₦airaland Forum

Please I need a medium sized 48v inverter. 2.5-3.5kva range. Sellers in the house kindly quote me. It doesn't matter whether hybrid or transformer based.
Thanks

Simple. Add a good quality step up transformer.
I work in an environment that was originally American in most of its appliances and had to contend with Nigerian 230v.

Some of our step ups are large and central like in the picture attached but some are quite small like 1kw etc

oldienavie:
I have a 700w 12v DC -> 110v AC output inverter.
Does anyone know if this can be modified or adaptation that can be done to make it usable for home appliances in NIgeria since our nominal voltage is 220v ?

Picture attached.

The voltages fluctuations from the National grid and the responses from my servo stab. It has been horrible in the last few weeks and I have had to rely fully on being off grid

Many factors could be responsible. I recently got a "transformer" based inverter touted to be 3.5kva. Experience have taught me to test ALL electronic assertions before routine usage. So I installed and very gradually loaded the system with equipment with known capacity. Lo and behold actual capacity was about 2kw at peak. That means if the inverters is routinely used at max 60-70% of capacity, then that will be 1.5kw max!! I Jeje adjusted my expectations and planned load on it.
Imagine an end user that just loaded equipment, thinking 2.5kw plus is within specified limits, nah numerous error code be that!!!!�

Hybrid600:
I have a friend that owns a solar shop and he was so bitter coz about 5 different transformerless wall mount hybrid systems have been returned with different error codes and getting a repairer for them is not easy.

Does it mean transformer based inverters are way better than the transformerless wall mount inverters?

No not this type. It's the old model type..

Juror:
Is the felicity inverter you're referring to, the IVPS model? The type in the picture I attached to this reply? Do you know it's idle/no load consumption?

Anybody have experience with this felicity inverter and it's idle/no load consumption?

Life is simple!

ceaser:
You may both be right with your guesses. From my experience with the kind of inverter odimbannamdi sells, the switch is usually hooked to the metal housing of the inverter rather than to the board. Two wires then go to the board via a JST plug. So the problem may be at a point of soldering of one of the polarity wires, it can also be the metal parts inside the switch. To repair it or apply for refund depends on the op.

And @dollarnaira had reservations about your approach especially addressing him. I believe you may have responded to the post with your own suggestion without even referring to @dollarnaira at all, that is if you don't approve of his own response. There is no way someone with ample knowledge of solar on this forum will be ignorant/have zero knowledge like you maintained.

@ odimbannamdi, is the inverter 24v with ample capacity to handle a deep freezer, I might just pick it up. I may not be needing the metal case for the application intended for which means I will eventually cut open the stuff and bring out the organs to DIY an all-in-one hybrid system for a remote site.

Obviously nothing in life is perfect.
I have been using Gennex products for about 6 years now. I have both the 3.4kva and 5kva Hybrid. The 5kva was just commissioned in February 2021 in another facility and working well. However, the earlier 3.4kva has been beleaguered with repair needs and despite two visits back to Gennex ( lasting months each time before I could get my inverter back and about 100k spent on logistics and repair costs) it's presently down again after working for only 4 months or so after last repair. Total active service less than 3 years.
I am just tired of the inverter sef. Always board issues.
The same load I was using it for, a 2kva Prag and a 2.5kva Felicity (transformer models) have both carried it without stress at different times.
Presently, it's the 2kva Prag holding forth

omimisolar:
Gennex inverter are original voltronic inverter than Growatt , sorotec. On what ground is that recommendation? They all have their teething issues.

I am sorry if I created the impression I had broken panels for sale. My interest/post were about possible repair methods for such panels.
[quote author=omimisolar post=114165810][/quote]

Any update on users' experience or feedback? do you still have for sale at what cost? my interest is the 5.5kw model

futurenix:
Just 1 unit each remaining


3.2KW (pf=1) ,24V with 4000W PV,80A MPPT for 170K

3.5KW (pf=1) 24V with 5000W PV, 100A MPPT for 200K

5KW (pf=1) ,48V with 5000W PV, 80A MPPT for 250K

[b][b][b][s]5.5KW (pf=1), 48V with 6000W PV, 100A MPPT 270K.
[/s][/b][/b][/b][i]

*All with the wifi device included for monitoring with app available on Google playstore.

