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Solar Energy, A Complement To FTA - Satellite TV Technology (262) - Nairaland

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UPS Back-up, Also A Complement To FTA / FTA Frequency / Cctv Installation A Complement To Fta And Solar Energy (1) (2) (3) (4)

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Re: Solar Energy, A Complement To FTA by davodyguy: 10:48am On Jun 13
earthrealm:


ok ur panels are 200w, not 250w..perfect then 200w x 3 in series shud be fine.
ur 600w 12v setup has the capabilty of bring 40/45amps...thus in real life factoring in losses from cabling, inclination and scc efficiency..you would be getting btw abt 35amps- 38amps max. for ease of calculation lets assume 30amps, the norm is to take 5hrs of sunlight daily, thus 5hrs x 30amps = 150amps, ur bank is 400ah, wch you can theoritically drain/recharge to 300ah, so you can see that ur setup can only supply 50% of your bank capACITY - THIS IS NOT IDEAL LONGTERM, unless your loads are light n u dont drain ur bank heavily.
A 24V 200AH SETUP IS A BETTER DESIGN from all angles panels utilization/harvest/batt charging/C/10 etc......

hope you are aware of the term sulphation and C/10? UR BATT BANK NEEDS 10% CHARGING CURRENT TO REDUCE THE EFFECT OF SULPHATION, THUS a 12v 400ah bank needs minimum of 40amps, SOME OTHER BATT TYPES ARE C/8

Thanks. Before the end of the year, I will upgrade to 24v inverter.

Also, i am very very conservative and my wife laughs at me.

even at full charge now on Power company or Generator, we hardly use up to 100amps per day.

I mean when batteries are fully charged cos i just acquired the two batteries in April, 2017 we only switch on TV, decoder and fan for about 3 hours and go to bed. By the time we wake up and there's electricity, batteries are full again. so daily usage averages 250 watts load for about 5 hours or say out of 400 amps full charge, i use only 100amps and 300amps gets wasted or so.

I just want to go solar so i can explore more out of the 400amps available. I am presently under using the system and electricity at my present place is 18hours out of 24 hours per day.
Re: Solar Energy, A Complement To FTA by davodyguy: 10:52am On Jun 13
Dam5reey:


My opinion is connect 800w, your​ controller will take as much power during cloudy time, and during peak periods current limiting function kicks in

From experience... The charge controller only draw what it need to charge your battery from the Panel... Assume battery is almost charge from float to fully charged, it will only draw small power regardless of the Panel watt output...

I have seen 470 Watts panel connected to 10A controller.. everything works fine.. just that battery will charge at close to 10A any time of the day from 9am till 4 pm...... during peak periods the remaining 220 watts is lost.. but will compensate​ during cloud..

ok thanks .

But see my response above, do i still need to buy 4 panels? or just stick with my 3 jeje
Re: Solar Energy, A Complement To FTA by kiekie1: 11:41am On Jun 13
chris81964:
I got invited to a radio show "The Architect" FM 92.3 in Port Harcourt. The hosts Adaora Okoli and Daniel Braid had Ebi Bozimo and me on the show. Enjoy the Podcast.
http://atlanticwastepower.com/2017/06/listen-dr-solar-92-3-nigeria-info-port-harcourt-part-1/

Keep it up brother .. Jisie ike ! Odighi ofele wink

2 Likes

Re: Solar Energy, A Complement To FTA by zeestone99(m): 12:03pm On Jun 13
Dam5reey:


My opinion is connect 800w, your​ controller will take as much power during cloudy time, and during peak periods current limiting function kicks in

From experience... The charge controller only draw what it need to charge your battery from the Panel... Assume battery is almost charge from float to fully charged, it will only draw small power regardless of the Panel watt output...

I have seen 470 Watts panel connected to 10A controller.. everything works fine.. just that battery will charge at close to 10A any time of the day from 9am till 4 pm...... during peak periods the remaining 220 watts is lost.. but will compensate​ during cloud..

Seconded. Ur 400ah needs gud amt of current to charge, do the 2 ×2 config
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 12:52pm On Jun 13
davodyguy:


ok thanks .

