₦airaland Forum

kiekie1:
This 374L made in Romania freezer produces Frost / block like crazy and is also energy efficient.. You guys can give it a try OK !

I own a small version of it and so far so good. It is on 24/7.

davodyguy:
Hello house.

Please advice.

Between Mppt and PmW charge controller, which should I use and why?

Thanks

If you can afford it a good quality MPPT. If your application does not require deep discharge of your batteries then a pwm will do the job. More tricky to work with but they do the job.

davodyguy:
200 watts panels x 4 made by frames

How many amps charge controller would work for a parallel connection for the 4 panels to charge 2 now 12 v 200amps batteries?

If you have a good quality inverter keep it. You have 800 Watts in panels. Divide by your inverter voltage. That will give you the size of controller you need.

Dam5reey:
Yes, this will make your battery system 24 Voltage.. and capacity 200Ah.. Rather than your 12V 400Ah.
however, you will need to change the Inverter to 24V..

Since your Panel is 800Watts.. you can use a 24V 40A MPPT controller, which will take 1040Watts panel at 24V

He has a 12 V inverter. Why should he change the inverter?

pranil:
Gentelmen

Please note that Grid Tie is illegal in Nigeria for both legal and technical reasons. Unless the rules for net metering and micorgrids are published and implemented wrong use of grid tie inverter can kill somebody !

A grid tied inverter is not illegal in Nigeria. Feeding back to the grid is what is not allowed. You can use a string inverter / grid tied inverter that works in conjunction with your battery inverter. They are called AC coupled systems. All the production is consumed or used the charge your batteries. The Battery inverter has to be able to do frequency shifting for it to work. There are a few people within this forum that do it using SMA Inverters and have yet to kill anyone.

Saipro:
Would you by any chance be disposing of your T105 batteries?

The batteries in the video are not mine. However we will be doing an upgrade in a month. I will put them up for sale

We have been working on these batteries for over 10 days. Did we save them. Watch the final video of the we don enter one chance series

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

efuro:

@ Chris (Dr. Solar)

one chance batteries 1-4 is
quite interesting. keep up the good work.

Thank you bros. I did a new one today. Happier face today. I was able to run my 2 hp pumping machine for 5 minutes with only 400 watts coming from my PV. It is recovering slowly. I am not doing with them what I did with my T105's.

https://www.youtube.com/watch?v=FDj5yNsRcTI

bodeface:
Hello house,
Anyone with experience on Schneider product should help out on this;

Schneider Conext SW4024 Inverter tripping on F49 fault (DC Over Voltage), the battery bank is a set of eight nos of 200AH wired for 24VDC, I have monitored the charging voltage while the inverter is charging not to exceed 26.1VDC and the battery bank voltage sitting pretty at about 24.8VDC, however once the utility power is applied to the inverter after charging for about 2-3 mins will trip on F49 fault.

Has anyone experienced this before? Appreciate all comments

Send an email to ksolaiya@atlanticwastepower.com tell him Dr Solar sent you. What load are you running on the inverter.