SolnergyPower:
Those wattages are still very high. We should be looking for something in the neighbourhood of 100W.

Thanks for sharing though.

kiekie1:


Hello powerstar / voltron series dosnt have 72v(6 units 12v) dc input systems .. He might be confusing 72v inverter with 2×2×2 battery bank systems.. Cheers !

Valto:
yes, i own one... rubitec I PowerStar 3000watts inverter.

zeestone99:


30amps 12/24v - 35k
60amps 12/24v - 45k

battleaxe:


Is the 400Ah stated in this formula at any particular voltage? 24V or 48V??

Thanks.

pranil:


I cam across an interesting formula in Powerforum Africa ( SA) Almost everybody blindly follows it. they call it 5,4,3 ( 5 KVA inverter), 400 Ah battery and 3KW solar - This is on average perfect for a family of husband wife and two children ling offgrid using all modern appliences

What made it interesting is after detailed calculations and measuring power of all my house to last milliwatt I had come to same conclusion 5 years back - off ocurse given prices then the 3 KW tool 3 years to achieve ( LOL)

Saipro:
I have 3 units of Trojan T105-RE (6V 225AH) batteries for sale. They're the same age (almost 2 years) and have never been cycled below 70% DoD.
Reason for sale: battery bank upgrade

Call O8O39612147

pranil:


Abuja or Lagos ?

Saipro:
I have 3 units of Trojan T105-RE (6V 225AH) batteries for sale. They're the same age (almost 2 years) and have never been cycled below 70% DoD.
Reason for sale: battery bank upgrade

Call O8O39612147

bigrovar:

Interestingly the rainy season is some sort of paradox. It's when I usually record pick power both the south facing array and west facing array hit figures above and close to their rated power respectively. I guess it has to do with the combination of occasional clear skies and relative drop in temperature and how common the two tend to align during these season. I got the second array to Jul-Aug proof my system and so far it is working I get an average 5kwh daily generation. Rainy season can be brutal in the south days on days where the sun just go awol. I had to pinch myself sometimes that am not close to mordor lol. If I live down south. I will battery up my system to allow me survive at least 3 sunless days.

chris81964:
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

GeorgeD1:


refa,
you're very much on point. and that has been my beef with the trojan ind-17 6v battery being sold by solarshop:

http://www.solarshopnigeria.com/homepage/trojan-ind17-6-industrial-line-flooded-lead-acid-battery-1202ah.html

on the surface, it looks robust with a high amp-hour rating of 1202ah but on careful examination, this rating is
based on 100 hours. the question then is: why this deliberate deception? and for a price tag of 535k?

efuro:
Hello House
My inverter waste much of my precious battery power.

It’s my belief that DC watt is 92% of AC watt and current stays same whether DC or AC.
Can someone help with explanation why my inverter draws so much juice just to produce so little. For instance, it draws 11.60A@307W DC to produce 1.47A@247W AC to power load (of a Deep Freezer, 32” LCD + 2 Decoders, Newclime Ceiling Fan).
See readings at 8.59AM this morning.
For the time being, I installed DC watt meter at output of my Battery Bank and another just before my CC to read-off harvest directly. While AC watt meter to monitor my AC loads.

An experienced explanation will do my nerves good.
Thanks
(Meanwhile, my inverter idle state is just 27.7w and has good surge allowance when fridge and freezer compressor kicks.)

Ferdiwar:
Good morning house

Please I need your assistance, someone want to change his inverter and want to import it from USA and needs it to power;


5x 2HP AC (from 7pm to 9am)

5x water heater (3 hours at most a day)

2x deep freezes (270w and 120w nameplate) 24/7

2x fridges (300w and 130w nameplate) 24/7

Led bulbs
1x LED TV
1x DStv
1x sound system
(Max of 5hours/day)


Can 15kva power them all or should he go for 20kva. As he was previously using 10kva/48v inverter with it (with 24x 2v/1500Ah GasTon VRLA batteries) but got burnt.

Thanks.

bigbrovar:


Once again my reply to your post was eaten up my the stone age clobber Nairaland calls antispam. I got a ban for my effort. Nairaland has to be the only platform where contributors content producers get banned for posting educational stuff that drives more traffic to the site. It is a classic case of the disease that creeps in when you become a monopoly.... anyway I digress. My response has been reposted to my blog below in my signature

Oshomo12:


Thank you. More power less life span, less power taken out of the batteries more life span. Hope this is logical?

pranil:
Thats how a battery should be sold.

I am happy to buy from Smartcell everytime as he gets the technical details right and deliveries are prompt

Oshomo12:

I want to believe that these batteries are lead acid chemistry, so same cycle life applies to 80 and 50% DoD.