But see my response above, do i still need to buy 4 panels? or just stick with my 3 jeje

Thought you said you have 4 200w panel already..

if not buy 3 check if the Voc on the panel will not exceed 100V when you multiply by 3..
Re: Solar Energy, A Complement To FTA by pranil(m): 4:12pm On Jun 13
Dam5reey:


Yeah.. a screenshot of your Panel specifications​ will help too..

I will make an assumption, say you have 30Vmp and Imp 6.7A

You connection will be
string 1 two panels in series(60 Vmp, Imp 6.7A)
string 2 two panels in series (60 Vmp, Imp 6.7A)

Connecting​ string 1 & 2 in parallel, will be ( 60Vmp Imp 13.4A)

The 32A Breaker is ok, but It will not limit current, breaker​ are like fuse, it work on same principle with Fuse but better, it will trip off in case of current surge

A Breaker will never trip in enough time to prevent damage to Equipment on Overload !! It is not safe to overload something and depend on breakers - All motors have a separate bimetallic relay which trips incase of overload to protect the motor . The transformers have winding temperature sensors etc. Electronic equipment like inverters have temperature sensing algorithms built in

A circuit breaker essentially protects the cables and equipment overheating causing fire hazard on short circuit . It also prevents overloading of cables not equipment ( DC cables are either rated for 70 DEG or 90 DEG Operating temperature )
See the typical operating curves the most sensitive curve ( Type B) requires 3 times the operating ( nominal current ) to trip in 10 sec anything lower than that the thermal relay is highly inaccurate and modelled to protect cables not equipment e.g.

When It comes to charge controllers ( major ones not sure about Chinese) There is no requirement to protect output for overloading . The charge controller will limit the current to it's max Ampere rating automatically. The breaker is there to protect from short circuit and should be suitably sized above the rated current and below the cable rated value

3 Likes

Re: Solar Energy, A Complement To FTA by pranil(m): 4:25pm On Jun 13
I am looking for a 48 V DC 5 KW Diesel Generator normally used in telecom equipment .


Something like this http://www.ascotinternational.com/my-product/product-dc-generator/

Although Acscot seems to have gone bankrupt

Anybody has contacts or seen similar equipment .

Currently I use 3 Phase 7.5 KVA KIpor with 2.5 KW 3 Phase 48 V DC charger to charge my batteries on a rainy day or during nights with heavy load .

The electricity prices start moving upwards It is time to start preparing to go fully off grid smiley

https://www.dailytrust.com.ng/news/business/nerc-proposes-monthly-electricity-tariff-review/200821.html

2 Likes

Re: Solar Energy, A Complement To FTA by efuro(m): 4:27pm On Jun 13
chris81964:
I got invited to a radio show "The Architect" FM 92.3 in Port Harcourt. The hosts Adaora Okoli and Daniel Braid had Ebi Bozimo and me on the show. Enjoy the Podcast.
http://atlanticwastepower.com/2017/06/listen-dr-solar-92-3-nigeria-info-port-harcourt-part-1/

interesting
I fully agree with you,
battery is necessary in a solar setup in Nigeria

unlike developed nations

nice work Dr.

1 Like

Re: Solar Energy, A Complement To FTA by pranil(m): 4:49pm On Jun 13
efuro:


interesting
I fully agree with you,
battery is necessary in a solar setup in Nigeria

unlike developed nations

nice work Dr.

Nice Perspective . Solar needs more education definitely and a mind set change -

I saw a Victron Energy financing on the AWPS website - Any idea how it will work ? similar to Solyntra ( whole system lease) or only equipment lease

I would not mind leasing quatrro 10 KVA grin

Re: Solar Energy, A Complement To FTA by emmaniche: 5:07pm On Jun 13
Please help me house.

Can a 5Kva inverter support 16X12V/200AH batteires, how long can it take to chargethe whole batteries?
Re: Solar Energy, A Complement To FTA by emmaniche: 5:09pm On Jun 13
Please help house.

Can a 5Kva inverter support 16X12V/200AH batteires, how long can it take to chargethe whole batteries?
Re: Solar Energy, A Complement To FTA by teamsynergy: 7:24pm On Jun 13
emmaniche:
Please help house.

