NewStats: 3,264,188 , 8,182,903 topics. Date: Tuesday, 10 June 2025 at 05:51 AM 502q3j

earthrealm:


Yeah, the science checks out ok.
All s in series gives you a loss of 12%,
3257watts max possible harvest
31.2volts...avg vmp
Imp...105a

all in parallel is 11.8% loss

Arranging all similar s in series then paralleling them would hvv given you over 70% loss....i think this was where the myth of derating to the smallest comes from

I would have connected the 650s in series, 270s in 4p2s and series them with the Jinkos. That way the Imp should be closed matched as much as possible across the array.

Obnoxious2001:


Which hybrid inverter is that what's the cause of the problem?

As much as people feel hybrid systems are cheaper and efficient, the ways of the old has always been tested and trusted.

Imagine 8months of downtime , you will then appreciate having a seperate cc and inverter.

Does that include all the disappointments you get by chasing the repairer about like they working for Free ? It's good thing most end s ain't here to air their opinions.
Let's stylishly ignore the fact that after all the spent resources, you still might not get a working system OR if you do, sooner or later, you would realize you might have spent close to 50% of cost of a NEW / USED one.

Funny enough, there are people whose major reason to choose hybrid is just to avoid spending on a separate charge controller.

Trippledots:


Er, ok. I hear you. I think you reason for discouraging him from buying a sachet inverter is not cogent enough, IMO.

Any electronic equipment can go bad, and be repaired or not, depending on the extent of damage. I was expecting some sort of performance related issue as your reason.

I personally have used a sachet inverter for years without any single problem. Heck I've even had mine drenched in rain and somehow survived. I only got to know rain was reaching it where I thought it was safe the day I didn't go to work, it rained buckets and I decided to check how the inverter was holding up. I was so shocked that I tiptoed for fear the place might be live and switched off the inverter.

I started from 1000w/12v to my present 5000w/24v I use currently. Mind you I have used Schneider 1.5kva hybrid inverter before, also mercury UPS as inverter. Non of them gave me value as much as the sachet inverters.

Infact I had one sachet inverter zap when I mistakenly connected it's output to grid. It was repaired at Arena market, oshodi. I did the same mistake a second time unfortunately. The repairer said it could be repaired if I had wanted to,but the cost wasn't worth it anymore.

I have seen pure sachet inverter destroyed by thunder and another that just started misbehaving get repaired for way more affordable amounts that regular inverters would have costed.

Lastly nobody hates you, quit taking discussions here personal. No knowledge is a waste, and a stiff ego will deprive you of adding to your knowledge. Be open to criticism. Smile. 😊

Wonder when I started caring if anyOne likes me or not. Do I get paid for being LIKEd ? na Una sabi

Good day everyone!

Could you please recommend an energy-efficient or low-power consumption fan, preferably an AC/DC model? I'd appreciate any suggestions, including:
Product names, Images, Links or Previous discussions (if applicable)

Thank you all.

earthrealm:


Yeah, the science checks out ok.
All s in series gives you a loss of 12%,
3257watts max possible harvest
31.2volts...avg vmp
Imp...105a

all in parallel is 11.8% loss

Arranging all similar s in series then paralleling them would hvv given you over 70% loss....i think this was where the myth of derating to the smallest comes from

Normal electronics and electrical science already tells us the lowest brings the highest to it's level. Ain't that reason why One is advised not to argue with some set of people so they ain't brought down to their level.

On a 24-volts system for example, the terminals of the Solar while connected to the battery would read 24-volts and slightly above BUT would jump up (to their actual capacity which could be as low as 144 volts) the moment those batteries are disconnected.

Ooreofegrace:
Good day everyone!

Could you please recommend an energy-efficient or low-power consumption fan, preferably an AC/DC model? I'd appreciate any suggestions, including:
Product names, Images, Links or Previous discussions (if applicable)

Thank you all.

of course, any rechargeAble fan is low-power irrespective of the brand name.
where you would encounter issues is battery runtime (that's how long the battery lasts per charge) BUT that's only if you plan on relying on it's in-Built battery.

