₦airaland Forum

osayuwamwen:
Pls i need quotation of 1kva solar system, that can conveniently carry my inverter refrigerator with rated current of 100watt during the day and still charges the battery to be use at night for just 55watt led TV and 8 energy saving bulb of 6watt each and a 18inch qasa DC fan. Pls note that my refrigerator is a Samsung inverter refrigerator of rated input of 100watt, I want the refrigerator to work like 6 to 7hrs during the day while i use the battery at night for the listed item above

Make the inverter 1.5kva, it's better this way.

Peterlove11:
Immediately after reading this, had to go and check under my inverter if their is any rust because it's directly installed over my batteries(tubular). No rust for now. Well will look into this.

How long have you used it this way?
Tubular, noooo. Enough gases we inhale already. I can not come and kill myself.

mctfopt:
Go Jinko, PVs are so good. In no distant future, I foresee the "Canadian solar treatment". People buying junk and sticking a Jinko solar tape on it.

It has started my brother, saw some at Alaba recently, for they are many.

Namzy:
Also max voltage is different from working voltage range. I've seen some mppt at 450v.

My point exactly.

isangjohnson:
I've not checked the voltage range in the manual yet but if it's in that range, do you suggest I should go for 10S1P in order to arrive at 493V and 94A?
Mppt max charge current is 100A.
12pcs/6S2P is 113A.
I think few losses from 10mm cables could bring it down to probably 93A.
I've done 84A with 60A CC max charging current and 3S3P x 49.3Voc = 148V going into Max Mppt CC of 150Vdc with 6mm cables before. I was relaxed because I knew there would be greater loss due to the 6mm cables.

First thing first, check your mppt voltage range before taking suggestions. Plz do this first.

olaolu11:
Greetings house.
Please I need advice for what to get for a shop on low budget. Load is,

60 watts oscillating fan
40(4×10) watts bulbs
100 watts(not sure) tv
Personal phone charging (5 pieces).
All will be on for duration 8.00am to 7.00 pm daily.

Will these items do the work?
100 watts panel
10a pwm charge controller
40ah lead acid battery
300a msw inverter.
As an unrepentant DIYer, I am setting it up myself
Thank you.

PS: If I opt for li-on battery, it will be like how much for it?

Hope I read this post well?

AinsSama:
Maker is Sunfield. Same manufacturer as the panels.

With a 150v voc, do 3 in series.

You can see that your 4panels in total is grossly inadequate! As pointed out by @earthrealm, all he mentioned are valid. 10kva has a lot standby consumption! I will do a minimum minimum of 9 of 350w panels. I prefer 12 minimum anyway. 4 batteries can never cut it.

toyeoye:
Na advice be this or you're making jest of him? I hail o

My brother, you think I am making jest of him? I was very angry with the post! Do you think that even with his stated budget, such money is easy to come by with the current state of Nigeria's economy? If u have a cut cost mentality in solar, u loose every penny spent in months.

emmy9500:
My oga, please ignore the cost cutting

As much as I wan cut cost, I also need durability even if it will cost more….. durability always pays in the long run

Which charge controller do you advice I get

Better, you are now talking my language. If anyone wants to do solar, one basic thing is: how do I get it right! Ignoring this is a very big disaster on your part.

Since you are using a 24 volts system. Kindly get a fangpusun 50a mppt or Epever 40a mppt(no 50a). Stay away from PWM, except u really know what you are doing.

emmy9500:
Good day my ogas , I got quotations for a 3.5kva inverter setup, I want to ask if it’s good to go and it’s their way I can cut cost?

Would love your inputs

Lol with such a budget/materials already!!! My oga you don cut enough!!

I will not use that controller anyway. I should advise you to get a better charge controller, but I will be restricted to do so. Cos, you are looking for how to cut costs.

You want to spend 340k on batteries and you intend to kill it with a 30k controller? Nà wà ó

AinsSama:
PS: I'm not DIYing, but hiring some engineers who have just a little bit of experience in solar installations. Hence the questions.

