₦airaland Forum

Queed:
That was why I said,

"Your inverter is most likely turned on / connected to a power source (the battery)."

It's still connected to a power (battery) source even when switched off those switches (Most likely MOSFETs) can still falsely come on.

The battery is not the primary source for a controller, current is supposed to flow from panel to the battery and not the other way round. The switches being short circuited are on the panel side.

Okay.
All this our many speculation

You do electronics?

Queed:
The basic characteristics nature of every controller and inverter, is to perform voltage and current conversation and as regards the purpose (being a controller or an inverter), they have different configuration / topology of achieving such conversation.

To make my argument simple and less technical, and since most of us are well aware that inverters / charge controller are all glorified power converters (DC-dc or dc-ac or whatever), I will assume that for majority of these inverters / controller, they have internally, two groups of switches, of which one, and only one group must be switched on at any time. If for any reason both are on at same time.. big bang. This timing is usually controlled by an MCU (typically) connected via 'drivers'. You don't necessarily need a direct hit to make them miss calculate, just EM radiation from nearby strike can make some lose focus and most probably hang!! The MCU can hang leaving both groups of switches on! (That's why you'll need a reset for those that survived and can't self reset).

1. Lighting usually strike at night (controller is not charging, even if both switch are forced to turn on, no power from solar that will make them blow up).
Your inverter is most likely turned on / connected to a power source (the battery).

2. Even if strikes occurred during the day time, Most controller are designed to shut cct the panel to find the Maximum point, so the the two groups switches coming on at same time might survive the current rush (and it's usually not sunny when it rains).

3. All my assumptions are base on non direct hit by lightning oo. I am not sure that even the so called branded names will survive a direct hit! (Controller and inverter inclusive).

PS: just my theories.

I agree with all except the battery part
(Cc and inverter are both connected to the battery. In situations where inverter self is not working, it still used to be affected by lightning)

bassdow:
charge controllers most deals with DC current + not as exposed as inverters because internal circuitry of the charge controller has been designed to quickly shutOff when surge is detected wether from failure or from lightening.

Also Lightening mostly affects things having more conductors in them and by look of things, an inverter has much more better conductors in them than a charge controller

I don't think this is why.

The question is how come is controller MCU architecture more protected (even in thunder strike, you don't need to reset it).

Aside from drivers flashing (this is probably as a result of over voltage) Na that MCU be the main thing

dollarnaira:
Begging for answer

I am trying to understand it too.

Though CC has a way different architecture from an inverter.
A cc is just a simple buck converter with a microcontroller to control its Charging algorithm and stages.

How ever inverter microcontroller has to generate the pure sine wave signal (a lot of computation is going on in the controller so small interruption, e don forget).

Mind you, DSP inverter technology are changing, we use to have inverters that made hissing sound while working ( it is not modified) but now they are quite.

So this are things person needs to study

mvphenryeto5:
Why is it that lighten don't spoil Cc it's only inverters they affect

You are already thinking about what I have been thinking

Hero2t:
What brands, please?

E no get name oh.
Na cut and join.

The transformer and casing is genus.
Board is gks Abi GSK.

I will post the board picture when I find it.

I have been studying this stuff for some time now. I

swagifted:
we wey de stay for rented houses no even sabi the kind weda dem even earth the house well.

More reason you should buy what can easily be fixed.

Them no dey tell you until e get wahala.

Do you know there are some inverters, when lightening strikes them, a simple resetting solves the problem.

I don't seem to understand how come some can withstand while others cannot .
We get one at a clients place, them no gree collect their own back

Yesterday Sunday, we where active at abule oshun Lagos where we where installing 1330wp of PV.

Structure was a 2 storey building (we used scaffold for this) the structure was above 45ft. So ladder was a no go area.

I don't have much information on the internals, my duty was just to oversee the PV installation and dropping off the Wire.

This are the few images we where able to capture .

We are still available and active in warri and Lagos

swagifted:
omo which kind of fear be this now.

On this thread no body talks about it.

You will hear buy premium gadgets.
Even premium dey suffer and Na your pocket e go hear am.

By the way am not putting fear in anybody mind, it just a reminder that buy/go for products that the parts can be replaced

jamess32:
please what can I do in a situation like this

Try amount CC.

As you are planning to buy hybrid, plan for a good protection systems (earthing in particular).
Repair of those equipment is expensive.

Small lighten strike, office will just open

dbshaywhy:
Thanks for your input... Am not always at always during the day from Monday to Saturday, except Sundays.
With my rough calculations, instantaneous load in the when back can never exceed 360w, while over the night, 80w with century rechargeable fan(mains will be on wen notice its getting low)

My budget 2.2M

This your budget .

You could have stated this first so @jonescosmos no for dey call big names

samistry:
Minor accessories like phones. How much is it for solar kit?

You can get for as low as 150k the higher the back up the more it will cost

saysoo:
8 to 10 hours.

When are you running it day or night

One of this ekuke suppose don ripe today Na Sunday, which one we go use see front

dacool1:
2 ceiling fans!! How many watts each? A TV 2laptops simultaneously.

Hmm just like I said earlier get ready to replace your battery soon of you power all these appliances after sundown.

And you need to add the next battery within the next 3 months or so.

As per the charge current, I wasn't referring to over charge but over current and your battery will most likely swell or explode at some point because when there's no load and there's good sunlight, your charger would be sending over 50amps into the battery.

Just prepare to replace your battery soon it might not last 6months.

Plus the best you will get after sun down is 4hrs power supply if you power on your fans before hitting 50% DOD

What is the function of a charge controller?