If you not planning on relying on it's built-in battery, would suggest buying any USED but working rechargeAble Fan, and use it on Solar.

You need not invest much on the solar part (that's if you don't already use Solar). Something as small as 100AH battery and a single Solar with cheapest charge Controller would over Serve you.

If you already running Solar in said location, it becomes way easier.

Another is, except you know what you doing, please avoid Mist Fans (those that spray water to further cool the environment). My major reason be say dem dey quick spoil and I'm not just frugal but always does my best at ensuring reliability in things I use.

Ooreofegrace:
Good day everyone!

Could you please recommend an energy-efficient or low-power consumption fan, preferably an AC/DC model? I'd appreciate any suggestions, including:
Product names, Images, Links or Previous discussions (if applicable)

Thank you all.

Cloud Energy Fan
Consumes around 12-18 watts depending on speed
Around 40k on Jumia excluding shipping

Good day house
Please what is the maximum power rating of a 6.2kva 48volt sunmate inverter
Because an iron of 2300w was plugged on it and it is showing 2.3kva and 98% load on the inverter

bassdow:

Does that include all the disappointments you get by chasing the repairer about like they working for Free ? It's good thing most end s ain't here to air their opinions.
Let's stylishly ignore the fact that after all the spent resources, you still might not get a working system OR if you do, sooner or later, you would realize you might have spent close to 50% of cost of a NEW / USED one.

Funny enough, there are people whose major reason to choose hybrid is just to avoid spending on a separate charge controller.

I think most high frequency/high pv inverters are mostly hobbyist/ enthusiasts. Because if you run installation as a service full time, there are lots of disadvantages hybrid inverter comes with even though we appreciate the size and weight.

However, most people also believe they are the only inverter that are compatible with lithium batteries, I think this has been a selling point for the inverter.

But in all, buy what is fixable very important.

Obnoxious2001:


I think most high frequency/high pv inverters are mostly hobbyist/ enthusiasts. Because if you run installation as a service full time, there are lots of disadvantages hybrid inverter comes with even though we appreciate the size and weight.

However, most people also believe they are the only inverter that are compatible with lithium batteries, I think this has been a selling point for the inverter.

But in all, buy what is fixable very important.

But if we tell them, dem no go gree hear. Reason I sound am say no matter the direction, the only looser na mostly the customer.

As for the believe say Hybrid inverters are the only ones compatible with lithium batteries, look well, na Marketers and Sellers dey promote such believe.

As for your use of the words "hobbyist" / "enthusiasts" , how many of them have we got in this country ? 
That's if we've got any at all.

mahkanjuh:
Good day house
Please what is the maximum power rating of a 6.2kva 48volt sunmate inverter
Because an iron of 2300w was plugged on it and it is showing 2.3kva and 98% load on the inverter

Generally, except you run a large Solar installation, it's highly discouraged to use resistive loads (appliances with heating elements such as Electric cooker, Pressing iron, etc).

As for the ratings you quoted above, me no bother to calculate or reason anything because we no even know whether those ratings are accurate or over-rated.

MoreOver you didn't mention if you run a Solar installation, or just using Inverter + Battery and recharging via NEPA / PHCN.

Also how many batteries are you using ? Some would use just 4pcs as 48-volts.

Another is mayBe you have to switch to all these new generation brand New pressing irons as most ain't power hungry. BUT if I were you, I wouldn't use such appliances on my setUp except of course you run a large installation; which if you do, wouldn't experience such. I sometimes use hot-Plate on my setUp (a dedicated setUp different from my main 2 setUps)

mahkanjuh:
Good day house
Please what is the maximum power rating of a 6.2kva 48volt sunmate inverter
Because an iron of 2300w was plugged on it and it is showing 2.3kva and 98% load on the inverter

scroll tru the display and confirm how many watts its displaying
its likely a fake /rebadged or substandard protect...try running a 1.5hp sumo or AC on it..and see how many watts it displays on the inverter

Thank you, chief! I'll definitely check those out. Just to confirm, are they compatible with AC power as well? The customer already has an existing nstallation, so I want to ensure seamless integration..

