Obimind1:

Epever 60 amp cc Itracer.

Did you get in touch with Epever? If you got it brand new. Get in touch with them they are quite responsive and do honor their warranty. I know a friend on here who had similar issues with his Epever and I have seen couple of post online too. All where resolved sha. My first controller was a Epever RN series. The meter developed a fault (which didn't affect the controller or charging functionality at all) besides that never had issues with their controllers.

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Obimind1:

Epever 60 amp cc Itracer.

I tracer is supposed to be industrial line ( more rugged) than tracer A .

I am happy that my Tracer A has not blown in last one week I have installed. I checked on it every few hours first few days. But then it is lightly loaded ( 600 Watt)

pranil:


I tracer is supposed to be industrial line ( more rugged) than tracer A .

I am happy that my Tracer A has not blown in last one week I have installed. I checked on it every few hours first few days. But then it is lightly loaded ( 600 Watt)

Yes you are right on your observation . Mine has been functioning well even at 2400w pv array @24v !

Obimind1:
I'm back to my pwm which has been my saving grace for some months now pending when I'll be ready to go for another mppt.

Mr Obi, sorry for the mppt issue .. I was thinking you finally mailed ep solar as discussed then . I actually stopped selling E tracer for some personal reasons & felt you will enjoy I tracer like most clients do .. Once again , sorry Bro !

kiekie1:


Mr Obi, sorry for the mppt issue .. I was thinking you finally mailed ep solar as discussed then . I actually stopped selling E tracer for some personal reasons & felt you will enjoy I tracer like most clients do .. Once again , sorry Bro !

Impressive

kiekie1:


Mr Obi, sorry for the mppt issue .. I was thinking you finally mailed ep solar as discussed then . I actually stopped selling E tracer for some personal reasons & felt you will enjoy I tracer like most clients do .. Once again , sorry Bro !

I didn't mail epsolar. I noticed that the problem was with the board of the mppt which is the heart of the cc. If there is any way I can reach ep solar, honestly I wouldn't mind. After all they is no crime in trying. A member on this forum told me how his board was changed and his epsolar came back to life, but the truth there is that he bought his own ep solar cc outside the shores of Nigeria. I don't know if their warranty really works in Nigeria.

Obimind1:

I didn't mail epsolar. I noticed that the problem was with the board of the mppt which is the heart of the cc. If there is any way I can reach ep solar, honestly I wouldn't mind. After all they is no crime in trying. A member on this forum told me how his board was changed and his epsolar came back to life, but the truth there is that he bought his own ep solar cc outside the shores of Nigeria. I don't know if their warranty really works in Nigeria.

They do respect their warranty even here in Nigeria. I once had issues with their controller (The meter) and they resolved the matter. You just need to send them proof of purchase and answer their further question on the problem.

idsolar:


Hello house. I still have these 2 charge controllers for sale.

1.Roysolar charge controller 12/24v 60amp
- N35,000

2. Roysolar 12/24v 20amp - N5,000

Interested? Call/sms/whasapp 08033735359.

Still available

idsolar:
Harmattan is here my people. I hv washed my panels twice this oct especially if u face/near untared road. Chai d sun power must be harvested by force by fire

Make mine thrice. Poor road maintenance has turned the road in front of my house to a dust-storm source. Amazingly, I had overcast skies today. Thought cloudy skies were behind us.

Reprobate:



the Nigerian culture of treating warranty issues like a big nuisance/inconvenience is quite annoying.
hhope kiekie mans up and rises up to the challaenge - though I doubt, Nigerian business and warranty issues na very long thing.
only a&e dunamis has ever wowed me on warranty issues, even prag ,the mother company is no way close

epSolar changed my iTracer IT6415ND when I promised to ensure their products become unpopular on the market. Neither middleman nor importer were able to help when my first unit went bad. Decided to liaise directly with the parent company and make direct calls to the sales manager and tech support manager. A friend was in China so a replacement was sent through him.

Bought numerous units thereafter. The closest I've had to a problem after the initial one was one with a fading display unit. Proved to be a pretty reliable brand (does marginally over-report harvest and is slower to scan the array than premium brands). Would I buy another unit? Oh, I recently just got another for a friend!

