₦airaland Forum

pdozie:
Am not sure if Morningstar displays incoming and outgoing values.
The figures I quoted are what is displayed, it doesn't indicate if it's IN or OUT.
Presently this is what the CC reads

1134W
3760WH
52V
21.2A

@dapsyra the 25a is output

dapsyra:
It depends on where he is looking.

On the input side, based of his 3x3 arrangement, he will never see 25A. The highest he will probably see is about 20A.

But on the output side, at peak periods, he will see values above 40A.

I believe he meant output bro. but he can clarify

dapsyra:
Your CC has two sections, the input and the output sections.

The input section is that part that you connected to the solar panel while the output section is the part connected to the battery.

You are looking at the maximum current on the input section which is usually lower than the current in the output section. A MPPT controller will step down the voltage from the panel to match the battery and increase the current proportionally in accordance to the laws of conservation of energy.

In your case, maximum power available is 9*260W=2340W

The MPPT voltage of your panel is 260/8.1=32V

3 panels in series will then give 32.1*3=96.3V

3 panels in parallel will give 8.1*3=24.3A

So, in the input section the MPPT parameters are: 96.3V, 24.3A, 2340W

Now lets look at the output section.

If you have a 12V battery setup, the in-coming 96.3V gets stepped down to 12V and the 24.3A current will be increased proportionally. So the output current will be 24.3*96.3/12=195A. So require a CC that can handle 200A

If you have a 24V battery setup the in-coming 96.3V gets stepped down to 24V and the 24.3A current will be increased proportionally. So the output current will be 24.3*96.3/24=97.5A So require a CC that can handle 100A

If you have a 48V battery setup the in-coming 96.3V gets stepped down to 48V and the 24.3A current will be increased proportionally. So the output current will be 24.3*96.3/48=48.8A So require a CC that can handle 50A.

Adding another string of 3*260w panels to the setup will increase the power to 3,120W, hereby pushing up the CC requirement by 33%. This will exceed the capacity of a 45A CC even at 48V nominal battery. Hence the smoke.

The CC did not smoke earlier because of inherent power losses and conversion inefficiency that will not allow the panels and CC to operate at 100% efficiency.

please note, he has never seen 25a on the said 260w*9 on 48v system

pdozie:
Got the watt meter yesterday. Very interesting recording my readings. One 'small' TV the kids use often read 137W while the big one I usually chase them away from read 78W !!

The freezer starts with 326W but goes down to 240W in less than 10 seconds.
The sowing machines my wife run starts with 576W and goes down to 132W steadily.

For the devices that start high and then normalizes at Low watts, what is the advised time to operate them. Because of the high power the draw at startup, will be advised to still put them on inverter when sun is getting down - say 4 to 5pm? (Even though they operate at much lower Watt after start up)

Meanwhile, if anyone has a spare 40 to 45A MPPT controller 48v, kindly buzz me. Got new panels to add but my controller has maxed out

Cheers

the freezer has been running for it to start with only 326w, for you to know the actual startup current leave it for 1hr. I hope you don't run this huge load on batteries alone at night? got 70a fangpusun at a give away price. Just call for further discussion

abunafiu:
For over a week now.
Ilorin sun has been smiling at me. My daily harvest is now 14 to 15.5kwh daily with my 4kw @250w poly panels.
2 weeks ago, I will shout if I hit 12kwh. I almost felt my panels are going down.

Saipro how far ur side?

Finally ve united my Trojans. Back to 48v set up now.
So I now discharge gently.
Since I am 100% off grid. Saving for additional 1kw to hit 5kw PV strength.
After then start saving for battery replacement.
Not sure if I would love to have a repeated flooded experience.
What about you?

bros no be me and flooded again oh

Razael23:
i'm having issues funding my aliexpress pocket, it keeps bring up "insufficient fund in your account" error, and i have enuff money in my account. pls can someone help me out wit a solution to dis issue.

wait for gtb to reset the counter

tundebabzy:
OK. I knew LED don't consume as much power as LCD. I just got confused at the 400k estimate for 40"Tv. But honestly, I didn't know LED TV consume as low as 25w. Their spec sheets usually say something around 50w. This is really good to know and my LCD will definitely be the next to go.

