kiekie1:
Nevertheless, most client prefers hybrid systems even after vivid orientation .. It's well !

Barezzi:
Orientation ke! This is akin to askin folks to quit buying Toyota's, cos of several recalls by the manufacture. Buy Honda instead

kiekie1:
Its sad to see this newly commissioned ipower 5kva 48v power system develop "fault" in less than 2 weeks of installation. It powers less than 950w load on 2kw PV array .
The major disadvantages of this is whilst on "warranty repair" ;
- solar array remains dormant
- client can't enjoy inverter set up.
- client remains sceptic problem might persist.

Nevertheless, most client prefers hybrid systems even after vivid orientation .. It's well !

tsmall:


The truth is you can only advice.

If you know you know. My piece.

kiekie1:


HURRY! DISCOUNTED PRICES ON SUNSHINE SOLAR PANELS !!

250w mono. N42,000 
200w mono. N35,000
150w mono. N27,000


300w poly. N47,000
280w poly. N45,000
260w poly. N40,000
250w poly. N38,000
200w poly. N32,000
150w poly. N26,000
130w poly. N23,000

Contact :
Smartcell global services
081-350-31951

kiekie1:
Its sad to see this newly commissioned ipower 5kva 48v power system develop "fault" in less than 2 weeks of installation. It powers less than 950w load on 2kw PV array .
The major disadvantages of this is whilst on "warranty repair" ;
- solar array remains dormant
- client can't enjoy inverter set up.
- client remains sceptic problem might persist.

Nevertheless, most client prefers hybrid systems even after vivid orientation .. It's well !

mcTrinity:

I also noticed something that shocks me with this hybrid system. At any point in time, If the load capacity becomes less than the solar power, the Inverter won't charge the battery. there were times that the solar power was showing around 2.7kw but the load capacity was around 2.9kw and the charger wasn't coming on. it only comes on once the solar power excess that of the load. Can you just imagine that!!! 2.7kw and battery won't charge.!!! this was monitored for 4hrs and the inverter charger keeps coming on and off depending on whether the solar power is greater or less than the load capacity.

mcTrinity:


2 weeks plenty.... I know of a radio station where 3# of that ipower 5kva with 5.7kw Solar on each were installed. Told the engineer that it's a bad idea to use that kind of set up for an off grid radio station.

immediately the systems were powered, one of the inverters was blown. had some liquid-like fluid coming out from the inverter.
To cut the whole story short, after the inverter was repaired and returned, the same incident repeated again. After many arguing, he bought an external CC (of course from his pocket, not from the radio station)...

I also noticed something that shocks me with this hybrid system. At any point in time, If the load capacity becomes less than the solar power, the Inverter won't charge the battery. there were times that the solar power was showing around 2.7kw but the load capacity was around 2.9kw and the charger wasn't coming on. it only comes on once the solar power excess that of the load. Can you just imagine that!!! 2.7kw and battery won't charge.!!! this was monitored for 4hrs and the inverter charger keeps coming on and off depending on whether the solar power is greater or less than the load capacity.

After everything, the engineer got another external CC (that's 2 now) while he left one Inverter to be solely hybrid and he subsequently reduced the load to less than 2kw.

It was a bitter experience for the supposedly engineer and even though I tried to advice him ab initio the installation, he didn't listen and I didn't expect him to; after all I only happened to be there for a different purpose but I decided to stay and observe. so how can a solar engineer take advice from an observer?? lolz
I really learnt from that his mistake

So, PERSONALLY for ME, hybrid system is a no go area.

pranil:


1. The CC has better efficiency on lower voltages( 2 in series ) closely matching the battery nominal and will run cooler as a result. While higher voltages ( 3 in series) will mean lower cable losses and fewer cables in the junction box. The CC will wake up earlier and sleep later.
Normally if you are running CC close to max input use 2 in series ( otherwise you will lose significant power in the afternoon). if your panels
are undersized then 3 in series as a general thumb rule

2. Definitely combiner box with surge protection - buy the readymade( highly recommend midnight solar) or make yourself but definitely no twisting things together. It is much easier to troubleshoot the panels when they are misbehaving

3. see the attached file and calculate the ratings. Basically the rated current x0.8 ( correction for ambient temp) so 4 mm2 will carry 25 amps , 6 mm2 -33 and 10 mm2 -40

Based on your configuration use the correct size 4 or 6 mm2 from PV to Junction box and then from Junction box to CC suitably sized cable

Best luck

nonoski:


Thank you for response.
So it will be better to connect the 12Nr 300w
in 2 series to get 6 strings?

Please between Fangpusun FM 80A MPPT and VICTRON ENERGY BLUESOLAR MPPT 70A which is has a better algorithm and can be hocked up to the internet .

Thank you

pranil:


personally, I have not used Fangpusun but I am using Victron chare controller inverters BMV etc and they are very good sturdy products. The Victron software development is legendary with access to open source and user forums. If you like to tinker and like remote monitoring get Victron. By adding a 35 USD pie and their opensource venus software you get access to VRM portal which helps you keep logs and performance data up to 5 years or more

Have a look at my website on what is possible. ( be sure to click on the advanced tab to see all graphs)

https://vrm.victronenergy.com/installation/12623/share/97b72cbb

https://github.com/victronenergy/venus/wiki/raspberrypi-install-venus-image

DMerciful:
So I thought when I opted for 1hp AC only to realise its up-to 1200w.The 1hp is only compressor... what about the fan that cools the radiator? What about the fan in the inside unit for circulation? Energy nor easy o

ebocoms:
Good morning All,

Please i need Epsolar Box-WIFI-01 and Communication Cable wire CC-RJ45-3.81-150U RS-232 RS-485 RJ45. Anyone in house have one for sale or knows where I can it in Lagos?

