isangjohnson:
Please, is it possible for one pv string and one battery bank to run two inverters via changeover switch?
A case of total off grid where inverter A (say 5kw 48v hybrid) could be powered in the day and switch to inverter B (say 3.5kva 48v with standalone Mppt CC) in the night via changeover switch.
POINTER: One pv string and one battery bank (Lfp) tide to the two inverters.

Yes. I presume you mean that the changeover switch will determine which inverter outputs to the house.

durodee:


Yes. I presume you mean that the changeover switch will determine which inverter outputs to the house.

Yes boss.
Kindly drop a skeletal diagram.
Thanks

@isangjohnson

dollarnaira:
@isangjohnson

Thanks boss

isangjohnson:
Please, is it possible for one pv string and one battery bank to run two inverters via changeover switch?
A case of total off grid where inverter A (say 5kw 48v hybrid) could be powered in the day and switch to inverter B (say 3.5kva 48v with standalone Mppt CC) in the night via changeover switch.
POINTER: One pv string and one battery bank (Lfp) tide to the two inverters.

While this is possible it is also cumbersome. The 5kw can also work in the night. These machines are designed to work 24 hours.

Please recommend a 2.5 - 3.5 KVa inverter to me

Something with low idle consumption and has all the necessary features and isn't a waste of money

Something I can use with both Grid (+Gen) charging alone, and add Solar Panels later.

isangjohnson:
Please, is it possible for one pv string and one battery bank to run two inverters via changeover switch?
A case of total off grid where inverter A (say 5kw 48v hybrid) could be powered in the day and switch to inverter B (say 3.5kva 48v with standalone Mppt CC) in the night via changeover switch.
POINTER: One pv string and one battery bank (Lfp) tide to the two inverters.

Get one of this and wire it up as indicated.

coldcandy:


While this is possible it is also cumbersome. The 5kw can also work in the night. These machines are designed to work 24 hours.

Why is it cumbersome? It just involves shifting a knife switch up and down.

durodee:

Why is it cumbersome? It just involves shifting a knife switch up and down.

Coldcandy.

What he meant being cumbersome is the outdated design of having 2 inverters and or battery bank..for daytime and nighttime usage.
Its super cumbersome and makes no sense in the present day with low idle /self consumption hybrids.

A new model 8kw hybrid inverter has about 70watts to 100watts idle consumption, while the old traditional transformer based 8kw inverter will have idle consumption in excess of 250watts

isangjohnson:

Yes boss.
Kindly drop a skeletal diagram.
Thanks

I can see you have been answered. An appropriately sized regular knife switch will do.
I had three inverters connected at a point:
(1) 6kw transformer based
(2) 3.4kva hybrid Gennex
(3) 1.4kva Sukam
all to a 24v 800amp sealed battery setup.
The 6kva carry the whole house- ACs ,oven etc .Only used occasionally.
The 3.4kva is the workhorse. On during the day, fridge and pumping machine on timer on it.
In case the 3.4kva is faulty, the 1.4kva Sukam comes on board as backup to provide power for basic household needs.
All the inverters are permanently connected but 1and 3 usually switched off. Inverter 1 and 2 AC output goes to one Changeover and the output of that and inverter 3 goes to another changeover before finally to the DB for inverter and then to the house.
There is a however a direct wiring between inverter 1 to the main house DB so that the whole house is supplied .
I also have a standalone 60amp MPPT Cc connected to my battery bank to ensure adequate charging of my bank

Ok . I see his point now.
My usage of multiple inverters has been more for redundancy as I have explained above rather than having different banks.

earthrealm:


Coldcandy.

What he meant being cumbersome is the outdated design of having 2 inverters and or battery bank..for daytime and nighttime usage.
Its super cumbersome and makes no sense in the present day with low idle /self consumption hybrids.

A new model 8kw hybrid inverter has about 70watts to 100watts idle consumption, while the old traditional transformer based 8kw inverter will have idle consumption in excess of 250watts

coldcandy:


While this is possible it is also cumbersome. The 5kw can also work in the night. These machines are designed to work 24 hours.

I understand your point but if one has a small system running and plans to upgrade to a bigger system, instead of allowing the small (backup) system to stay idle, using it to run smaller loads at night while allowing a bigger system to sleep shouldn't be a bad idea.

earthrealm:


Coldcandy.

What he meant being cumbersome is the outdated design of having 2 inverters and or battery bank..for daytime and nighttime usage.
Its super cumbersome and makes no sense in the present day with low idle /self consumption hybrids.