Hero2t:


Cloud Energy Fan
Consumes around 12-18 watts depending on speed
Around 40k on Jumia excluding shipping

Thank you, chief! Actually, I'm specifically looking for AC fans, so I'd appreciate recommendations that focus on AC compatibility. And yes, there is already existing setup.. Thank you once again brotherly

bassdow:

of course, any rechargeAble fan is low-power irrespective of the brand name.
where you would encounter issues is battery runtime (that's how long the battery lasts per charge) BUT that's only if you plan on relying on it's in-Built battery.

If you not planning on relying on it's built-in battery, would suggest buying any USED but working rechargeAble Fan, and use it on Solar.

You need not invest much on the solar part (that's if you don't already use Solar). Something as small as 100AH battery and a single Solar with cheapest charge Controller would over Serve you.

If you already running Solar in said location, it becomes way easier.

Another is, except you know what you doing, please avoid Mist Fans (those that spray water to further cool the environment). My major reason be say dem dey quick spoil and I'm not just frugal but always does my best at ensuring reliability in things I use.

Mjolnir:


scroll tru the display and confirm how many watts its displaying
its likely a fake /rebadged or substandard protect...try running a 1.5hp sumo or AC on it..and see how many watts it displays on the inverter

Thanks so much bro, AC ran effortlessly on it, as well as sumo 1.5kva
The point is why a 2.3kw iron be showing 98% of load on a 6.2kw inverter and the inverter is showing truly that the iron is 2.3kw


Set up is
6.2kw 48v sms hybrid inverter
5kva lithium sms battery

mahkanjuh:
Good day house
Please what is the maximum power rating of a 6.2kva 48volt sunmate inverter
Because an iron of 2300w was plugged on it and it is showing 2.3kva and 98% load on the inverter

These weird inverters sef. A good number of them actually deliver just 50% of their rated output, China magic.

Evidently, your inverter isn't actually a 6.2kw one.

ojesymsym:
I also arrived at 3257W max possible harvest using the lowest current among the s as the max current possible from his installed capacity of 3704W.

If he getting higher than the calculated max possible harvest, maybe that theory ing the lowest current to derate may be wrong after all.

That is why it is always good to test and measure before accepting anything as fact. Thanks Mr Peter for throwing up this data.


Now with this new info, I went to use the Isct current (9.06A) to redo the calculation and arrived at max possible power of 3412W, which corresponds with what you are getting.

Your next research should now be what happens to the s (sunpower in this case) that are consistent run at short circuit, to know if there are any effects on them. Because I believe the JK s will be driving lot of those currents when there is enough sunlight to do so.

Today the sun was blazing, and I decided to put on some load because my batteries were full already. Check this.....sometimes science can be unpredictable
And that isn't the peak that I saw

Peterlove11:


Today the sun was blazing, and I decided to put on some load because my batteries were full already. Check this.....sometimes science can be unpredictable
And that isn't the peak that I saw

Science isn't unpredictable, though. If you're seemingly getting more power than the maths says you can get, then it just means your measuring instrument is inaccurate.

I know some inverters and CCs (Powmr, for example) have inflated pv output readings.

Ooreofegrace:
Thank you, chief! I'll definitely check those out. Just to confirm, are they compatible with AC power as well? The customer already has an existing nstallation, so I want to ensure seamless integration..

Yes, they are compatible with both AC and DC. For AC, there is a power adapter that can be plugged directly to an AC output socket.

For DC, there is a cable that can be plugged into a 12v terminal. The terminal looks like those on decoders.

HeavenlyBang:


Science isn't unpredictable, though. If you're seemingly getting more power than the maths says you can get, then it just means your measuring instrument is inaccurate.

I know some inverters and CCs (Powmr, for example) have inflated pv output readings.

Or what if the parameters for our calculations didn't include some variables. From what I can see the weather is on the cool side.

Ooreofegrace:

Thank you, chief! Actually, I'm specifically looking for AC fans, so I'd appreciate recommendations that focus on AC compatibility. And yes, there is already existing setup.. Thank you once again brotherly

if at end of the day, you are unAble to get such Fan, or it's out of your budget, just know that you could use a GoTv charger, or any 12-volts charger for that matter to power your rechargeAble fan and boom; e don turn AC Fan.