Can a 5Kva inverter support 16X12V/200AH batteires, how long can it take to chargethe whole batteries?
what is the charging current of the inverter

1 Like

Re: Solar Energy, A Complement To FTA by chris81964(m): 10:11pm On Jun 13
kiekie1:


Keep it up brother .. Jisie ike ! Odighi ofele wink
Thank you my brother.

2 Likes

Re: Solar Energy, A Complement To FTA by chris81964(m): 10:13pm On Jun 13
efuro:


interesting
I fully agree with you,
battery is necessary in a solar setup in Nigeria

unlike developed nations

nice work Dr.
Thank you so much.
Re: Solar Energy, A Complement To FTA by Oshomo12(m): 11:22pm On Jun 13
emmaniche:
Please help house.

Can a 5Kva inverter support 16X12V/200AH batteires, how long can it take to chargethe whole batteries?
Ideally, max number of strings should be 3. If u have a 48v inverter. 1 string will have 4 batteries to make it 48v. So 3 strings in parallel should contain 12 batteries. Others may have a different view though.
What is ur input voltage for the 5kva inverter?

1 Like

Re: Solar Energy, A Complement To FTA by anidat77(m): 11:33pm On Jun 13
hello guys,
finally for more upgrade, 2 x 350watts panels, sundayenergy SDM350 from Solar depot.

Green power rocks wink

Re: Solar Energy, A Complement To FTA by Feshizzy(m): 11:47pm On Jun 13
emmaniche:
Please help house.

Can a 5Kva inverter support 16X12V/200AH batteires, how long can it take to chargethe whole batteries?

My brother even if na 200 batteries you wan add no problem,

Based on logistics,

As you see,
Most 5kva inverter na 48v meaning four batteries in series,
So e go be 16/4 which go give you four battery pack.

Meaning say you connection go be 4 x4 grin grin

My candid advise if you wan use nepa light charge them,
Na to first, you something like a knife switch wein you go fit the use separate each pack for charging and combine them all for usage,

Eh! E possible, but small work go dey am.

Now back to the matter!
Well, for the charging I would advise you get 3 48v 20/30a charger for the extra 3 packs, as the first pack would be having it's charges from the inverter directly,
Charging time with my recommendation would be 8-11 hrs all packs would be full.

This is based on the fact you intend charging with power from the grid,

But for solar setup,
I leave you in the hands of our ogas at the top! cool

1 Like

Re: Solar Energy, A Complement To FTA by Refa: 12:13am On Jun 14
What size of wire are you using?
Breakers are typically sized primarily based on wire size or amperage capacity of the wire in question. You can be producing 36A, if the wire used to carry this amperage is not rated for 36A, you are going to run into issues. On the other hand, if you wire is rated to carry something bigger than 36A; let's say 60A, you need to rate your breaker to protect your charge controller. Two ways to do this; Surge arrester and a breaker. Just my 2 cents
davodyguy:


Wait o Dam

9*4= 36 and we are using 32A.

Are my equipment safe?
Re: Solar Energy, A Complement To FTA by pranil(m): 1:56am On Jun 14
Feshizzy:


My brother even if na 200 batteries you wan add no problem,

Based on logistics,

As you see,
Most 5kva inverter na 48v meaning four batteries in series,
So e go be 16/4 which go give you four battery pack.

Meaning say you connection go be 4 x4 grin grin

My candid advise if you wan use nepa light charge them,
Na to first, you something like a knife switch wein you go fit the use separate each pack for charging and combine them all for usage,

Eh! E possible, but small work go dey am.

Now back to the matter!
Well, for the charging I would advise you get 3 48v 20/30a charger for the extra 3 packs, as the first pack would be having it's charges from the inverter directly,
Charging time with my recommendation would be 8-11 hrs all packs would be full.

