₦airaland Forum

sheyooo:
loool, the fact that you're asking means you don't know, i clearly put the year there as 2009 therefore it's w204.

Help people and stop being a troll

Wrong mention, field negro!

Saipro:
Would a picture be too much to ask for?

And by 65 feet elevation, you mean distance off the ground, right?

Yes distance off the ground, Will try and get a pic
as soon as time permits

or zeestone, u get pics ?

Saipro:
North-facing PV array?

Magnetic south; about 65 feet elevation !

kingreign:
c230 is it w202 or w203 or w204?

I bet he is hearing it for the 1st time . . doesn't even know the difference . . .

I must drive Benz by all means

Let me manage this corner and observe

^^^ care to share pictures of your “normal pro solar roof mounts” ?

Take a snapshot of your installation and post here; so we can work with facts and not guesswork

Thanks

sinistrian:
Ehen. Because with a max possible input of 17.66A from my array (each panel has 8.83A I_mp) I am sure the MPPT controller is already doing 'something' to get me to 20A output, just not enough. What could be the limiting factor(s)?

Your panels V_mp shuld be at 33. something. So in an ideal condition, with your 2 x 2 config
your input to the controller would be about: 67V18A (rough calculation)

Limiting factor 1: Battery bank . . . If your battery bank is a 48V one, there is little or no voltage headroom to convert excess voltage to ampere. If it is a 24V bank, should be sufficient enough to convert excess voltage to amperes; if a 12V bank, very cool.

Limiting factor 2: Faulty charge controller . . . that is limiting your output for whatever reason (incorrect battery profile selected, etc)
or losses due to bad wiring system.

NobleEngineer:
when I saw "engine replacement" in your post, i was shocked. To make it worse, hardly will you find a professional mechanic in this our town. I changed knock sensor, changed fuel, 2 full tanks...omo i give up.

"Engine replacement loading" . . . used to be one of Gazzuzz's favorite, should I say, quotes?

LOL

cleanshaven:
rocking Ntel here in ikeja

Pathetic

sinistrian:
@chris81964 @NiyiOmoIyunade and @makavele Is it strange to get 20A max from a 2x2 arrangement of 300W panels? That's the highest current i've seen today @ around 12:30pm and my batteries were about 57%, even after washing the dust off the panels daily. The panels are ground mounted (i didn't have any other option, landlord issues) and the Charge controller is a Fangpusun MPPT 100|50.

Strange !!!
You should be between 25-30 A during this hazy period

Ijeoma660:
I parallel-ed all four panels.

I thought you had an MPPT CC; why did you have to parallel all four panels
My guess was good then!

Ijeoma660:
@makavele
Please what is the size of your array?

Presently sitting @ 1.8 kWp and counting . . . *small though*

Ijeoma660:
I successfully mounted my pv panels and here are my CC readings today.

The first pix at about 7.00am and the second around 11.42am

Any useful comments will be appreciated

Are you sure that CC is an MPPT type ?
By my calculations, it is stepping down the voltage to battery level ( and multiplying by charging amperes) to give Power..
Without upping the charging current using the extra voltage . . . Maybe I didn't check it well, will do again . . .

Not bad at all, but in the end, how did you string the panels?

By 7 A.M, I am already seeing circa 150 Watts, though on a larger array !!

It's called pinging caused by early detonation . . .

Bad fuel yeah . .

Bad knock sensor . . yeah

Bad oil type . . yeah


All in all, engine replacement loading . . . 30%

Gazzuzz . . see food oh

rawdpiper:
Forgot to tell to grab the screenshot.

tried to check the data but unfortunately the mifi i used doesn't have that specific data log . . .
couldn't find it anywhere in the portal

rawdpiper:
When you're browsing during the midnight on your Swift device, could you please log in to your modem configuration portal(192.168.0.1) and check your modem status where you have SINR, RSRQ, RSRP and the likes. I'd appreciate if you could check it when your download speed is around 3MB/s. Check the attached picture

Tonight ok . . .

