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Nairaland Forum / Entertainment / TV/Movies / Satellite TV Technology / Solar Energy, A Complement To FTA (2277729 Views)
UPS Back-up, Also A Complement To FTA / FTA Frequency / Cctv Installation A Complement To Fta And Solar Energy (2) (3) (4)
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Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 1:53pm On Dec 04, 2018 |
When a pump or compressor motor picks up, they draw anywhere from 2 to 5 times their normal rated current for a few seconds after startup - this is what is called 'surge current' and you need an inverter capable of handling the surge. Mustpower (e.g Felicity) is a good rugged and reliable brand - they have roughly 300% surge capability so a 3.5kva 24v should be able to handle your (1hp > 746watts × 3times surge) 2.24kw surge without trouble. Any of the MustPower - PowerStar IR or similar clones (transformer based) should do the job - I recommended Felicity because of their excellent after sales service. If budget is not a constraint then you can go for the premium name brands but these usually cost a pretty penny. anidat77: 1 Like |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 2:01pm On Dec 04, 2018 |
NiyiOmoIyunade: which of the batteries do you think is the only good one?? ... 2ndly confirm the maximum current draw one can safely take from a 400ah bank, methinks 60amps = abt 2400w is ok |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 3:32pm On Dec 04, 2018 |
Brand new PROTEK 200L high quality solar water heater with complete mount accessories .... Xmas Promo Price : Call, Smartcell global 081-350-319-51
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Re: Solar Energy, A Complement To FTA by zeestone99(m): 3:44pm On Dec 04, 2018 |
anidat77: Try Felicity, or mustpower/Vil series brands 2 Likes 1 Share |
Re: Solar Energy, A Complement To FTA by anidat77(m): 4:54pm On Dec 04, 2018 |
NiyiOmoIyunade: Thanx Guys...pls any advice on how these recommended inverters handle about 2 hrs use of the electric hot plate of approx 2kW. I hear some brands of inverters don't do well with hot plates. even while below maximum rated inverter capacity. |
Re: Solar Energy, A Complement To FTA by idsolar(m): 5:50pm On Dec 04, 2018 |
anidat77: u need to confirm d rating of d pump. i believe this is surface pump. if u still want to maintain d pump to run on inverter I think a 3kva 24v wl do with good head room. i only use 1.5kva Emel to handle 0.75hp borehole pump. updated - I hope u switch off every other load b4 running d pump? of note is that I tried sukam 1.5kva for d borehole but could not carry it but the Emel carryam onetime |
Re: Solar Energy, A Complement To FTA by DMerciful(m): 6:45pm On Dec 04, 2018 |
My suspicion is the balancers, from usage I have come to the conclusion that they cause more harm than good. Also , balancer tends to affect the charging process and mind you there is not verified evidence to show that longevity was actually increased by balancers for lead acid cells. If you look at the balancers for lithium, they do not move charge from strong to weak but rather it either stop charging the strong until the weak catches up or bleeds the charge of the strong to come down to same level as the weak.I am afraid all the batteries are gone.This time go for lithium or lead acid without balancers or desulphators earthrealm: 2 Likes |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 8:18pm On Dec 04, 2018 |
DMerciful: ![]() ![]() ![]() ![]() ![]() ![]() ![]() reminds me of a setup i saw 2months ago, the person had 4 fla batts of different makes, and 4 quanta smf, hooked together in one bank!!!. the owner no gree o, when i tod him how wrong his setup was, 1 mumu installer cum seller installed the sh.it for him last year with solar panels ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 8:19pm On Dec 04, 2018 |
anidat77: Hot plate 2kw ![]() ![]() Even if your inverter is capable, Only LifePo4 batteries can deliver that.. without stress.. What happened to cooking Gas ![]() |
Re: Solar Energy, A Complement To FTA by mctfopt: 8:50pm On Dec 04, 2018 |
My friend has never used a battery balancer or desuphator but his battery life is just great. Surprisingly, he's using a chinko battery ![]() |
Re: Solar Energy, A Complement To FTA by Pharyn(m): 9:51pm On Dec 04, 2018 |
Another Victron Ecosystem with BYD Lithium Battery Installation (with 10.8kWp Solar) is currently cooking, brought to you by ElektroPhaim Solar! See the Solar Roof Plan and the Proposed wiring diagram for more information. Stay tuned and we would update you. 1 Like
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Re: Solar Energy, A Complement To FTA by anidat77(m): 9:51pm On Dec 04, 2018 |
Dam5reey: One of my 7 point agenda is to have a system that can power my split unit ac, pump my sumo and also boil egg from solar power , not all at once o.....how can we stay green when gas is more attractive ![]() ![]() 1 Like |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 11:04pm On Dec 04, 2018 |
anidat77: Nice one.. when cash is not the problem everything is possible.. ![]() 1 Like |
Re: Solar Energy, A Complement To FTA by idsolar(m): 5:54am On Dec 05, 2018 |
earthrealm: JEHOVAH!!! egusi and obono together. chaiiii see combo � |
Re: Solar Energy, A Complement To FTA by idsolar(m): 6:48am On Dec 05, 2018 |