*Can operate without battery

*Can be used with Lithium battery (Battery bank must have BMS)

*Input PV of 120 to 450V (500Vdc Max)

*Programmable Battery equalization function

*Programmable low DC cut off voltage

*Can take surge upto twice its rated value (6400VA for 3.2KW,7000VA for 3.5KW, 11,000VA for 5.5KW) for 5 seconds

*Configurable AC/Solar Charger priority

*Configurable battery charging current

*Replaceable and available MPPT and main boards (on request)

Uninterrupted power supply.
Whatever combination or permutations that will give me that AT THE LEAST COST MARGIN I am ok with .
Next consideration is RELIABILITY and EASE of operations. I travel a lot and the family must be comfortable in my absence.
My setup is not for BUGA or showmanship.

sethtsadopp:
So I was just thinking randomly about what exactly is the ultimate aim of what we are all trying to achieve with Solar?
Is it uninterrupted power supply?
Is it cheaper electricity?
Is it about the environment?
Or other things?
And which among these is the most important for most of us here?

Because for example, if it's about saving money, from some rough calculations I have done, it appears off-grid solar is simply the most expensive way to make electricity, No?
So does off grid even make any sense? Or is it best to combine grid and solar to create that uninterrupted supply (and cheaper bacause of grid?).

What are your thoughts on these?

NiyiOmoIyunade Ojeysky olopan valto earthrealm GeorgeD1 Bigrovar

solareclips:
Thank youvery much for your swift response, please what of felicity solar?

No experience at all

You've identified the problem partway. The voltage of the gen is too high for starters . My experience is that some inverters will not use any power source that the voltage is unstable, above 250v or frequency less than 45Hz . You can attempt changing the gen's AVR and see

dammodee911:
Recently installed a 5.5kwh Smk hybrid on and off grid inverter system coupled with 4 units of 12v 200ah blue carbon lithium ion lifepo4 batteries and 8 450watts mono solar panels. Everything seems fine, but the only downside is that my 9kva firman 12990esr generator can’t seem to charge it. So far only the solar and Nepa light have been able to charge it. But with the raining season on full mode and epileptic power supply, I really need the generator option. My installer said my generator frequency isn’t enough, this is a generator that comfortably powers my 3hp inverter standing AC and 1.5hp inverter AC. What can I do pls? So far from the inverter screen, my gen produces btw 275 -285v and btw 48 - 50.5hz. Shouldn’t this be enough to charge the battery?

Valto:
i will go in this order
1) Growatts 48V ES 5KW model sold around 550 to 600k
2) SOROTEC 48V newest model(2022) 5.6kw REVO VM IV
3)EPEVER 48V high pv model sold around 400 to 450k
4) Gennex..
but the baba of them all is deye

A recent review above@solareclips

Fortunately the uncracked ones!

HeadofNairaland:
@durodee

Are these the cracked pv?
Heart beating too fast.....pls dont say 'yes'
Mono or poly?

O Sun, yield thy power!

That is why I liked this forum!
Always looking for solutions not minding the effort!!

earthrealm:
lucky you, was able to unearth the pics from google photos...this was in 2019

The cracks are web- like and fine. Some places the glass had turned opaque

HeadofNairaland:
Are the glasses still together in a piece?
I feel most pv are made of tempered glass and do not shatter into fragments. I am experimenting with 2 after trying to put d glass in place.

Saw many videos online.
Longevity is a major issue.
Seems to be a hit or miss situation. Its an experiment that the answers come in years.

tetralogyfallot:
they work very well but fails overtime if water starts dripping inside the cells. It's usable in dry season but starts declining immediately rain starts falling on them. I've watched a video on YouTube where a guy was suggesting using a laminated film to coat it, it also fails overtime during intense hotness of the sun as the laminated film starts peeling off. Just use it while it last.

I hear you my brother!

