₦airaland Forum

obitobe:
Please i need expert knowledge here, i have four 220ah tubular battery, i just noticed that when the battery is fully charge and i start using it for the night, @136w(5pm-10pm) and 98w ( 10pm -7am). i noticed that the battery will be 24.2v @2-3am then between 3-4am the battery voltage drops to 23.4v and this will get me to the morning. Recently i had to set the battery SOC from 50% to 70% because at 50% the battery goes off at 5-5:30am but at 70% it takes me till the morning. What could be causing the sharp drop in voltage.

With a battery monitor, i am getting this readings in the morning Batt 1: 11.95v Batt 2: 10.99v batt 3: 10.95v Batt 4: 11.94v

You need a battery balancer. If you can mix the the battery configuration again such that one high voltage battery is paired in parallel with a low voltage one.

Edrizz:
Recheck n confirm that the battery equaliser is installed correctly cos I don't see it performing it functions of equalising the battery voltage according to the voltages u shared earlier.... ordinarily you're not suppose to have any disparity between the battery voltages...

Mine has same issue as. Initially my batteries were balanced but after some months I noticed significant drift. Mixed up the batteries but same thing.

I fear I may have broken the equalizer during reconnection or I need to reset the equalizer.

Either way, my schedule hasn't allowed me to work on the bank again.

Ooreofegrace:
Update

Hello chief, gone there yesterday and did few of the things listed here... (Equalizer also changed the battery settings to flood on the inverter) .. Also went with felicity 60a cc sadly that one doesn't accept more than 145v but was still able to use it to charge cause of the poor weather although when the sun intensity increases, it started blinking the warning red light. Anyways that not where am going... what I noticed myself is that, the battery doesn't take more than 10mins before it runs from full charge to completely discharge which is from 25.+v to 21.8v. and also takes abt same mins (10mins) before it get full even to bulk and float level. Let me also call una attention to this, initially when i did the installation, they had two 100ah battery which i connected to it, after abt few days the batteries became so weak and dead. I was like maybe because they've been using those for going to 2yrs maybe that was why, then we got another one.. Brand new ones this time around two tubular batteries 12v 220ah then this issues again which am just so so confused ... I also noticed the battery will start decreasing just like a clock count down.. It doesn't back up at all ones the PV is been cut off.. Same thing the previous two 100ah did.. what is the way forward, what kind of solution can I use to tackle this problem pls.. Will be in the comment section... Thanks all..

Mixing of old and new battery is never a good idea.

REPT Cells

Daniel2802:
Can you confirm the exact cell manufacturer they use?

Ooreofegrace:
Actually, I don't think they are because i monitored it my self.. And according to the low and high volt I wrote above, that exactly what in the manual book as well... Was kind of expecting bulk charge at 29v or 28.+ but on the inverter and manual as well it is written 27v and 21.8 as low.. Reason why I said they don't use pass what is explained is, this ppl na my inlaw, Dr follow instructions like say his life depends on it... If you tell him not to on it all day self, he won't ask why since it your field, he will off it that him for you.. Now back to the problem, do you think the inverter could be affecting the batteries? Could it be that pumping machine affecting them..? Kindly not, the pump was only tested on the previous battery not run on them and them just went bad before this new ones.. Now this again..

My setup once again make una help me use Oju a gba wo abeg..(experience eye look am)
585w brand new jinko PV all connected in series x3
Welion 4.2kw hybrid invert with 120a cc
Then two 220ah tubular batteries.

Load.. Pumping machine 1HP
Inverter fridge/freezer.. At high 280w and when it start running it comes down to 80w at low.
Tv 32"led which is around 35w or there abt
Decoder.. Around 15w
Then DC bulb 5w btw 5 and 10pecs sah not sure..

Kindly note pump is used only when the intensity of the sun is high and na like 3 or 4 days interval. (they once share with me the clip when they on the pump, the PV took it up.. And the battery never left the bulk state. Pump was taking around 700w+ and the PV was bring down 900w+ and once the water is full and turned off the PV will come down to just 100w above what ever it is been drown from the inverter. It doesn't event touch the battery at all..

