₦airaland Forum

mcTrinity:
SUKAM (or Mopower) all the way... I use SUKAM/Mopower 3.5kva to power fridge and freezer..
can't try that with even PRAG 4kva

That's very very untrue!
I have the 4kva Prag, it carries my 2 fridges plus a deep freezer, booster pump, gencool air conditioner and my other house loads.

My daytime loads cycle between 1.2kw and 3.5kw.
My night time loads between 200w and 300w.

There's always the overload alarm when I exceed 3.2kw

bigrovar:
this site is worth an estimated one hundred million dollars. All thanks to the post you and I create here. All am saying is.. User experience could be better to allow us create more content.

One hundred million dollars
No wonder Seu.n don comot hin pishure from profile

mayorall:
Romoss power bank sent to calabar. For Barez plus his USA item that arrived with us.

Splendid! I can't wait!!

babaegun:
...That's all

Muchas gracias, mi buen amigo!

naijawealth:
is Garner trsuted?? can I send first??

1. Use the SEARCH box on Nairaland and do your own research.
2. Ask him/her to quote you here.
3. Use ESCROW
4. Use ESCROW
5. Use ...

Follow simple rules and safeguard your funds. na wa o!
Don't allow anyone to put pressure on you to part with your hard earned money. Unless you no work hard to earn ya money...

CC: Tabbaz

Seun:
Which posts and which forums and which network and which phone and which browser?

Mr Seun. A lot still need be done to improve content creation here on Nairaland. The current setup can be very frustrating.

This is bigrovar. Barezzi my friend is making this post on my behalf because your spam bot has banned me for a post I made. It was a detailed post in respond to one of the newbie who came to this thread seeking help @nene. My post was not in violation of any NL rules neither did it contain anything irrelevant to this thread. It was very detailed and would have helped nene considerably. Unfortunately your spam bot deleted my post and banned me. It's not the first time too. Many a post I have made have been lost to the spam bot and I got a ban for my efforts. It is really really frustrating. The worse part is there is no obvious means of reporting issues of false positive or appealing a ban. No link to forum moderators or how to even reach anyone. You are not active on Twitter even the email I sent I got from my sent items when I sent similar email 2010. I never got an acknowledgement or reply. I have been in this forum since 2007. Never once violated NL rule. With over a 1000 posts many of which are educative and helping to make NL a great community. From Computer Section, Solar thread, Mobile phone, Auto, and Politics. All I and many like me ask for is a better experience at posting. Thanks.

Saipro:
I have been having immense problems replying posts as well as opening some nairaland forums. I have had to device some workarounds. Even quoting posts now requires manual tagging. Anyone else having these issues?

Nairaland has issues. It keeps throwing me out, and requesting i re-enter my username and password.

babaegun:
So guys, I finally did it.

Remember my Fangpusun solar CC. I have been able to extract data from it using emoncms...

Kindly share how you achieved this bro. I'm interested.

You need a battery bank to store twice your total WH(~3000wh × 2)@ max 50% DOD.
Discounting system losses, you're looking at about 500Ah for a 12v system.
Inverters for the range you've chosen are usually 12v.
Such a small inverter may not effectively charge a 500Ah battery bank.

Stepping up to a 24v inverter will drop the battery bank requirement to 250Ah.
30A mppt CC and a 600W PV array.

GeorgeD1:
barezzi,
to keep the answer simple, the seemingly large battery bank size is to provide extended hours
of autonomy especially on cloudy days.

Nice one chairman...
Personally, it's cheaper to run the gen for a few hours a year than spend millions building a large battery bank.
Especially with such a huge PV array.

Your battery bank is okay, i understand the rule of thumb is 100AH for every 1kw array.

So for a 7kw plus array, your almost 700Ah bank dey in order.
I don almost perfect my plans to rob bank. I wan be like you

jazzman2:
Sir, I never implied that the sole aim of using gridtie inverters is to roll back NEPA rates. In fact, I mentioned that grid tie does not necessarily mean sell back to grid. I am trying to highlight the high energy conversion efficiency of using gridtie inverters off grid that are AC coupled to bi-directional inverter chargers if the primary loads are daytime AC loads. Pls don't mid-interprete my words. Thanks

This captures my points succinctly!

DMerciful:
If there is no grid...there are better designs to use than grid tie inverter(its like using helicopter to go to church

It's like driving a Peugeot 504 in 2017 cos you don't wanna depart from tradition
Look up "AC coupling" bro, it's a more efficient setup for those with high daytime loads.