A lot of those rechargeAble Fans already would work as AC since they mostly have transformer or some sort of way to step-down power used in reCharging the Fan's battery.

wow. 3704-3624 = 80W remaining to hit installed capacity.

What was the peak you observed?

Peterlove11:


Today the sun was blazing, and I decided to put on some load because my batteries were full already. Check this.....sometimes science can be unpredictable
And that isn't the peak that I saw

bassdow:

Wonder when I started caring if anyOne likes me or not. Do I get paid for being LIKEd ? na Una sabi

Ok

bassdow:

of course, any rechargeAble fan is low-power irrespective of the brand name.
where you would encounter issues is battery runtime (that's how long the battery lasts per charge) BUT that's only if you plan on relying on it's in-Built battery.

If you not planning on relying on it's built-in battery, would suggest buying any USED but working rechargeAble Fan, and use it on Solar.

You need not invest much on the solar part (that's if you don't already use Solar). Something as small as 100AH battery and a single Solar with cheapest charge Controller would over Serve you.

If you already running Solar in said location, it becomes way easier.

Another is, except you know what you doing, please avoid Mist Fans (those that spray water to further cool the environment). My major reason be say dem dey quick spoil and I'm not just frugal but always does my best at ensuring reliability in things I use.

My Mist Fan is now 6 years. Battery is long dead. Brand is Swan

Crazy thing, every thing still works including the mist feature, which I hardly use, as I've upgraded to AC.

mctfopt:


My Mist Fan is now 6 years. Battery is long dead. Brand is Swan

Crazy thing, every thing still works including the mist feature, which I hardly use, as I've upgraded to AC.

Mist fans increases humidity, so it's best suited for low humidity areas or outdoors. If used indoors a lot, mould can start growing everywhere

mctfopt:


My Mist Fan is now 6 years. Battery is long dead. Brand is Swan

Crazy thing, every thing still works including the mist feature, which I hardly use, as I've upgraded to AC.

That's why they say - Your mileage could vary abi na how dem dey take talk am. Another is frequency of use

bassdow:
if at end of the day, you are unAble to get such Fan, or it's out of your budget, just know that you could use a GoTv charger, or any 12-volts charger for that matter to power your rechargeAble fan and boom; e don turn AC Fan.

A lot of those rechargeAble Fans already would work as AC since they mostly have transformer or some sort of way to step-down power used in reCharging the Fan's battery.

This Na direct field experience OT.

Trippledots:


Mist fans increases humidity, so it's best suited for low humidity areas or outdoors. If used indoors a lot, mould can start growing everywhere

No longer use the mist function. It was in my early days of renewable when we are looking for low power cooling.

bassdow:
That's why they say - Your mileage could vary abi na how dem dey take talk am. Another is frequency of use

Fan still in use till tomorrow. Daily use sef. Retired the mist fan feature use. Used that feature for like 3 years before i got over it. I often use it as a drier...run it overnight with a wet sneaker and it's dry the next morning. The motor on that fan is out of the world. Crazy thing I've gone looking for that model and its nowhere to be found.

mctfopt:


Fan still in use till tomorrow. Daily use sef. Retired the mist fan feature use. Used that feature for like 3 years before i got over it. I often use it as a drier...run it overnight with a wet sneaker and it's dry the next morning. The motor on that fan is out of the world. Crazy thing I've gone looking for that model and its nowhere to be found.

Such is life. e get phone wey i use like that. As in when I see (Oyibo) people complain about that model, I go just dey wonder. Phone served me for over 2-years of rough use and na London use I buy am Oooo. Finally it gave up the ghost and I enter market go buy same model thinking I would get same or similar experience. Na so i jam wahala. e no even last me 4-months

Welcome to visit.

Please i need your expert opinions on this question I'm about to ask

My 60amp felicity mppt CC rating for 12 volts is 800watts, but can one install 2 units of 430 watts,making it 860 watts of solar s for it?

Will it damage the charge controller in anyway?


It's a felicity 60amp CC