no 40' 4k smart TV is less than 400k, even ordinary FHD smart 40' TV is more than 200k. You can get ordinary FHD led around 150k or higher if you prefer that or just buy HD led which is what you get in most stores. But be sure you don't buy led with lcd back-lit or edge-lit which will consume more. For me I may likely not go for bigger screen cos bigger screen means more power. My friends 50' 4k smart consumes 30w

earthrealm:
On gen or inverter mode..it consumes 50% power and outputs 70% cooling capacity

yes I can confirm that. Around 600w on inverter mode, still high though

Trippledots:
how can one get it?

I will update everyone when available

DUNKA:
OK any customer feedback as to reliability and efficiency?

you still need review from costumers bros?Well I stalled few for costumers but I can give a better review than my costumers cos I currently use 2pcs. I have used it for 5 months now. Fan works for 18 hrs every day, Monday to Friday and from Friday evening to Monday morning except 3 hrs break on Sunday morning for service. The issues with the fan is 1. Is a dc fan meaning the motor is dc, (adapter is needed) your existing connection will not work with it. You need to do a fresh wiring to get it work. 2. If fan was running and light goes off and on you must start the fan again. 3. Fan consumes around 35w at highest. These are the issues with the fan. The interesting part is the speed of number 2&3 is awesome, you don't need number 5. It also has a remote control, meaning you can power it anywhere around the room even from your bed

DUNKA:
kindly advise brand name of advertised ceiling fans?

no name for now, is a costumised fan

DMerciful:
My Oga them...Chris81964, Judo, Efuro, kiekie1 .....
Can we bring 500W affordable AC units to this forum?

500w is at the high side, I saw one on net with 200w/24v dc compressor. Shipping it to Nigeria is the issue cos they are heavy

chris81964:
I have the Qasa wall fans what did you replace them with. We run three all day.

more efficient one bros

anochuks08:
Ceiling or Standing? 13w on mid is good. Am working towards changing my fans, all 6 of them. So am researching for something very efficient.

ceiling fan 56'

anochuks08:
What's the name of the fan you use sir? am interested. Mine is 30w on Low, 45w on highest

I was using qasa 56' but the 20w consumption on mid was too high for me and it doesn't push air the way I wanted so I had to change it to something better 13w on mid air is awesome

Trippledots:
where can these be got pls?

But I advertised these fans on this forum, none showed interest. Any way qasa is good the price is between 20-30k. Consumption is 14w on low and 28w on high. Mine is 5w on low and 32w on high. Another model with remote control is 9w on low and 38w on high. Out of stock. Think of how many fans you will power with 100w if each is consuming 12w?. I see no reason for huge battery bank, solution is here already. Believe me a 3 bed room flat can use just 2pcs of 150ah batteries and 1500w solar panels with energy efficient devices and your batteries can do over 3yrs. Just imagine 4 ceiling fans consuming 15w each, TV 40' 30w, led bulbs 8pcs 5w each, fridge 120w 8am-4pm daily. With this your night consumption will never exceed 1800kwh which can be replenished by the array before 11am, the rest goes to the fridge and float your batteries before 3pm. Sounds interesting right? Now the real breakdown of the energy efficient devices: TV 40' 400k, fridge 200k, ceiling fan 30k, led bulbs bright ones N1500. Finish the calculation. I don try

Barezzi:
I fully agree with you. One of my next goals is to take the security lights off the battery.
Next will be to replace my fans. I run two and they consume 135w each.
I average 500w throughout the night. I'd like to get it down to 200w. Which is cheaper? Increase my battery Bank or replace energy guzzling loads??

replace energy guzzling loads, there are ceiling fan of 5w-28w, standing fan of 14w-35w. Energy saving bulbs (led) of 5w-18w. For security lights I will advise flood light of 20w-30w. These can cut down your consumption to 3-4kwh at night