DMerciful:
My Guy, grid tie is different from micro inverters. what you described is micro inverters where every panel has its own micro inverter and combined to power the house loads directly. grid tie as the name suggest is meant to work with the grid. Also about a large battery bank, irrespective of your panel array capacity, the sunlight intensity variation determines also if your bank should be big or small. A person in the North can have a small bank as sun intensity from sunrise to sunset is quite constant unlike southern Nigeria especially the freshwater swamp where there is appreciable cloud covers on a daily basis and even very dull weather for days, you dont want to make massive investment that doesnt work sometimes no matter how few.
Hybrid inverters are those with inbuilt charge controllers

Na you dey call Micro inverters. I never mentioned it.
You CAN connect a grid tie inverter to the output of a bi directional stand alone inverter/charger. This forms a micro grid... So irrespective of what happens to the national grid, the grid tie inverter will still stay synchronised with the stand alone inverter.
You don't need NEPA to use a grid tie inverter.

DMerciful:
Grid tie is used when there is need to feedback to the grid esp during excess generation. In this arrangement, when there is less generation, the deficit is gotten from the grid while when the is excess generation, the extra is feed to the grid and the person gets credit from the utility company which he can consume later during deficit or paid in some other form.....not applicable to Nigeria but countries like Australia

This is patently untrue egbon...
Grid-tie/Hybrid inverters can be used with or without back feeding to grid. It is not the only reason why most folks purchase them.

You grid-tie when most of your loads are consumed during the day. The PV inverter converts DC to AC which is then consumed immediately.
Later at night, your stand alone inverter inverts DC from the batteries to AC to feed night time loads.

The point i'm trying to make is if one has a large PV array, it doesn't make sense to also build a large battery bank.
Unless such an individual's night time loads are huge.

tivta:
Grid tie? Where is the grid power in the first place....

Grid-tie to the "AC out" of his bi-directional inverter-charger.
This creates a micro grid that the grid-tie inverter will synchronize with.

Good one GeorgeD1!!
I'm still plotting which bank to rob so i can be like you

I understand DC coupling is best for those with huge battery banks and high night time loads.
With your huge array, over 7kw, do you think you'll be better served with a small battery bank sized for night time consumption and a grid-tie inverter to maximize daytime usage?

I love your setup Pranil. If i can lay my hands on a monitoring software like that of Justin Case, I'd be sold...
I just love his dashboard.


https://www.youtube.com/watch?v=ZAwG9VtvSGE

DMerciful:
The inverter looks cool indeed however i may join the band wagon after ur experience

Thanks Pranil, very detailed response.

https://www.aliexpress.com/item/GOODWE-5KW-48VDC-Single-Phase-String-Grid-Tie-Solar-Inverter-MPPT-Grid-Connected-Solar-Inverter-With/32806737185.html?spm=2114.01010208.8.9.Yhg7Oq

Mayorall, how much to area?

Pranil,
1. What's the maximum PV input DC voltage
2. Number of mppt inputs
3. The monitoring software you use?

Thanks Battleaxe...

bigrovar:
Has anyone here who uses any of the Axpert series of Inverters be it ipowerplus or Gennex been able to ascertain the idle consumption of these units?

Egbon, there seem to be a dearth of information concerning the ipowerplus.
I have searched everywhere, nothing tangible. Even users are afraid to share their experiences... Lol
Abeg if anyone has any info, please share.

Khassy where e dey hapun? E don tey wey I drink better kai kai

Acid battery?

That's good news!
Hope today's shipment will include what I sent you earlier

allCopacetic:
5-7w of i recall correctly.

3.5k - 4.5k

5w okay.
I need 6pcs.
I'll call you.

Lmao! See as you dey attack everybody.

battleaxe:
@ house
...I would like to retain inverter supply to all loads in the house (I want to have the flexibility to choose to switch say an AC on during peak sunshine hours) so do not want to split my loads to essential and non-essential.
Thanks!

I think this may address your present dilemma. No DB split necessary, but you purchase for each circuit you wanna control.

pranil:
...Just replace the existing MCB no separate DB requited or create a DB with Rows of MCB saving space and money.

https://www.aliexpress.com/item/MKWCT-25M-Manual-220V-240V-Universal-Home-Household-AC-Contactor-Modular-Modulus-25Amps-2P-2-Two/32671904971.html?

allCopacetic:
Please See below

https://www.nairaland.com/2941901/watch-space-electrical-showcase-review/17#51690920

This is exactly what i want. How many watts, and price?

This is really inspiring. This is what ive been discussing with Bigrovar. With integrity and adherence to international best practices, I see you conquering the African sub region.

allCopacetic:
Recessed into the wall or surface mounted?

Recessed...

Do you have something for staircase walls?