Will anyone in this country honour the warranty on the label? Most definitely not. Why not? We don't hold them accountable. In my case, it became easier to deal with officials halfway across the world than people in Lagos.

liquidcrystal73:
Dead controller 24 hours into test-run . . .

Please advise

CC: Pranil, bigrovar, zeestone99, pranil, DMerciful, Saipro, Kiekie1

There's something which might be worth the try. Let's offer some free advice from personal experience: I had a similar problem once. It was the unit I gave my dad. No amount of troubleshooting would make it work. No error asides that a seemingly bad controller. I remembered MPPT usually requires varying headroom to work. The kicker? The CC had been working perfectly for about 6 months. Anyway, I increased the string size thus VoC, from 38V to 76V (for a 24V nominal bank). And that did it! Why? Heat and dust usually lower VoC in harmattan. And MPP is significantly lower than VoC. The incoming voltage difference just wasn't enough to drive the MPPT of the CC. For fun, a few months later when the rains began, I reverted the connection and the CC kept working (VoC was higher).

Summary: if your CC allows for up to 100V VoC, I recommend running your panels in strings of two. Let's see if it makes a difference. But save that for a last resort fix. For now, trouble your warranty guys. If possible, let them do the workarounds with you. They should come with their own fix-it crew to prove whatever they need to.

liquidcrystal73:


Of course I am calm, else I would have escalated it more than this.
Well, he gave me his Engineer's contact and I have way-billed it to him.
The engineer will take a look at it and from there we'll know stage 2.
I'll keep the house updated.

Sorry for my late response. There are other options to explore before having someone tinker with it. I'm particularly sceptical of having devices which can go up in flames being tinkered with when I can't see what's being done. True to form, I take snapshots of all panels and components on their way to and from the fix-it shop. Otherwise, a replacement is what gets me sleeping with ease at night.

bigrovar:


PWM or MPPT was a major decision I had to make when starting my offgrid Solar journey. After much thought and research I went with an mppt because I already had a 24v solar panel while my battery system was 12v. Using a PWM meant I would be losing close to half my PV generation potential. Also the distance between my PV and controller at 18meters meant I had to reduce losses and best way to do that was to increase voltage going to cc. Most effective way to do this was use string panel in series again MPPT controller made this a no brainer. The cost of getting an MPPT allowed me save on wires and increased the economic value derived from my system over using a PWM. It all depends on system designs.

....

The voltage difference could be all the problem liquidcrystal73 is experiencing. Sorry for the repeat reply but I'm reading and replying along. Been away a while.

GeorgeD1:


personally i think the advantages of mppt cc over pwm has been severely over-hyped and some of us here
(myself inclusive) are to blame. much as mppt has its place in the scheme of things when it comes to solar charging,
but so also does pwm. my first cc was a tristar pwm 45a and it served me doggedly for over two years without issues.
my batteries were well maintained over this period and i never had any reason to complain. i only set it aside albeit
reluctantly when i wanted to upgrade my array and discovered that cc output fell far short of what my panels would be
pushing out.

....

I wouldn't quite say over-hyped. Let's just say MPPT isn't for everyone. And it definitely isn't for every installation. If your batteries and panels are closely matched in voltage and transmission distance losses won't have you buying cables thick as your wrist, by all means, PWM all the way. Especially for arrays less than 2kW (definitely for arrays less than 1kW). The pulsing helps prevent sulphation in ways you hardly read of. Asides other smaller advantages. In fact, if you have all the aforementioned factors going for you and you have space to place more panels, use the cash difference to procure more PV panels. Of course, you know why PWM won't make sense when you go over 2kW of PV panels.

pranil:


I tracer is supposed to be industrial line ( more rugged) than tracer A .

I am happy that my Tracer A has not blown in last one week I have installed. I checked on it every few hours first few days. But then it is lightly loaded ( 600 Watt)

kiekie1:


Mr Obi, sorry for the mppt issue .. I was thinking you finally mailed ep solar as discussed then . I actually stopped selling E tracer for some personal reasons & felt you will enjoy I tracer like most clients do .. Once again , sorry Bro !