Barezzi:
I'll monitor it when i get back home. Grid supply is usually stable at night, so battery is usually fully charged by daybreak.
If i remember correctly, my night time usage is usually 6 to 9kwh

bros 6-9kwh at night is still high. Is there no way you can cut down consumption at night? Just thinking of the battery cost though. With this I doubt they will do 3yrs

wheezyoung:
Pls...who can help..i keep getting this error when i try funding my pocket

sorry student account is restricted, you can't do international transaction unless you provide a valid or government id card

chikkaobi:
Here is the picture of the CC working. Couldn't get the load A, because my inverter is connected directly to the battery.
Though I watched some video on youtube which stat that the CC is just a rip-off, because it doesn't have an Inductor, and would waste energy.
Any Idea the effect it might have on the battery?
If it isn't good, I will be ok if you could suggest a CC.

you need an mppt. 15a fangpusun 25k if interested

Penuelseun:
Good morning my ogas, I want to power a signboard with 5 energy saving bulbs with a solar powered inverter that will switch on at 7pm & off at 6am, I also want it to be automatic, pls how do I go about it, i.e list of the things I will need. Thanks

you don't need inverter. Just get dc bulbs, cc with dc load or digital timer, you are done

cooldipo:
Pls we need more contributions to this issue of limit pose by charge controller rating. In my case, I have a 12V inverter set up and a 30A Epever Tracer charger controller with 3 units of 150watt mono panels. The Max Pv input power is 390watt(12volts) 780watt(24volts) for the cc..... I was tempted to add one more panel even though the Maximum Power current is about 8.5A per panel. I wanted one more panel if 150watt for obvious reasons......bountiful harvest on days with less solar radiation which my supplier gave a nod to but my installer here gave me the scare that I run the risk of blowing up my cc with the extra/over current...... Pls help me out with informed opinion. Thanks

nothing will happen to your cc. I have used 900w on the same cc on 12v. The only advice I have for you is to modify the cooling system

juliustip:
Thanks for all the suggestions.
To be more detailed;

Solar Panels: 230w *4
Inverter: 2kva
Battery: 200AH
CC: 20A 12v/24v (Model: CM20D)

Loads: Within 700~1000w daily

Duration on off-grid: 3years
Battery Change: Thrice (once every year)

This was installed to test the efficiency of the system, before moving to a bigger version.
For a bigger version, batteries price could be going upto 1.5m yearly.
I see people saying they've been using their batteries for 2 years.
That made me come to conclusion, something is wrong and needs a fix.

My initial plan on upgrade when dollar was ok was to go for Telsa Powerwall (Tesla stats 10years warranty)
But seem that isn't an option at the moment.


I will appreciate any help that can specify what I need to change in this setup.

your panels are way too small for an off grid system, your load is too much. Your
Charge controller must be changed. In fact you are off grid on batteries. I have seen an off grid system running for 2 years without a battery change. Please upgrade your panels and charge controller. It will be nearly impossible for you to consume only 700-1000w daily. Are you aware only one 56' ceiling fan will consume over 700w in 12 hrs

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bigrovar:
43 inch led TV, dstv, 2 fan and 4 lighting point all for less than 107w. Battery being discharged at less than C40 (c55 to be exact) less stress on the battery mean they last longer.

Interestingly the 32 inch LCD TV in my room uses 84w (about 80% of above load) and ceiling fan uses about 75w ... Efficiency should never be understated.

hahahah
I think my bros Abu killed his batteries with load.
Check mine out, 1 led tv 32", 1 decoder, 2 energy efficient ceiling fan. 2 led bulb

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still on

abunafiu:
Installed 8 units of J185 Trojans in August 2014, yesterday had to retire 4 of them. 3 were reading below 10v on on load. Despite regular maintenance and equalisation.
How is it on the other side?.
This flooded whaala Don dey pass my power Oo.

sorry sir. Initially you were using 900w to charge the battery. I think you allowed the batteries to stay under-charged for a very long time. Got mine may 2014 almost the same time with yours but they are still performing like new

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DMerciful:
Not battery failure....fan failure(sometimes bearing become defective, switching power supply inside fails, stopped rotating...crazy)

contact me for energy efficient ceiling fan 56', dc and ac compatible. 5w on low and 35w on high. Price 20k. Model With remote 7w on low and 40w on high price N23k

In fact