See attached pix

bodejohn:
Still available...

mcTrinity:


2 weeks plenty.... I know of a radio station where 3# of that ipower 5kva with 5.7kw Solar on each were installed. Told the engineer that it's a bad idea to use that kind of set up for an off grid radio station.

immediately the systems were powered, one of the inverters was blown. had some liquid-like fluid coming out from the inverter.
To cut the whole story short, after the inverter was repaired and returned, the same incident repeated again. After many arguing, he bought an external CC (of course from his pocket, not from the radio station)...

I also noticed something that shocks me with this hybrid system. At any point in time, If the load capacity becomes less than the solar power, the Inverter won't charge the battery. there were times that the solar power was showing around 2.7kw but the load capacity was around 2.9kw and the charger wasn't coming on. it only comes on once the solar power excess that of the load. Can you just imagine that!!! 2.7kw and battery won't charge.!!! this was monitored for 4hrs and the inverter charger keeps coming on and off depending on whether the solar power is greater or less than the load capacity.

After everything, the engineer got another external CC (that's 2 now) while he left one Inverter to be solely hybrid and he subsequently reduced the load to less than 2kw.

It was a bitter experience for the supposedly engineer and even though I tried to advice him ab initio the installation, he didn't listen and I didn't expect him to; after all I only happened to be there for a different purpose but I decided to stay and observe. so how can a solar engineer take advice from an observer?? lolz
I really learnt from that his mistake

So, PERSONALLY for ME, hybrid system is a no go area.

NiyiOmoIyunade:
Good day Oga GeorgeD.

While we are at it please would you happen to know what the recommended/ideal absorb voltage for Quanta batteries is.

I have read 13.8volts as the 'freshening charge' on the spec sheet and also the Amaron Quanta website but I struggle to believe this to be true.

In real life I use 14.1v or 14 2v as the absorb setpoint for Quanta batteries at client locations but I always lose some sleep thinking whether I may be overcharging their batteries.

mcTrinity:
See below

NiyiOmoIyunade:
Many thanks for this Sir.

I myself have seen a similar document that made me more confused because it mentioned 13.8v boost voltage as the upper cap

Please how do you interprete the boost voltage guidance especially the upper/over voltage limit?

Is it 13.8v per 12v battery or between 13.8v to 14.2v per 12v battery?

mcTrinity:


well, I don't think it was stated as a range. So, I wouldn't say if it means between 13.8v and 14.2v.

if they say that 13.8v is boost voltage but 14.2v is the "Charge over voltage cut off point", it means that anything above 13.8v is not too good for the battery and you shouldn't even think of doing above 14.1v

So, I think it's just 13.8v for a 12v system.

My point of view, though

Cheers sir

NiyiOmoIyunade:
This is my struggle - per conventional wisdom lead acid batteries require an absorb voltage of at least 14volts especially when used in a deep cycle application. Why do the Quanta folks think an absorb voltage as low as 13.8volts is best for their own AGM battery?

NiyiOmoIyunade:
This is my struggle - per conventional wisdom lead acid batteries require an absorb voltage of at least 14volts especially when used in a deep cycle application. Why do the Quanta folks think an absorb voltage as low as 13.8volts is best for their own AGM battery?

mcTrinity:


I have no idea my brother... I've sent them an enquiry about something last 2 weeks but no reply yet. you can try sending them one and see if they'll respond.

nevertheless, every manufacturer have their reasons for recommending their values.
if I'm not mistaken, Luminous own is 14.1-14.4v so also is Safepower. mpower hybrid gel is 14.4-15.0v. they're stamped on their batteries.

Quanta recommended a charging current of 10-25% rated capacity whereas Luminous & Safepower recommended 30% maximum

so, every brand with their recommendations I guess

Cheers

bodejohn:


Dear friends,

I have the following items available for sale.

12/24/48V 45Amps TriStar MPPT CC complete with displays - 2pcs


Items are in good condition and comes with 3 months warranty.

Location: Ibadan

Contact: WhatsApp only - 09078802022

GeorgeD1:


hello bodejohn,
you've been pushing these two mppt ccs for a while now. is there any particular reason
why you don't want to disclose your offer price? i think pricing is one strong incentive you
can use in wooing any undecided customer who might be interested in patronising your
wares. beyond pictures, affix a price tag and make it negotiable - in case you're worried
that your price would scare away potential buyers.
just my two cents.

bodejohn:


Thanks George, I don't want the price negotiations to derail the thread and since they are premium equipment, I don't want to also scare my customers... smiles.

Oshomo12:


We know it's a premium cc and we are aware of the price. You still need to state the price. Do have nice day.

Oshomo12:


We know it's a premium cc and we are aware of the price. You still need to state the price. Do have nice day.

Ijeoma660:
My surprise is not just about my tripping breakers alone as you all are right about breaker undersized capacity. Intact the first thing too on my mind was solar flares. Wikipedia to the rescue.

My main issue is that my CC is rated as 3KW, 60A mppt CC.
At 581w I am already having 42Amps.

What's gonna happen at the 3kw mark?

DaniellaDokubo:
Hello,

I need a 2.4kva mercury inverter fairly used for purchase.

I want to experiment with it and if it works out then we have a deal. Kindly PM if you have and you live in Lagos.

Thanks.