I don't think this is true

mikeayus:
I no buy charger for charging from grid ooh, I felt the solar charging will be sufficient already

Okay

mikeayus:
Hello guys,

I am a DIY Solar user to be and I have bought the following Items for my setup.

1) 2 550W Jinko Solar Panels (TechLand Solar)
2) 12v 3000w EASun Inverter From a fellow Nairalander
3) 12v 200A Battery Full River From Idyllic Tech.
4) 120A MPPT Charge Controller From Gennex Technologies


Now, I need advise on every other thing I need to get to have my setup up and running (Cables, Change Over, other accessories etc. ).

I would appreciate every tip and learnings from you all. Thanks

You no buy charger for Nepa charging?
You will need breaker or fuse , your load is what would determine the changeover(100A will do), trunks, breaker housing, surge, cable lugs, mounting rails and assembly this is what I can remember

mikeayus:
Uhmm,....well understood...Thank you

@Obnoxious2001 are you an installer or can you recommend any in lagos?

I am that I am Na money dey determine who I can become .

Am in Lagos now.

mikeayus:
Hello guys,

I am a DIY Solar user to be and I have bought the following Items for my setup.

1) 2 550W Jinko Solar Panels (TechLand Solar)
2) 12v 3000w EASun Inverter From a fellow Nairalander
3) 12v 200A Battery Full River From Idyllic Tech.
4) 120A MPPT Charge Controller From Gennex Technologies


Now, I need advise on every other thing I need to get to have my setup up and running (Cables, Change Over, other accessories etc. ).

I would appreciate every tip and learnings from you all. Thanks

E go make sense you leave this part for the installer.
Because there are so many shenanigans in this aspect.
This week Na person I help solve this case.
Better still is to hire an someone to follow you.

saysoo:
Guys please I need a quotation (cost)
for a complete solar components that can power a 2hp compressor off grid.

How long do you want it running?

samistry:
I asked a contact for market survey on connection that will power 2 rechargeable fans, a laptop and minor accessories.
Please is this amount correct?

What are the minor accessories?
This quote doesn't look minor. If it those rechargeable fan, laptop the smart solar kit is your best bet.

Jestin:
This country is gone ooo. I didn’t know it was this worse . Bought bag of Dangote cement 12k per bag yesterday

You get mind go even buy 1 bag??

I thought we all agreed to wait till the price came down .

Besides buying land now is the least of Nigerians problem.
As you say make you develop am....
Omo

jamess32:
Good day to everyone here, please I need help on my diy , I need help on my solar set up, I have a panel with the following data sheet.
Rated max power 190w
Current at pmax 5.18A
Voltage at pmax 36.7v
Short circuit current 5.6A
Open circuit voltage 44.8v

Cell type ; mono
Maximum system voltage 1000v

and a mpw charge controller with the following data sheet;
Rated voltage: 12/24
Rated current: 30A
Maximum PV voltage: 50V

I have 12/ 75ah battery connected to the charge controller with hope of using the panel to charge, what I observed was that when the sun is at peak the battery indicator on the controller shows full bar and voltage increases up to 17v on the controller. recently I forgot to manually disengage the charging after about 7hr and when I remembered I discovered the battery has swollen, though still working.
please is there anything wrong with my connection? how do I prevent the charge controller from overcharging the battery without me disengaging it manually? did I need to make any adjustment, kindly help pls.

The cc is not regulating properly, because I see no reason why a 30A PWM can't control and monitor the charging

Jirilistic:
Good morning all, my inverter refused to charge yesterday immediately nepa brought light.
There was no light in one of the nepa line so I changed to another phase and there was light

I suddenly heard a kind of alarm sound coming from the inverter and when I went to check, it wasn't charging. Only the indicator on the body of the inverter for when there's nepa light was displaying.

Pls any idea of what could have happened below is the model of the inverter and also the charge controller I'm using


I

If mains is available, does it blink charging?

The fault can be anything.
Just be sure the inverter can still invert.

icjunior:
Be like Gennex dey here o

The guy don reduce the jinko prices😁
10-11k difference from fouani.

Lol.
Make him price no go push am out of market

bassdow:
NO

if you check, you see the columns have headers titled "Application" , "Charging Voltage" , "initial Current"

and that your 80Amps falls under "initial Current". Now that means you shouldn't draw more than 80Amps at a time during cycle use.

if you want to identify the charging current, just look for a word that starts with letter C followed by 2-digits and if you look on the battery body, you would see C10 . Now that's the charge current.

Now, you really don't need those information to successful charge such battery when using a charge Controller or even a reputable charger because they do have charging profiles where you select the battery type.

My oga am loyal sir.
But you seem to be mistaken the C10 on the battery.

Let's also remember we have C20.
And 0.25c written on some batteries

tsnoop:
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It’s pure undiluted original honey

You know honey as lots of benefits

You need a bottle of honey at home

Contact me 07033870556

Location Ijaiye Lagos but can get it deliver to you anywhere in Nigeria

Surulere?

Tover:
Are you trying to say a 3kva (3000 watts) sachet inverter will power my fridge in the afternoon without any problems
3000 watts sachet inverter vs 1.5kva pure sine wave inverter which one is more better for my 3 bed room apartment

1.5kva transformer based pure sine wave inverter definitely

kristien4:
Pls bosses in the house, Does the inscription on this AGM battery mean it can be charged at 80Amps??

What battery is this

lovediehatelive:
Please does charging phone with charge controller affect the phone?

Does it spoil phone?

Any input or experience.

I'll just use the USB port and put cord.


The image attached is the type of charge controller.
Thanks

No it doesn't

Tover:
Thanks bro ...what about 1.5kva ..hope it can power my fridge without any problems only in the afternoon when I am not at home

If you want to use a sachet inverter, 3kva is your best bet