This is based on the fact you intend charging with power from the grid,

But for solar setup,
I leave you in the hands of our ogas at the top! cool
Min charge rate for lead acid is c10 which means for four sets you need min 80 amps over 12-14 hours ( assuming round trip efficiency of 75 %)

But please use quality DC isolators like schider not teh knife switches meant for AC application as they can spark and weld the contacts . Solar Depot carries them

The problem with using multiple chargers on the same battery bank will be high DC ripple leading to premature failure of batteries or inverter unless you use quality chargers like victron I would advise getting a larger inverter

The batteries are l also large with 5 KVA ( 4 KW) load also it will take almost 8-9 hours to reach 50 % DOD . If you are really consuming 4 KW continuously I would advise getting a larger inverter as most inverters are most efficient and run much cooler ( longer life) at 50 to 75 % loads

I have seen Prag 8 KVA rated at max 100 amp and new Ipower 5KVA from Zinox rated at 80 amps . ( on Grid chargers built in the inverters )

3 Likes

Re: Solar Energy, A Complement To FTA by Feshizzy(m): 7:05am On Jun 14
pranil:

Min charge rate for lead acid is c10 which means for four sets you need min 80 amps over 12-14 hours ( assuming round trip efficiency of 75 %)

But please use quality DC isolators like schider not teh knife switches meant for AC application as they can spark and weld the contacts . Solar Depot carries them

The problem with using multiple chargers on the same battery bank will be high DC ripple leading to premature failure of batteries or inverter unless you use quality chargers like victron I would advise getting a larger inverter

The batteries are l also large with 5 KVA ( 4 KW) load also it will take almost 8-9 hours to reach 50 % DOD . If you are really consuming 4 KW continuously I would advise getting a larger inverter as most inverters are most efficient and run much cooler ( longer life) at 50 to 75 % loads

I have seen Prag 8 KVA rated at max 100 amp and new Ipower 5KVA from Zinox rated at 80 amps . ( on Grid chargers built in the inverters )








I doff my hat sir,
But with dc isolators will be mostly used when the batteries want to be charged,

My understanding of such ripples is when a circuit is having different charging source and charged at the same time!

But in this case, the isolators have separated each pack from the rest pack,

Can such ripple still occur?

1 Like

Re: Solar Energy, A Complement To FTA by emmaniche: 8:18am On Jun 14
Oshomo12:

Ideally, max number of strings should be 3. If u have a 48v inverter. 1 string will have 4 batteries to make it 48v. So 3 strings in parallel should contain 12 batteries. Others may have a different view though.
What is ur input voltage for the 5kva inverter?
48volts
Re: Solar Energy, A Complement To FTA by idsolar(m): 9:12am On Jun 14
emmaniche:
Please help house.

Can a 5Kva inverter support 16X12V/200AH batteires, how long can it take to chargethe whole batteries?

from experience, i wl get 5kva 96v. do 2pack of 8batr each. i no like wahala of over-paralleling . shikena

further let inverter have charge capacity 30-40a so within 5-9hrs depending on dod

3 Likes

Re: Solar Energy, A Complement To FTA by HeartforGod: 10:31am On Jun 14
Hello House,

I have a little question.

I set my cc to equalise my FLA batteries at 31V and i have 1.5kva 24V luminous inverter connected to the batteries. From my observation, the inverter has float charge voltage of 27.5V

My question is - if am equalising the batteries at 31V using cc and the inverter is powered at the same time (hence it sees the 31V); will this voltage cause any harm to my inverter?
Re: Solar Energy, A Complement To FTA by earthrealm(m): 11:19am On Jun 14
emmaniche:
Please help house.

Can a 5Kva inverter support 16X12V/200AH batteires, how long can it take to chargethe whole batteries?

if you havenot bought the batteries or inverter...consider getting the 2v/800ah or 6v/800ah batteries if you still want to maintain the 48v setup, or consider getting the 96v 5kva inverter

2 Likes

Re: Solar Energy, A Complement To FTA by kiekie1: 6:53pm On Jun 14
earthrealm:


if you havenot bought the batteries or inverter...consider getting the 2v/800ah or 6v/800ah batteries if you still want to maintain the 48v setup, or consider getting the 96v 5kva inverter

He can simply contact me for a clean fairly used 5kva 96v at very affordable price ... cool

Re: Solar Energy, A Complement To FTA by pranil(m): 7:37pm On Jun 14
Feshizzy:


I doff my hat sir,
But with dc isolators will be mostly used when the batteries want to be charged,

My understanding of such ripples is when a circuit is having different charging source and charged at the same time!

But in this case, the isolators have separated each pack from the rest pack,

Can such ripple still occur?