What are the specs of the charge controller and also the name/maker?

You will see the specs on the container or inside the manual.

jonescosmo:
BMS for Lead Acid Battery Functions:

Main functions of the BMS for lead acid battery include: monitoring battery thermal runaway, open circuit, string insulation, cell electrolyte leakage, CDF discharge transient characteristic, string voltage, charge/discharge current, float current, cell voltage, cell internal resistance, cell temperature, ambient temperature and intelligent balance and estimating SOC/SOH, etc. The device automatically alarms when any parameter exceeds the alarm threshold.


Battery status monitoring and early warning: the lead acid battery management system monitors cell voltage, cell temperature and cell internal resistance real time on-line. The active battery management system carries out intelligent analysis of the thermal runaway trend of the battery, and issues early warning in time to prevent the battery into thermal runaway and protect the battery pack effectively


Battery string status monitoring: the 12v lead acid battery management system collects string voltage, charge and discharge current. It can effectively monitor the CDF phenomenon, directly display the float current and ambient temperature, and the current state of the battery, as well as help estimate battery status of charge (SOC) and health (SOH) in a high-accuracy way.

Copied!!!

BMS for Lead acid can only be effective when it is connected at the cell level (2 V) and not at the battery level (12 V).
Do not waste money on it. The best way to do lead acid battery is going thru the cell route (buying 2 V and connecting them in series).

Nerob:
He should have just left the house for her!

He can't, cos he never and can never build one.

Women should know the kind of crazy men they want to get married to, likewise men too. Lazy people are just too many.

Drgreatone:
DIY experts, need ur help here. Just tried connecting my inverter to the mains. The main changeover is for Nepa(up) and Gen/Inverter (down). The knife switch below is to swap between Gen(left) and Inverter(right). The circuit breaker is between the load input from the changeover and charging point for the inverter. This load input is connected to both phcn and gen so any available would charge the inverter. Issue i have now is anytime i want to use the inverter alone, I have to switch the circuit breaker off or else it wud make noise showing short circuit on its screen. This means If PHCN supplies light, it wont charge until I switch back to PHCN. What can i do to fix this? Thanks

Pls for God's sake, look for someone qualified to do this job for you. Why are you risking your life to save how much exactly? Though "experts" will put you through, good luck.

Kabawhat:
I bought 4* 100 ah sealed lead acid battery for my uncle although he has been using the battery for almost a year before selling it to me to buy tubular batteries, since I got the battery for more than 6 month I was not able to buy solar panel and other necessary material to set it up due some reason, now I notice some white stuff around the top side battery container, abegi what are the changes that this buy are not weak

Am planning to solar panels(4*200w) and 60a mppt controller this month

Battery(ies) should be the last component to buy in solar(especially lead acid).
Used lead acid battery is not, most of the time a good buy. Those batteries are already on a decline.

Habayomie:
Hello house,..pls how can I know the diameter of this dish?.

measure it

toyeoye:
Good morning. What do you think about this setup for 5kva.
Just your honest thoughts , thank you very much

This should be a 24v system, right?

Note: everything about this list is wrong.

GeorgeD1:
Brother, i use my motorised 3.2m to track and always finetune for max signals.
Anyway, tanx for the info.
Break the myth!

I thought you have 4.5 m dish?

ceaser:


If a doctor would stick to medicine and a lawyer to law, then what is about the concept of being a DIY enthusiast?

Because if the bolded statement is to be strictly followed, aswear ńa to dey call @ Oshomo12 every time I need things done on my setup.

To be serious though, I believe the op learnt the hard way. He was in such a hurry that he didn't ask questions on changing his panel config here before taking that step of increasing panel voltages to 48v config when his inverter is 24v, especially when he has been told that his CC is PWM falsely labelled as MPPT.



Few days ago, had a mechanic work to replace a stripped alternator belt that made battery charging poor. After office hours and tired from the day's work, I just paid him, jumped into the car and drove off.