Mrviktor:
Wow.. When does d unlimited start.. 10 till 6 the next day bah.. This plan would really suit my Xbox one needs.

11 to 8

Mrviktor:
Wow.. When does d unlimited start.. 10 till 6 the next day bah.. This plan would really suit my Xbox one needs.

My plan is from 11pm till 8am

wane01:
Bro do u knw anyone who is willing to sell swift sim or where i can get it

Any swift office . . 8k or so

Mrviktor:
Am planning on buying the 4g runner.. Update me on the unlimited glitch... Is it still blazing.. Is d speed limited.. ND how many gigs have u used (after the subscription ended)

Still blazing, i don't know but i guess so . . only tried it yesterday, will av to confirm today to know

speed was unlimited, i was downloading at 3MB/s

used about 12GB last night

I wonder oh

hardywaltz:
. . .

Problem:
1. What rate of charge controller will be suitable for (12panels of 300w - 3600w, the Vmp is 31.8v and Imp 9.43A) to effectively charge a sytem of 48v/400amh (19200w). The CC should have allowance for possible increase in capacity of PV and can be hocked up to the internet.

The Outback 80A MPPT is good enough for your current panels . . . It will handle it like hot knife through butter.
I don't know about others; but for me I'd do a 3S4P configuration i.e 95.4V by 37.2A because the FlexMax 80 has a VOC of 150V
Next time though, please use the Panel's Voc n Isc for calculations to be on a safer side.

2. My inverter charges with a current of 11.4A and 53.4v and it takes it almost 16hrs to fully charge the batteries (4 x 12v x 200amps – 48v/200amh) is this normal?

The inverter supplies 48V nominal at 11.4A . . so charging a 200Ah battery that is fully depleted will take more than 200/11.4 hours = 17.5 hours (accounting for delayed absorb and float). Are you fully depleting your batteries? I guess no, since you have constant power, if so, then I am not sure the inverter is outputting 11.4A correctly.

3. Are there inverters with higher charging current? (Coz my older analogue inverters had 20A charging - 24v)

Yes, e.g. Felicity 5Kva 48V inverter charges at 30A; about 3 times faster than yours.

4. Since I have PHED light for close to 21hrs a day will the batteries be overcharged (boil) constantly when I connect it to the solar system?

No, once batteries are full, they will enter into float and can stay in float for 10 years; no shaking !!!

5. Where I intend to mount the panels there seems to be a shadow on it from 8am – 9am and from 3.30pm – 5pm would it be wise if I changed the intended location?

8am - 9am can be ignored, but 3.30pm to 5pm is way too long . . . If you continue with the same location, you would lose power noticeably; because shading tends to drag down the other panels in a string. Best look for another location.

Thanks for ur responses.

Responses in bold above

chuchwhite:
My oga if u no believe leave am .. men still dey enjoy unlimited browsing after the 3gig has finish.. if urs no work sorry.... e no stop mine.. u say my screenshot no prove anything.. u need to look at the gig used.. compare both screenshot of what i showed u .. u will see an increase on the second screenshot.. ciao

Let it rest . . . Guess it's a glitch, works for some, doesn't for others.

Enjoy and goodnight !

Edit: I just loaded about N155 into the balance . . voila it started browsing . . . so it didn't work on zero balance.

nani667:
I have been using swift for ages ... still using it... so I know ... and I have told you how it is... it is left for you to believe it not ...

Meanwhile, was calling them really necessary, it may be that they don't even know that it works for us like that... Abeg no use ya own spoil our flexing sha... no go cast men Parrols... before you go make them revise the Unlimited plans

if you no wan believe after all the screenshots we have provided then rest for the matter..

It's not an issue of not believing or not . . its' an issue of reality....

I said it isn't working . . . *at least for me* or do you want a youtube video . .

my subscription still has more than 18 days to go; but out of data; Zero credit.