A new model 8kw hybrid inverter has about 70watts to 100watts idle consumption, while the old traditional transformer based 8kw inverter will have idle consumption in excess of 250watts

I guess you're referring to a case of getting two new inverters installed, but I'm referring to a case of upgrading where a smaller (already installed) system could complement a bigger one (yet to install).

AshipaEk0:
Please recommend a 2.5 - 3.5 KVa inverter to me

Something with low idle consumption and has all the necessary features and isn't a waste of money

Something I can use with both Grid (+Gen) charging alone, and add Solar Panels later.

Try growatt, tbb or contact idyllic.

isangjohnson:
Please, is it possible for one pv string and one battery bank to run two inverters via changeover switch?
A case of total off grid where inverter A (say 5kw 48v hybrid) could be powered in the day and switch to inverter B (say 3.5kva 48v with standalone Mppt CC) in the night via changeover switch.
POINTER: One pv string and one battery bank (Lfp) tide to the two inverters.

Yes, it's possible.

I guess you're trying to use a low consumption inverter at night.

earthrealm:


BUY 1 OF THOSE SMALL power packs sold by fapemz / cooldipo.....i think they output 12v and have a 12v charging input port then buy 1 unit, or best if you can make it 2 units of 100w or 150w solar panel.---- about 25k each....then get a small 20amps pwm charge controller - abt 10k, and a small 12v 300w inverter, 13k to 18k.. and you are good to go. this may exceed your budget slightly, but if u do ur research well and is willing to put in some work, you can achieve ur aim at an affordable price

Thanks for the recommendation Sir! We don't take it for granted. The truth is that there is a great number of people whose basic power needs can be met by our small power solution but they are mainly ill-informed or lost in the crowd. Alternative energy is a game changer but a lot are still not well educated about it all.

isangjohnson:

Thanks boss

You are welcome.

AshipaEk0:



Please I need a big favour.

Help me spec out a shopping list of quality equipment for this installation.


https://docs.google.com/spreadsheets/d/1loHJOX6j-2iNg9xU2rcdIsB8l8y1cHTuA4VW5RjgqF0/edit?usp=sharing

I know that if I add properly sized panels later I may be able to use a fridge during daytime etc, but I just need to get something going with grid+gen charging for now.

I don't want to buy/waste money wey I no get please.

Those 3 ceiling fans consuming 180w shouldn't be in your system at all, replace them with Qasa DC/AC ceiling fans. It's a no brainer.

Juror:


Those 3 ceiling fans consuming 180w shouldn't be in your system at all, replace them with Qasa DC/AC ceiling fans. It's a no brainer.

Could u share the link of these fans,
Whats their real life wattage?

Valto:
50ah and 135ah only available.

Do you mind stating the amount for fully coupled 135ah @24v & 12v respectively?

If one is going for 24v route, does one need battery balancer and dedicated 24v LFP charger?

TBB 1.6KVA-24V has 25A charger, is this sufficient to charge the above battery capacity?

TBB 1.2KVA-12V has 40A charger, if one decide to go 12v route, is dedicated LFP still needed?


Please answer above questions respectively.

earthrealm:


Could u share the link of these fans,
Whats their real life wattage?

(Link of the fan with amount)
Qasa Solar Ceiling Fan AC/DC
31,000
https://www./qasa-solar-ceiling-fan-acdc-66437523.html


(Fan technical specifications from manufacturer)
QCF-56C dc
Ceiling Fan QCF-56C dc

Specification：

Power supply: 12V DC
Power input: 36±5W
Rated current: 3A
Rotation speed: 320±10rpm(Max.)
Blade span: 1400mm±3%
Recommended solar panel: 15~18V, 45W~50W
[url]http://www.qlinkcentre.com/products_list.php?cat=Electronic%20Applainces%20Ceiling%20Fan&get_page=1[/url]


Can this fan be use on regular AC sockets?

TechGeek777:


Do you mind stating the amount for fully coupled 135ah @24v & 12v respectively?

If one is going for 24v route, does one need battery balancer and dedicated 24v LFP charger?

TBB 1.6KVA-24V has 25A charger, is this sufficient to charge the above battery capacity?

TBB 1.2KVA-12V has 40A charger, if one decide to go 12v route, is dedicated LFP still needed?