Tv.. This only comes up during the weekend..

Refrigerator is the only appliance that run on it from 8am to 5pm now i tell them to off by 3 since this issue came up.. Kindly note that even as at that 5pm they off it, the battery stage doesn't leave bulk state always full...

With all the listed above, what the way forward.. Contacted the battery seller alaye turned me for one side.. And this Instllation was done in May last mth..


Kindly note... I Hv customers that they run two 12v 220ah tubular with 24v system on pump for year with no issue.. So i don't belive that the issue pls.. One even use it along with his old fridge in his drug store.. But i always advise them to do so hen the sun is high.


Make una help me with solutions pls.. Should i take batteries to professional battery chargers for check up? What could be the cause of all this.. Pls i need solution bosses abeg 🙏 🙏 🙏 keep on seeing messages and WhatsApp calls from him asking for way forward always cut my mind 😔 😔 will be in the comment section. Thanks all.. One love

Increase your PV array, ensure they don't go below 50% DoD, batteries might need equalization

Nutridelfarms:
Hello Guys,
I just installed a 6kva inverter system. The inverter brand is Gospower (6kva) while the battery brand is Marstek (5120Wh). This combination was recommended to me by someone. It's been up to 3 weeks since I installed this system and I am not yet impressed. The first issue I have observed is that I hardly get up to half of the total power output of the solar panels (10 x 330W). I understand it's cloudy but the few times the sun has shone bright, the maximum output is usually around 400-500W.

Second issue: I observed an anomaly yesterday when power went off. I observed that the voltage on the inverter panel dropped drastically to 48V from like 54-55V upon disconnecting from the power grid. This was shocking to me. Then shortly after that like 5 mins, the voltage dropped further to 47V which triggered the inverter to shut down. I had set a low DC voltage of 47V. My load consumption is very small - ranges from 200W to 400W. 400W during the day when the industrial fan is on. All other appliances are basic.

My next course of action was reaching out to someone to come do an independent troubleshooting and inspection as I can't tell where the fault is coming from: inverter, battery or the installation. Secondly, I contacted the battery manufacturer to complain about the issue and they promised to send a technician over.

I'm still in shock as regards what might have caused this issue.

First Pic was taken shortly after power went off showing the drastic drop in voltage.
Second pick was taken upon restoration of power in about 10 mins when it first went off. As you can see, the battery charge status shows a fully charged battery and voltage rose back to somewhere between the float and bulk voltage.

You sure those panels are real capacity?

Please who has idea of a 20kva single phase inverter that can be paralleled to another 20kva inverter?

Thank you so much would check them out

jonescosmos:
LoRA WAN, GPRS& GPS Meters. They have a central Dashboard Portal where you can Manage Settings, Accounts and other things. Clients can download Apps to see their data and etc

Na wa o!
Like the breaker was switched off?

Trippledots:
This was my thought initially too until last Saturday when a client I did a fence PV installation that's about a year old with no complain whatsoever called . His system is off-grid, sachet inverter, switched off during a night thunderstorm.

He came back to find his inverter no longer working, but controller and other devices working fine.

I'm still wondering what happened.

2 other tenants with roof installation had their on line inverters taken out also.

jonescosmos:
REPT Cells

Thanks big man.

gadgetplanetng:
Na wa o!
Like the breaker was switched off?

Turning of a breaker is no sure way of stopping and the Electrostatic discharge you get from a direct or near by lightning. You best bet is proper ground and a well installed SPD. Even that is no 100% guarantee especially if it is a direct strike which nothing can survive.

Trippledots:
Personal, I don't think 1&2 are overboard if they are not very expensive to implement.

That was even where my mind was playing towards before Jones dropped them. How many times does thunder strike when there is no rainfall? Little to none actually.

I will do some market survey and see if it's a cost effective solution.

OK. Your choice is well respected.

bigrovar:
Turning of a breaker is no sure way of stopping and the Electrostatic discharge you get from a direct or near by lightning. You best bet is proper ground and a well installed SPD. Even that is no 100% guarantee especially if it is a direct strike which nothing can survive.