Midnight, I turn it on to browse, it says "browsing not permitted".. login into portal to recharge or top up . . .

So until I see a youtube feed of you showing me it works . . I might not be satisfied with your answer. . .

The last screenshot shows N150 naira in the account', that is not zero credit.

I am talking about N0.00 account balance; 0.0GB data balance and still under 1 month validity.

Too many ppl lie on forums these days just to prove a point !

Besides, its not even about me. Its about the guy who asked.

Tomorrow, he goes on to buy the modem and subscribe and when out of data, it won't work !!!

Then he comes here to lament that he has been deceived.

NiyiOmoIyunade:
I am trying to refresh my memory on the history and original issues around this discussion.

If I recall correctly, you had an hybrid inverter whose solar input was capped at 60vdc and this limited your ability to do 2x2 series config with your 300w panels and reap MPPT benefits yes?

If you buy an MPPT controller now and retain your 24v nominal battery voltage, it will make a very big difference whether you do 2x2 series config for your 300w panels (you will reap MPPT benefits because you have some voltage headroom) or you do 1x4 parallel config (if you do this with an MPPT controller while retaining 24v nominal battery bank, you leave no voltage headroom and MAY get poor results even worse than PWM)

MPPT can only provide battery 'boost' during the bulk phase of charging when there is some 'voltage headroom' i.e. excess panel voltage (excess voltage means panel voltage higher than the voltage that is required to charge your batteries) that can be converted into useful battery charging current.

Summary is you need a minimum of 2x2 series config for your 300w panels if you want to use an MPPT controller with a 24v nominal battery bank

You also have to consider if you are going to make any upgrades in the near future - it might be better to go for an MPPT with 150vdc cap so that you have some leeway for future upgrades.

Nice post but it seems you are forgetting something, The current isnt constant. If he does 1 x 4 on the 24V battery bank, the voltage output os lower for headroom but the current is now higher, so practically almost the same thing.

If he does 2 x 2 , the current is lower, voltage goes up and excess is converted to current when the voltage is stepped down to battery bank’s voltage.

By the laws of conservation of energy, we get the same results whether by 2 x 2 or 1 x 4 or 4 x 1
The result is the power output in the end.

The only reason why more voltage is preffered
as headroom over higher current is to reduce losses in the wires and for safety purposes.

But thats when the installation is sizeable, for an an entry installation as his; the losses are negligible as long as he uses the same mppt in both scenarios !

Barezzi:
Amazon.com
I think they're made by Blue Sea systems.

You garrit !!!

sinistrian:
So I've decided to return my hybrid inverter to get a MustPower 3kva and Fangpusun 100/50 MPPT controller. My calculations show that whether i do 2x2 or 1x4 for four 300W panels, the resulting current output will still be the same for the charge controller. Is this correct?

The current would vary based on panel arrangement but the resulting power output would be close; very close !
At that point, i take it to b negligible !

nani667:
As long as your Subscription hasn't reached the expiry date, if you subscribed to any Plan that has an unlimited option it will browse free and Unlimited at the Specified time even after Your Data has run out ✔

I am in the same situation... my Data ran out some days back but my Plan comes with an "Unlimited from 12 to 6am" option , so every midnight I still flex Epic High-speed Unlimited downloads even though my Data has run out

didnt work for me calling again

edit: just called again to confirm cos i am out of data; and they said i must top up as it cant work on zero credit!
So whom do we belive now ?

Barezzi:
This makavele dude, you for fit to be motor park chairman i swear!
Barking down everyone...lol

Take a break, no burst blood vessel on top potentiometer.

You remember the lyrics to that M.I.’s number: Safe ?

For peace to reign , let somebody volunteer a souer charger. My battery absorb voltage is 14.1v
Let somebody adjust it “as easy as it is” to 14.1v absorb and 13.5v float.
I promise to buy back that souer charger for triple the market price.

And for that, the person has to just open it up, twist a potentiometer with a scewdriver, close it back up and bring it here!!!

End of discussion !!!!