The manly thing to do.
Also the sensible thing to as the seller.
Your reputation remains intact.
The rest can be sorted out amicably behind the scenes (just as the initial transaction went).
I have nothing more to contribute.
Recess is on.

Saipro:




Summary: if your CC allows for up to 100V VoC, I recommend running your panels in strings of two. Let's see if it makes a difference. But save that for a last resort fix. For now, trouble your warranty guys. If possible, let them do the workarounds with you. They should come with their own fix-it crew to prove whatever they need to.

I fully second that opinion For MPPT always try to go higher than battery voltage( Absorb setpoint) by at least 5-10 Volts to ensure charging in low light conditions. But also note that there is no extra advantage in going higher than required. All the charge controllers are less efficient at higher input voltage although the difference is few percentage point not so visible in small installations

e.g. attached is the efficiency curves for EPEVER at different PV voltages

pranil:


I fully second that opinion For MPPT always try to go higher than battery voltage( Absorb setpoint) by at least 5-10 Volts to ensure charging in low light conditions. But also note that there is no extra advantage in going higher than required. All the charge controllers are less efficient at higher input voltage although the difference is few percentage point not so visible in small installations

Recess suspended.
The phrase in bold is crucial in small installations. Do not forget that. You could lose way more in transmission losses while trying to get the optimal PV voltage.

Dependent on nominal bank voltage. For 48V, you need up to 20V headroom for many controllers else you'd have inexplicably low harvest till the sun is way up in the sky. For 96V, at least 30V. I tried firing up a nominal 120V bank with VoC of 160V. Of course it didn't charge one bit with MPPT. Made me laugh.
Been doing a lot of toying around lately. Stuff you wouldn't read in books. I'm sure you're doing the same.

Regarding efficiency, it seems most of the loss is due to heat loss from the conversion process (CCs run hotter the higher the conversion potential difference). Necessary for long wire runs or large PV arrays. I downsized my bank voltage to 24V (rearrangement) recently to keep a straying battery in check. My Midnite Classic has been buzzing like a bee since then.

pranil:
How do I contact Prag technical fellows?
Anybody can give me an email or phone. I have a 5 KW Prag which mentions Settings for LIfepo4 in manual . I would like more details on it as I plan to install LIfepo4 but worried about absorption times. The full charge and discharge voltages match with my batteries exactly .

Hello Pranil, which lifepo4 battery system did u finally purchase and have u commissioned it yet?

My Oga's in the House, I bow.

1. A client just bought a 2000kVA Gas generator to run his manufacturing plant. He presently uses a 1500kVA gas gen to run his existing facility.
2. Now, since the new Gas gen has not yet left for Nigeria, he is asking me to propose a solar system so he can consider cancelling the purchase and instead channel the funds towards a massive solar system.
3. Now, I have perfected the Solar array and battery bank design but I am having issues with finding an inverter brand that can do the job. I know finding a standalone 2000kVA inverter may be tough so I am open to cascading multiple units to attain the total kVA I seek.
So far, all the inverters I am seeing are Grid-Tie. Hence, since we all know the Grid is as good as non existent, they won't work unless I begin to explore doing AC Coupling with them.

I have checked out SMA but most stuff I see there are Grid-Tied. Please help will be appreciated.

Good day friends.

Does anybody here have a 1.5HP or 2.0HP Solar Submersible Pump for sale?

tsmall:


Still available ..Thanks for the calls

We Repair Magnum, Outback, Xantrex, Schneider Inverter And Spare Parts Supply.

tsmall:


We Repair Magnum, Outback, Xantrex, Schneider Inverter And Spare Parts Supply.

What of sukam or microtek inverters?

@Saipro . .