That was not a direct strike. A direct strike leaves evidence - charred remains. That was an indirect surge that a proper ground and well connected SPD could have prevented.

A while back, I did say that lightening can jump gaps in breaker/contactor. At sufficiently high voltage you don't need physical connection for current to flow.

jonescosmos:
I promised us these take apart pictures, Oya, people wey get Pylontech make una post una own ooo.

I'll soon open an EG4 battery if Signature Solar agrees to send me a BMS

PotatoSalad:
Chief. What's up?
Got the 22A own.
What Jinko 580w or 625w config should be ok for this to get maximum generation?

I recently did 9 in series of 550W JA Solar panels and it's been awesome with this inverter.

jonescosmos:
I promised us these take apart pictures, Oya, people wey get Pylontech make una post una own ooo.

Fear dey catch me make I open my Pylontech.

bigrovar:
Turning of a breaker is no sure way of stopping and the Electrostatic discharge you get from a direct or near by lightning. You best bet is proper ground and a well installed SPD. Even that is no 100% guarantee especially if it is a direct strike which nothing can survive.

Seriously? What about countries, like China, that use solar to supply a large percentage of their country? Will a direct attack also attack their grid or there must be a higher method of protection against it? With the level of technological advancement, I find it hard to believe that there isn't any way to stop all types of attack.

Sapiosexuality:
Seriously? What about countries, like China, that use solar to supply a large percentage of their country? Will a direct attack also attack their grid or there must be a higher method of protection against it? With the level of technological advancement, I find it hard to believe that there isn't any way to stop all types of attack.

Unfortunately physics doesn't care about your believes. You can prevent a direct lightning by using active lightning protection systems like Indelec PREVECTRON3 last time I checked the price (sometimes in 2021) when USD was ₦580 it was over a million for the device alone minus installation.

Direct lightning is a very rare occurrence. What is common is electrical surge induced by indirect lightning strike or lightning strike in a near by location. This is why it is best ( more economical and practical and prudent) to invest in SPD. Lightning is a phenomenon that is still being understood there is no exact science that can predict it or guarantee protection against it. What exist are standard practice on how to increase your chances of surviving the effect and impact of lighting.

My central point is. You need an SPD. The Chinese and everyone who cares about important infrastructure installs SPD. Turning off a device or breaker will not protect against a lighting surge travelling 100s of miles looking for ground. It would arc and jump between contacts.. best to provide a path for it to follow. Of cause we are all adult and thus free to do whatever we think work for us.

where can i get this ferrules in lagos

bigrovar:
Unfortunately physics doesn't care about your believes. You can prevent a direct lightning by using active lightning protection systems like Indelec PREVECTRON3 last time I checked the price (sometimes in 2021) when USD was ₦580 it was over a million for the device alone minus installation.

Direct lightning is a very rare occurrence. What is common is electrical surge induced by indirect lightning strike or lightning strike in a near by location. This is why it is best ( more economical and practical and prudent) to invest in SPD. Lightning is a phenomenon that is still being understood there is no exact science that can predict it or guarantee protection against it. What exist are standard practice on how to increase your chances of surviving the effect and impact of lighting.

My central point is. You need an SPD. The Chinese and everyone who cares about important infrastructure installs SPD. Turning off a device or breaker will not protect against a lighting surge travelling 100s of miles looking for ground. It would arc and jump between contacts.. best to provide a path for it to follow. Of cause we are all adult and thus free to do whatever we think work for us.

oga mi ..... since we practice the TT earthing system in nigeria , do you think its wise to do your own neutral/ground bounding on ur mains before going to your db especially to help identify minor earth faults.....

bigrovar:
Unfortunately physics doesn't care about your believes. You can prevent a direct lightning by using active lightning protection systems like Indelec PREVECTRON3 last time I checked the price (sometimes in 2021) when USD was ₦580 it was over a million for the device alone minus installation.

Direct lightning is a very rare occurrence. What is common is electrical surge induced by indirect lightning strike or lightning strike in a near by location. This is why it is best ( more economical and practical and prudent) to invest in SPD. Lightning is a phenomenon that is still being understood there is no exact science that can predict it or guarantee protection against it. What exist are standard practice on how to increase your chances of surviving the effect and impact of lighting.