25 kilometers later and rather too late, I noticed the temp gauge had almost risen to max and steam coming out from under the hood so I interrupted the trip to allow for cooling. Reason for this nonsense is that the mecho had pulled off the plug supply to the radiator fan and so I reconnected it. Refilling the radiator, I noticed the gasket was blown already.

So much for a 15 minutes change of alternator belt.

For all that have responded to my message, I appreciate it and your line of thought. But all stated and pointing to one major part, YOU GUYS KNOW ABOUT THIS STUFF, no matter how little. BUT op touched what could burn down a house, he knows nothing about this thing, that's my point. Well it is well, even inside the well.

gadgetplanetng:
With the way the average professionals behave it's better we learn.

I know what I went through in the hands of "expert" mechanics till I started learning about cars.

Same thing with solar.

If we stopped trying after falling the first time learning to walk as babies we won't ever walk.

He made a mistake, let him learn.

A professional probably suggested that "mppt" for him.

Fire started by electrical, dc/ac, God forbid, can be unstoppable.

If you are a lawyer, stick to the law, doctor, stick to medicine, and most especially if you don't know anything about electricity, dc/ac, stay clear of solar DIY. If you don't love yourself, don't risk the life of your loved ones. How much do you think you are saving by touching what you have no idea of? That was a very expensive mistake.
Well, life is so cheap in Nigeria.

EPOMA:
The way we call money these days in Nigeria is scary.

As a person o, will not sell used lead acid batteries no matter how good the products are, especially 12v. Even if I will sell used lead acid, I will give it out at a price that when they failed, u won't have the mind to call me.

sethtsadopp:
Almost everyone I know using Solar has been complaining about the weather. I say let me come and ask how you guys here are coping (especially those off grid) ? Are you guys supplementing with generator? Do you haave oversized panels? Asking so I know how to plan ahead do such seasons.

I am totally off-grid, it has not been easy. My gen has only worked for 3hrs, 2days ago. I don't have an oversized array, 1.6kw for now. But my freezer does 6hrs for now, from 9hrs before. My panels (Trina and Yingli) produce their peaks with any little opportunity of bright sky, not sunny o. To do solar, u need backup gen, this is the period my gen works, after this period, it goes back to sleep for another season.

ojeysky:
Not just that, quality panels will be revealed in this period

My brother, you have said it up to 80%, not all this "flamesly" panels.

ojeysky:
That inverter is looking bigger than its capacity, perhaps it's just the way the picture was taken. Congratulations and welcome to renewable energy.

The inverter has a single dimension(form factor) for various capacities. Only the weight will differ

TechGeek777:
Like which products is good?

This may be a bit complicated, but let me list some, not in order of performance.
Trina, Jinko, Ja, Risen, Canadian, Lg, Yingli etc

Complicated: you may be offered the above, but are they original? You must get someone that will offer you the original brands o, AT A COST. They do not come cheap.
Any solar panel you see or hear about, just search for its presence online, they should have a site(not jiji, nairaland, or any other selling sites) that will tell you about their products.

SO MANY USELESS SOLAR PANELS ARE HERE NOW! They advertise them on this thread also, many of them. Be very careful fa.

uche393:
I saw this on Facebook, e really shock me o.

Is this installation here in Nigeria?

TechGeek777:
Thanks bro, words are not enough to for this deep explanation.

Take very good note of this, abeg, buy good solar panels o. or else all those writeups will turn to stories!

ojesymsym:
Hello guys, anyone knows how to wake up a lithium that has been left idle and unused for more than 5 years?

like Ojey said, what is the voltage on the Lithium cells?

IllRatherNotSay:
Fangpusun is the Chinese clone of Outback and other quality manufacturers. Basically, you'll get what you pay for.

Okay.

IllRatherNotSay:
fangpusun flexmax is not exactly quality charge controller.

Kindly share your experience with the controller, thank you.

Expertt:
Thanks for this information. Please give me insight in terms of rating, and available brands. My intention is to to buy an affordable protective devices and call a good installer to do the job

How do you buy what you don't know anything about?
Abrg, call someone who knows this thing and get it done.