HeadofNairaland:
I would be interested bro.
No more hope for phcn

Any specific make or brand name?
Is it worth it to buy such panels and what value /percentage of original price?

earthrealm:
sadly none that lasts.

i have had that issue, I bought this liquid polyurethane/polycrylic gloss or satin, brush off all the glass particles and dust, and apply in uniform coats,, it will harden after some time to give a hard transparent finish, if done properly, you could get some years usage from the panels. google and watch youtube videos to know more

Lacquer polish can be obtained from a paint shop ,right?
For how many years will that give the panels?

olopan:
Get a lacquer polish ... Unmixed and use as laminating film on the glass it should prevent want from entering

Thanks for the offer. I am a bit far away and that will not be feasible.

Dishtech:
I can repair it for you if you are living Abuja.

Good evening house. Is there a way to repair broken panels? There is a project ongoing somewhere and I noticed as the panels were being offloaded that some panels had broken glasses. Is there any way the could still be useful? They are 450w panels and quite a number of them.
I am wondering if one can cover with new glass and seal the edges to prevent egress of water if that will work?
Just thinking ........

A year plus and not much to add. I initially added the whole 600amps Ritar bank back and used it like that for about 3- 4 months, then took 200amps out to use somewhere else. About a week ago, I took another 200amps out. I noticed the ones I took out recently were weak BUT fairly much like the present state of their colleagues I took out of the bank about a year ago. The last 2 Ritar is still paired with the Lithium and still meeting my needs as my household needs have reduced a bit.
So that is it. Union of unlikely bedfellows.

durodee:
Good morning house, I was recently faced with a challenge. I have a 24v 5.4kwh LiPO4 bank and a 600amp 24v used Ritar battery bank. Tested alone the LiPO4 did not meet my daily need. It will usually go off around 2-3am (when I personally need it most!) and the used batteries much earlier at around 12mn at times.
I was discussing this challenge with a friend and he told me he connected his LiPO4 and SMF bank together(in parallel) to the same busbar and that has resolved his problems.
So I checked online https://community.victronenergy.com/questions/19981/mixing-lead-acid-and-lithium.html and realized many others have tried it with the pro and cons, different charging and discharging profiles mainly.

So I connected 200amp of the Ritar to my lithium bank to test run. I also used 28.2v bulk and 27.4 float charging profile on my inverter and CC. All connected yesterday evening. I was able to use the system overnight and even ironed with it this morning, however I was aware there was grid supply at some points overnight and therefore I can't say if it works or not.

It is early days yet. The risks are shortening the lifespan of the lithium and undercharging the lead acid but based on what seems to be happening as described by others, due to the BMS, lithium charges and discharges first and the lead acid charges and discharges last.

I will update the house on my experimentations and hopefully, no big bang episode!

I love that slooooooooowly! And the sigh!
Don't be exasperated Prof, so many things to distract one nowadays. ASUU is on strike.

AndroBlaze:
:sigh: even when you make things easy ....

If you choose to ignore the other video, please rewatch the 2nd video slooooowly, he talks about non-inverter acs and the fact that the compressor switches off which you should know that power is being saved then.

If you are still not happy with that explanation, note that most credible inverter ACS will tell you that they save you 60% of what a traditional AC would...you can do the calculation to see how much KW that would be in the 2 videos sampled.

But my real advice is try to sample it yourself and come and tell us what you get...lets stop easy assumptions.

Sir, the second video posted was talking about INVERTER ACs!

Those are expected to consume less.

AndroBlaze:
Not sure why NLanders keep safely assuming 1horsepower= 1kw....argued with a total idiot a few days ago on this and you need to see how he kept forming knowledge he clearly did not have.

If those ACs are split units and are really 1.5hp you will not use close to that 36kw. 1hp is actually between 735- 745 watts, so theoretically 1.5hp will be around 1.2kw, so doubling it it would be 2.4kw an hour and less than 30kw for both in the 12hr period; but trust me you will never use that much because of the way ACs work (in particular splits), especially when you are using them in the night like you suggested.