I saw your comments and thoughtful, they are! But unfortunately, didn't work in my scenario
because it was only powering a 12V system and at failure, the voltage coming from the panels were about 18v roof-line
The CC wasnt delivering amps, which meant zero charge but yet, it was raising the battery voltage from 13.7 float to 16V
and the CC would disconnect with an OVD (over voltage disconnect) warning !!
The warning stayed put, until i manually disconnected the CC from Panels via the breaker.
Battery voltage went back to 13.8 thereabouts (float)
On flipping the breaker back to the ON position . . . whilst zero amps still displaying, CC would raise the battery voltage again to 16V, creating the OVD warning again. Until I brought out the PWM to the rescue.

Update:
Spoke with the Engineer who said he had fixed it.What he did to fix it, I don't know but he confirmed it was now working perfectly and he has test-ran it with panels and batteries and all is fine. How long it would last, I do not know.
Would my house blow up while I am asleep . . . Only God knows! The Engineer said his charge is 10,000
Spoke to Kiekie and said I can only pay 6,000.
Take note: 10,000 is seemingly too minute an amount to lose sleep over;
but Kiekei1 has to man-up and take responsibility too. So being a very nice person, I only offered to pay 6,000 to the Engineer
If the Engineer refuses to accept it, KieKie would have to balance him 4,000 or he could speak to his Engineer to accept it (they are friends)
But Kiekie would go on to narrate how he blah blah blah and blah . . .and yes, he talks too damn much for a man! For someone who claims he is very busy, his calls are nothing less than 15 minutes at a stretch.
He went on to narrate how "he killed a chicken, and the chicken resurrected inside the soup . . and he killed a bird, and the bird's mom flew away' . . SMH seriously!
Well, I called the engineer again and he said, he wont accept 6k, obviously Kiekie didn't want to balance the 4k.. . so he said, he will accept 8k
I said OK, send me your bank details, he has sent it and I am going to pay him now.
I have arranged a courier service to go pick it up from his office and make an express delivery to me.
If you add the total cost spent in sending it to the engineer, paying him and sending it back to me .. It would have gotten a 60A mppt of Aliexpress and or a 40A one on Amazon and I would have had rest of mind about warranties.
As a prime member that I am on Amazon, I only need to send video proof and get a replacement without returning the bad item.
So I tried to be penny wise, and ended up being pound foolish.
Would I deal with Kiekei again? Yes, only on items 2,000 and below.
Would I recommend him? NEVER
Is he honest? NO, whilst appearing honest, he is sly, shady and self-centered.
Does he like to refund or share the bills? NO
Does he want your money? YES
Is he talkative? YES


If there are any other updates, i will share thanks.!!!

...

liquidcrystal73:



If there are any other updates, i will share thanks.!!!

With all due respect... This epistle was uncalled for...
Afterall the advice to resolve with him amicably.. you still went ahead.. and display this Haba..

You shouldn't destroy relationship and someone's reputation cos of one fairly used products.. A solution had been provided Already..

Electronics cannot be predicted..

Its your opinion, however relationship matters a lot... Peace...

Dam5reey:


With all due respect... This epistle was uncalled for...
Afterall the advice to resolve with him amicably.. you still went ahead.. and display this Haba..

You shouldn't destroy relationship and someone's reputation cos of one fairly used products.. A solution had been provided Already..

Electronics cannot be predicted..

Its your opinion, however relationship matters a lot... Peace...

Dont say what you are unsure of, sir
I did try to resolve it amicably, but his sly nature wont allow him
How else do you want me to do it?
Go on my knees and beg him
To refund or pick up the tab? or go dutch?
Whats with all the “ass-licking” Stop it!
If my claims were defamatory, he should come
and refute it !
Where I come from, silence means consent!
shalom !

Hmmm, na wa o.
This matter serious o!

In need of YOHAKO solar charge controller. 360volts 100amps

Barezzi:
Hmmm, na wa o.
This matter serious o!

This forum is a laudable place. We rarely have issues like dis.
We also know sir frank to be a good biz man. I think he should clear the air once and forall to make the forum healthy and possibly the best diy centre many members can reference.

Still available

DMerciful:
All,

i have 2 units of 6months used 200AH sukam batteries. reason for sale is due to upgrade by a client to 48v. The batteries are like brand new.
price is 70k each.

cheers