Please answer above questions respectively.

it is not really everything that we should discuss on open forum. i have stated the prices of my cells. which is 22k for 50ah, 50k for 135ah
whatsapp me for further details about coupling and others. thanks. 0802-057-4628

chipsypop:
Good evening house. I plugged my 12V 1.5kva Yohako inverter that is not up to a month to charge via Nepa this evening and the fan has refused to come on. At a point the alarm starts, I believe it's because of high temperature. Pls what could be the problem and how do I fix it.

your cooling fan may have stopped working/become defective. ensure your grid/nepa is clean voltage and within the 190v to 240v range, or best get a 3kva and above stabilizer and connect your inverter.

consider changing the fan if your voltage is clean and the fan still doesn't kick in

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Pro solar roof mount set. The 4.2m rails & accessories "L foot, mid & end clamps" comfortably takes upto 4 units of 300w above solar panels .....

Firm price: N59,000


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Please experts in the house I need help, my budget is max #300k and I need something that can power my house because PHCN is getting crazy,

A friend advised me to go for this beebeejump because that's what he is using too and another friend advised I go for the Qasa solar generator �

Now I'm confused about what's best ,

My house

One TV
One Fan
Home Theater
Decoder
2 laptop
Phones
4 bulbs,

There is AC and Fridge but I can use those ones on PHCN when they give light

Please what do u think is the best option for me ??

Thanks in advance ��

earthrealm:


Could u share the link of these fans,
Whats their real life wattage?

I don't have a link, I usually just search for vendors and marketers when I need them, I think I've installed over 14 units for different users.
The minimum level using the remote (the wall unit tends to act up after sometime) is around 4Watts and it increases by almost 4Watts for every next level, personally even the third - fourth level is too much for me but the max it can go is 36W. I've installed some using 12V 2A adapters and they work within the range. 3A adapters are usually tough to find and I'd have to import a lot for use, but the good thing is that with the recent versions, Qasa now includes an inbuilt AC to DC supply with the wall unit and also a DC -DC converter, and it has multiple power inputs, you can input even a DC/solar panel directly or just connect AC supply.

Mosesibb:
Please experts in the house I need help, my budget is max #300k and I need something that can power my house because PHCN is getting crazy,

A friend advised me to go for this beebeejump because that's what he is using too and another friend advised I go for the Qasa solar generator �

Now I'm confused about what's best ,

My house

One TV
One Fan
Home Theater
Decoder
2 laptop
Phones
4 bulbs,

There is AC and Fridge but I can use those ones on PHCN when they give light

Please what do u think is the best option for me ??

Thanks in advance ��

I doubt you can do 300k with what you've listed, maybe you should go with the type of your friend's beebee jump and use it same way he's using his.

TechGeek777:


Do you mind stating the amount for fully coupled 135ah @24v & 12v respectively?

If one is going for 24v route, does one need battery balancer and dedicated 24v LFP charger?

TBB 1.6KVA-24V has 25A charger, is this sufficient to charge the above battery capacity?

TBB 1.2KVA-12V has 40A charger, if one decide to go 12v route, is dedicated LFP still needed?


Please answer above questions respectively.

If you're buying tbb and for lithium, are you buying with the control unit?
you'll need it if you have to frequently adjust it's settings.

Let me mention that the Qasa AC/DC standing fan consumes less too, of course it works only via the DC supply but the AC/DC wall fan consumes a lot when you power it via the AC port.

Juror:

If you're buying tbb and for lithium, are you buying with the control unit?
you'll need it if you have to frequently adjust it's settings.

I will also buy Vision Light control monitor for it. Is it same thing with the control unit you are talking about?

Can you help to answer if dedicated 12v LFP charger is needed for TBB 1.6KVA 24V Inverter?

Also if dedicated 12v LFP charger is needed for TBB 1.2KVA Inverter?

Valto:
it is not really everything that we should discuss on open forum. i have stated the prices of my cells. which is 22k for 50ah, 50k for 135ah
whatsapp me for further details about coupling and others. thanks. 0802-057-4628

But nothing stops you from stating the amount for fully coupled 135ah LFP with 120a bms inclusive. It would help other potential buyers to avoid pricing when reaching it.

Juror:

I don't have a link, I usually just search for vendors and marketers when I need them, I think I've installed over 14 units for different users.
The minimum level using the remote (the wall unit tends to act up after sometime) is around 4Watts and it increases by almost 4Watts for every next level, personally even the third - fourth level is too much for me but the max it can go is 36W. I've installed some using 12V 2A adapters and they work within the range. 3A adapters are usually tough to find and I'd have to import a lot for use, but the good thing is that with the recent versions, Qasa now includes an inbuilt AC to DC supply with the wall unit and also a DC -DC converter, and it has multiple power inputs, you can input even a DC/solar panel directly or just connect AC supply.

Basically, if I buy a Qasa DC ceiling fan,. I can swap out my current AC fan with it?

No stories, no hassle, nothing to buy in addition?