To make it easy, watch these 2 videos below of a 1.5hp ac and 1.5ton ac (1ton = 3.5kw, but this is another argument). Please look at the results for the total draw in KW for the periods tested. (Noticed video 1 blocked, try and watch it on youtube, easiest to comprehend)

In my opinion you will not use more than 24kw at worst for those ACs in the night, but I would really like those who use splits here in the night to tell us what their draw is if I am wrong.


https://www.youtube.com/watch?v=hMZ6SERwRV8


https://www.youtube.com/watch?v=e4dnXk5tr5c

Cakkie, the problem with Nairaland is that if you pose a problem, many people will respond based on the information available to them. Most meant well but it will be so difficult to separate rubbish advice from good advice.
I have decided to post again to save you some emotional distress.

That wound did not suddenly turn that way. You had an initial wound that healed with a scar. You were not happy with it. You approached someone who injected the scar with TRIAMCINOLONE ( a very very strong steroid). Obviously both you and the "injector" did not know the power of the drug and what dose/dosage to use. You were overdosed and also the injected site became infected which was double wahala. The wound form a scab which you peeled away leaving you with what you have. A wound with initial central necrosis and extremely retarded healing.

Now in such case, it takes about 3=6 months for the tissue affected to recover. It is the body that heals itself not the medications you apply. Stop buying and applying all the potions being suggested because it won't work. If you have money, then maybe you can try some. Just make sure you got it from a real hospital this time but I doubt even if it will do better than real honey.

Lesson to learn: Leave some scar Alone!

My little kobo advice backed by years of training and experience.

Cakkie:
Alright. Thanks.

Looking at your first post about the initial scar you had injections of Triamcilone (Kenalog/Tranalog) on the scar. That was what caused the scar to form fresh wound and to break down more.
The function of the injection is TO SLOW DOWN WOUND HEALING among other uses. So plan for another month or two before the wound will heal AND DONT MISUSE THE INJECTION AGAIN!

You can dress the wound with original honey and make sure you check your blood for increase in the sugar level as Triamcilone causes the blood sugar to be high.
All the best.

Cakkie:
Good day, all. I'll be brief.

The first thread: https://www.nairaland.com/7063080/ampicillin-capsule-dry-heal-open


Pls my wound have refused to heal despite applying various medications on it (chloramphenicol, ampicillin, penicillin ointment, injection powder).

It's getting to two months now. I'm really tired nairalanders. Pls help me out, I have spent all the money on me trying to get it healed but all to no avail.

Doctors, Pharmacists, Nurses and experienced health personels in the house pls I really need your sincere advice.


Pls help me get to the front page. I believe there are a lot of experienced folks in this forum. Pls help me out guys.

Will surely contact you if going that path.

olopan:
My suggestion is that you try Growatt

Why?

1. You suspect its being abused so with its remote monitoring feature, you can have proof of abuse to confront end-users

2. Comes with two (2) year warranty - available with authorize dealers only

3. The ES Series has a wide PV input of up to 450Voc (430-120V) MPPT range

If convinced & might be in need, our company can help you get it for you at best price and also stand in gap for your warranty if need be.

Noted with thanks!

olopan:
My suggestion is that you try Growatt

Why?

1. You suspect its being abused so with its remote monitoring feature, you can have proof of abuse to confront end-users

2. Comes with two (2) year warranty - available with authorize dealers only

3. The ES Series has a wide PV input of up to 450Voc (430-120V) MPPT range

If convinced & might be in need, our company can help you get it for you at best price and also stand in gap for your warranty if need be.

Without considering the Baba, then Growatt seems to be the Mama then! Thanks +++

Valto:
i will go in this order
1) Growatts 48V ES 5KW model sold around 550 to 600k
2) SOROTEC 48V newest model(2022) 5.6kw REVO VM IV
3)EPEVER 48V high pv model sold around 400 to 450k
4) Gennex..
but the baba of them all is deye

Noted with thanks! To see you put MPP at that level is really telling!

ojeysky:
Growatt will top the list for me then the rest. I love the epever interface but I have no usage experience. For hybrids it will be this order for me:

Deye
Growatt
Epever
Axperts variants(MPP, gennex, etc)
Sorotec

I have only experienced the ones in bold. If I have the budget it will always be Deye for me, that machine is simply value for money