My central point is. You need an SPD. The Chinese and everyone who cares about important infrastructure installs SPD. Turning off a device or breaker will not protect against a lighting surge travelling 100s of miles looking for ground. It would arc and jump between contacts.. best to provide a path for it to follow. Of cause we are all adult and thus free to do whatever we think work for us.

I get you. I'm not saying it in a way that is anti science but a sort of unbelieve that we've not found a solution despite our knowledge of classical and quantum physics.

I believe that with some tweaking and application of Faraday, Gauss and Refraction laws it's possible that we'd find a solution just like Leo Szilard did with E=MC². A system that can give 100 percent diversion and guarantee against both direct and indirect lightening.

Maybe there's no technology for it yet but I believe it will be found when engineers start exploring or tweaking the already existing laws in science. It's hard to believe that countries like China will spend billions of dollars on Gigawatts (not mega o) of solar energy and still leave their solar grid to any sort of chance. It has to be 100 percent efficient for them. Or maybe I'm overestimating them.

mctfopt:
I recently did 9 in series of 550W JA Solar panels and it's been awesome with this inverter.

Nicee. Were you able to hit the 4950w?

An installer is needed in Shomolu Bariga area of Lagos. I want to add more to the panels on the roof. 0nine070seven52six07

jonescosmos:
LoRA WAN, GPRS& GPS Meters. They have a central Dashboard Portal where you can Manage Settings, Accounts and other things. Clients can download Apps to see their data and etc

This will be too expensive.

brightk:
oga mi ..... since we practice the TT earthing system in nigeria , do you think its wise to do your own neutral/ground bounding on ur mains before going to your db especially to help identify minor earth faults.....

No please don't TT system is designed to have the earth (the ground you are standing on) to be the bond / return part for your earthing to the GRID neutral (the neutral at your transformer which is should be bonded to the transformer earth. Creating a earth neutral bonding at your hour house main DB is having 2 earth neutral bond which is a no no nooo. You are creating 2 path of returns and bad things happen. It is pretty dangerous to do this.

Sapiosexuality:
I get you. I'm not saying it in a way that is anti science but a sort of unbelieve that we've not found a solution despite our knowledge of classical and quantum physics.

I believe that with some tweaking and application of Faraday, Gauss and Refraction laws it's possible that we'd find a solution just like Leo Szilard did with E=MC². A system that can give 100 percent diversion and guarantee against both direct and indirect lightening.

Maybe there's no technology for it yet but I believe it will be found when engineers start exploring or tweaking the already existing laws in science. It's hard to believe that countries like China will spend billions of dollars on Gigawatts (not mega o) of solar energy and still leave their solar grid to any sort of chance. It has to be 100 percent efficient for them. Or maybe I'm overestimating them.

Science is not that easy. they are many things yet to be well understood talkless "solved" the nature of lightning makes it hard to truly understanding ... opinion are divided on how best to protect against it.. It is still one of the gray area of science.

my friend in uyo is using similar technology to sell solar energy to students in a private off camp students hostel.

gadgetplanetng:
What sort of meter would work for this?
Would it allow setting max wattage too?

Hi guys
Has anyone used this CC before
is it any good?

I told my guy to get a 60a Powmr charge controller
He said he will look for it in his city only for him to come back with this one
And the max pv voltage is 100v

mctfopt:
I recently did 9 in series of 550W JA Solar panels and it's been awesome with this inverter.

whats the Voc of each panel?

Please I need guidiance and advise from gurus here. I got this Solarmax 8MT2 Inverter from a friend abroad, although I am not a very technical person but I noticed that the specification of the voltage reads 400v or so. Please can this inverter be used in. Nigeria?? What is the implication of the 400v instead of the normal 220v. The picture of the inverter and specification is attached.

JoeSef0:
Hi guys
Has anyone used this CC before
is it any good?

I told my guy to get a 60a Powmr charge controller
He said he will look for it in his city only for him to come back with this one
And the max pv voltage is 100v

RETURN IT, that 100v limit is a spoiler, it will limit ur panel config and options