Saipro:


I'm in Ilorin. Tried for 2 nights without succes (using the red and white Fuji LNB. I switched to inverto black (quad) and I got the signal. I used the Avenger (twin) and the signal jumped to 63% on my 90cm dish, within 5 minutes of trying. Will return to my 1m dish tonight and try the Avenger on it.

Gben102:


Am also reside in ilorin, basin along taoheed road precisely. Pls, where can i get the inverto black (quad) lnb here in ilorin.

olatayoalabis:


Am also in Ilorin, which side you dey for Ilorin make i come help you.
But try the 9 e on a iron pipe, its more easier on a straight pole

Gben102:


Am using 1.8m dish. Fuji LNB with qsat 23 and am in kwara state ( North Central), How am i going to skew my LNB at 7 o'clock? Which position the LNB will face? Whenever i enter the frequency (11804 v 27500 ) the signal will come up 62% and if i scan it manually no channel will come out but if i blindscan it another channels will come out and AFN will not be there.

chris81964:

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

dapsyra:
There must have been a huge power surge in my area overnight. I woke up this morning to discover my Midnite Solar Surge Protection Device MNSPD300 completely damaged. Thanks to the MNSPD300, none of my gears was damaged.

The device was installed on the PHCN grid supply to the house 18months ago.

You are all invited to the survival party.

mank1234:
You need both surge arrester and voltage regulator. They are for different purposes.

Transfer time of relays in stabilizer is in milliseconds whereas lightening induced overvoltage occurs in microseconds. You're protected against overvoltage but not transient current when you use stabilizer.

His surge arrester got fried from prolong exposure to overvoltage which a stabilizer could have prevented. On the other hand, a stabilizer may be fried from a single lightening transient unlike a surge arrested which will only deteriorate.

Dam5reey:


If you system is above 150W panel... Think MPTT...


Alright let's start with conversion from panel to battery Efficiency.. PWM is 80% while MPTT is close to 100%
If a panel supply 100W PWM gives 80w... Cos you will have same current.. but your Extra voltage is wasted..
MPTT converts extra voltage to Current...

2. Cable sizing, example 3 150watts panel is 450watts.

if you use PWM higher cable guage is required you will use parallel connection meaning increase in current.. 18V @ 25.2A 8awg is required


with MPTT you can connect 3 150watts in series that will make 54V @ 8.4A you can use the 12awg or 10awg

DMerciful:
Space will create gap for airflow besides power loss due to temp is than 5%. While u may loose as much as 40% with wrong angles

Oshomo12:

I will disagree with u on this(less than 5%?). The experiment I carried out shows otherwise. I had two panels flat on the roof, with very little airflow. Between 12:30 and 1:00pm I was getting max of 9.4 amps. These panels should give me nothing less than 14amps( though the angle was around 26deg). I check d temp under the panels, it was very high. What I did was that I have my water pump connected to hoss, and I showered it on panels and the surrounding roof. This last for about 3mins, when I got inside to check the current I was pulling, I could see around 14.7amps! After some time, it went back to around 10 amps. This is what I observed, I want to believe that is more than 5%. The only thing I did was just to cool them down.

earthrealm:


though i hate 2 things about my 60a epsolar cc, especially the first point, its standard on MS n fangpusen CC

1. the log is not robust enough, it doesnt log daily kwh/ah harvest daily
2. its soc algorithm is wack, always wrong

mcTrinity:


Lolz... the SCC SOC algorithm is designed to read in inverse proportion to battery voltage (imagine!) ... I usually see readings like
SOC 45% at 50V
SOC 60% at 49V
SOC 95% at 47V
SOC 100% at 46V.... what the heck!!!?

Lwkmd4h! initially I thought it's either recession was affecting my sight (Lolz) or I don't really know what SOC is again..

But then, Epsolar is a monster!!!! vomits current like kilode!

DMerciful:
Harvest from my 1kw system......I'm balling

jukeblam:


Thanks for this info. Won't be able to keep them on float charge, guess I'll be putting all 8 batteries for sale very soon be that.

Watch this space, everyone.

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 !

jukeblam:
Quick question, please:

I've got some Trojan J185P-AC flooded batteries (connected to a Magnum inverter) that have been in use for a little over 2 years now and I soon might not need to use them for an extended period (a year or two, thereabout)

Is it advisable to (a) Store them till I need them again or (b) Just sell off and purchase new ones when I reconnect the inverter in the future?

If can put them in storage, what's the proper way- drain & store or fill-up & store?

Thanks for your response(s).

Seun:
Which posts and which forums and which network and which phone and which browser?

Saipro:
I have been having immense problems replying posts as well as opening some nairaland forums. I have had to device some workarounds. Even quoting posts now requires manual tagging. Anyone else having these issues?

Other Web pages/sites load seamlessly.