 24vdc mono solar panels. I want to use poly, the installer condemned it, but with poly i can have some money back in my pocket.,i questioned the need for external solar charging controller which crept in 190k into my budget, he said the system will fail. Lived a little outside rhe country, most hybrid inverter are not attached external mmpt. Connection comes from solar pv to solar input, public power grid to its input, most times no batteries, cos power rarely failed, this setup is just to have day energy saving cost, at dawn the inverter switches over to power grid
Why this insistence on external mppt and mono?.

No clear cut btw mono & poly poly nowadays. In fact my poly fires more juice than mono.
If money is not the issue, mono is better due to its purity and may depreciate less & last a bit longer.
I wonder why u need mppt when you have no batteries. Being grid tied you can get back ur credits after necessary approval. SMA Inverters are good in that regards.

efuro:


No clear cut btw mono & poly poly nowadays. In fact my poly fires more juice than mono.
If money is not the issue, mono is better due to its purity and may depreciate less & last a bit longer.
I wonder why u need mppt when you have no batteries. Being grid tied you can get back ur credits after necessary approval. SMA Inverters are good in that regards.

My system as i earlier wrote will have eight batteries. My inverter MUST comes with an inbuilt 80amps mppt charger.My bones with the would be installer, why is he insisting that another 90amps Epsolar external mppt charger will also be installed , My question is do i need to buy an external charger when the inverter i bought comes with its own inbuilt inverter

Apipia:

My system as i earlier wrote will have eight batteries. My inverter MUST comes with an inbuilt 80amps mppt charger.My bones with the would be installer, why is he insisting that another 90amps Epsolar external mppt charger will also be installed , My question is do i need to buy an external charger when the inverter i bought comes with its own inbuilt inverter

Are sure the inverter charger is not the normal inverter charging with grid/gen?

Will it do continuous sweeping d external charger does. There alot reasons to get external charger wen you can afford it

efuro:


Are sure the inverter charger is not the normal inverter charging with grid/gen?

Will it do continuous sweeping d external charger does. There alot reasons to get external charger wen you can afford it

Thanks for your efforts to help, i queried the manufacturer, if the hybrid inverter requires external mppt charger? The categorically stated NO. Though i bought it, not in the country, fortunately the sent their country rep to handle the installation when i am ready, and went ahead to send this diagram as a guide on DIY