Not if you are separating them while charging in sets of 4
Re: Solar Energy, A Complement To FTA by davodyguy: 7:41pm On Jun 14
Refa:
What size of wire are you using?
Breakers are typically sized primarily based on wire size or amperage capacity of the wire in question. You can be producing 36A, if the wire used to carry this amperage is not rated for 36A, you are going to run into issues. On the other hand, if you wire is rated to carry something bigger than 36A; let's say 60A, you need to rate your breaker to protect your charge controller. Two ways to do this; Surge arrester and a breaker. Just my 2 cents
6mm bro
Re: Solar Energy, A Complement To FTA by JUO(m): 6:30am On Jun 15
JUO:

Available for 5 days
Fangpusun
80a-12/24/36/48/60v=165k
70a-12/24/36/48v=100k
60a-12/24/36/48/60v=145k
60Da-12/24/36/48v=115k
50Da-12/24v=60k
50a-12/24v=45k
45a-12/24/36/48v=70k
30a-12/24v=30k
Mppt control=18k

Epsolar
40a A series -12/24v=59k
30a A series -12/24v=45k
30a CN series -12/24v=33k
Mt50=15k

Battery monitor
Dc-100a-6-100v=9k
AC-100a-220v=6k

DC breaker
125v-16-63a=3k

Digital timer din rail
220v/16a=5k
O8o98733709
Price will soon go up
Re: Solar Energy, A Complement To FTA by earthrealm(m): 8:18am On Jun 15
davodyguy:

6mm bro

that is likely too small, what is the distance?.

use the link below to select the correct cable sizing.
bearing in mind we have fake and substandard cables in nigeria, i would also advice you to increase the recommended cable size by 50 to 100%, ie use 16mm where the chart recommends 10mm etc

http://www.solar-wind.co.uk/cable-sizing-DC-cables.html
Re: Solar Energy, A Complement To FTA by Obascoetubi: 9:48am On Jun 15
pranil:

Min charge rate for lead acid is c10 which means for four sets you need min 80 amps over 12-14 hours ( assuming round trip efficiency of 75 %)

But please use quality DC isolators like schider not teh knife switches meant for AC application as they can spark and weld the contacts . Solar Depot carries them

The problem with using multiple chargers on the same battery bank will be high DC ripple leading to premature failure of batteries or inverter unless you use quality chargers like victron I would advise getting a larger inverter

The batteries are l also large with 5 KVA ( 4 KW) load also it will take almost 8-9 hours to reach 50 % DOD . If you are really consuming 4 KW continuously I would advise getting a larger inverter as most inverters are most efficient and run much cooler ( longer life) at 50 to 75 % loads

I have seen Prag 8 KVA rated at max 100 amp and new Ipower 5KVA from Zinox rated at 80 amps . ( on Grid chargers built in the inverters )







wat of sukam inverter, that product is long lasting ?
Re: Solar Energy, A Complement To FTA by JohnKester: 1:47pm On Jun 15
JUO:

Price will soon go up

Can you give more information about the DC-100A-6-100V BATTERY MONITOR. Specs, functionality, installation and possibly pixes.

Many thanks.

Cheers
Re: Solar Energy, A Complement To FTA by zeestone99(m): 2:51pm On Jun 15
Just arrived Felicity Solar products.

DC freezer 200liters dc12v/ac 220v - 220k
Dc refrigerator 182liters(136litres fridge,46 litre freezer) - 230k
3.5kva inverter 24v( 35amps charging current) - 160k
5kva inverter 48v ( 30amps charging current) - 200k
7.5kva 48v (40amps chargin current) - 300k
10kva 48v- 370k

1year warranty for Fridge nd freezer, 2 years warranty for inverters.
service center available here in lagos. Hurry now while stock last.

Solar panels
Flames
300w mono - 70k
250w mono - 60k
250w poly- 55k

Sunshine solar
300watts mono=69k
250watts mono=60k
250watts poly=54k

Batteries
Sukam FLA battery 200ah - 110k
Luminous FLA battery 200ah - 120k
Genus FLA 200ah - out of stock
Genus sealed lead acid battery 200ah - 120k
Luminous 200ah sealed lead acid - 120k
Quanta amaron 200ah - 130k


Fast delivery
Call/whatapp 08117398294

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