anidat77: 2kw ke. for how long? odiquariski o. there is this low consuming hot plate somebody talked about last time. u can try that. uses customise pot. with that ur batrs are not stressed |
Re: Solar Energy, A Complement To FTA by anidat77(m): 8:09am On Dec 05, 2018 |
idsolar: The induction cookers are pretty good...besides I don't intend loading the system till the Sun is high above. That way I can always draw much needed solar input without total drain or dependence on my bank. But I haven't been offered any inverter brand looking from this cooking load angle...maybe the sellers here can tell us more about their recommended products before discount prices..... ![]() |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 8:57am On Dec 05, 2018 |
My Oga nor b so o! ![]() As we speak I am running 2 units of 1hp AC (LG Inverter ACs) in sitting room and bedroom + TV and sound system + Fridge and Water Dispenser [cold water only] - my combined load is just 1.6kw and if I have burst loads e.g iron & microwave that takes me over 2kw it's just for a few minutes perhaps 30 minutes max. I am doing this on a 48v 800Ah bank where my C20 discharge rate is about 2kw. So running 2kw for 2 hours is Ok for my setup. If you have a smaller lead acid bank then you may want to recalibrate max loading appropriately. Occasional bursts are okay and even inevitable but not sustained overloading (most lead acid batteries are rated C20) and sustained overloading will certainly kill your batteries fast. If you are running your 2kw hotplate when your panels have excess power relative to battery charging needs (absorption charging stage) then you will place no extra burden on the batteries if your panels are able to source that extra 2kw or at least a good part of it. You will literally be cooking your food with the sun ![]() ![]() Any properly rated 3Kw and above inverter should be able to run a 2kw load with no issues - the Felicity 5kva (MustPower clone) should handle this load like a champ. The 5kva Axpert types (transformerless) are supposed to be able to handle these as well but your mileage may vary. Felicity also sells these Axpert types but I was still at their office last week and their sales rep was very skeptical that their Axpert clone could handle resistive loads (ditto for Zinox) although technically and based on reviews from Oga Barezzi and Pranil the reverse should be the case and these Axpert clones should run your 2kw hotplate with no trouble at all. Personally, I like to load asian origin inverters no more than 70% of their rated capacity but for the premium names, you can happily load at 100% of rated capacity and have no worries. anidat77: 1 Like |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 10:32am On Dec 05, 2018 |
I always advice C20 as the maximum safe discharge for a lead acid battery. For a 48v 400Ah bank, this would be 20amps or 1000watts max. At 2.4kw loads you would be burdening the battery almost 3 times what it was rated for. earthrealm: |
Re: Solar Energy, A Complement To FTA by olaade21: 12:49pm On Dec 05, 2018 |
You have 16 units of 12 volt 200 AH batteries. Simple Math. 16 x 12 volts x 200 AH = 38,400 watt hours period. You can arrange them as: 12 Volts: putting all 16 batteries in parallel strings which gives you 12 volts @ 3200 AH or 12 volts x 3200 AH = 38.400 Watt Hours 24 Volts: 2 in series and 8 parallel Strings which gives you 24 volts @ 1600 AH or 24 volts x 1600 AH = 38,400 Watt Hours 48 Volts: 4 in series and 4 parallel strings which gives you 48 volts @ 800 AH or 48 volts x 800 AH = 38,400 Watt Hours 96 Volts: 8 in series and 2 parallel strings which gives you 96 volts @ 400 AH or 96 Volts x 400 AH = 38,400 Watt Hours 192 Volts: All 16 in series which gives you 192 volts @ 200 AH or 196 volts x 200 AH = 38.400 Watt Hours. See anything in common? Series Voltage Adds Parallel Current Adds Power always adds. Every battery is 12 volts x 200 AH = 2400 watt hours. You have 16 of them or 16 x 2400 watt hours = 38,400 watt hours Here is the bad news. The only good configuration is 196 volts. You really screwed up using parallel batteries. In about a year or less you will learn this lesson the good ole fashion way loosing lots of money when you have to replace the batteries. Don't make that mistake twice. Saw this on an online forum and throwing it up to the Ogas in the house. Which do you believe is the best setup. |
Re: Solar Energy, A Complement To FTA by Solardepot: 4:21pm On Dec 05, 2018 |
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Re: Solar Energy, A Complement To FTA by earthrealm(m): 4:56pm On Dec 05, 2018 |
NiyiOmoIyunade: YEAH. adds up, i wonder if the true effects of surge/instantenous load spikes lasting upto 2mins have been investigated. lets say i have an 800w load running, then an electric iron of 1kw kicks in, runs for 2mins or so..n goes off 2ndly, really curious at how you arrived at saying only 1 batt is still good in the lot.interested in knowing how you arrived at that conclusion. 3rdly this brings me to the issue of buying 2nd hand batts, its really a game of chance, cos if perhaps your analysis of my batt bank is true, an unscruplous person can simply bring them out and sell as neatly used batts ![]() ![]() the attached pic, 5kva highpower inverter is at 40% load, which should be about 1500w, about 17amps is coming in from panels, the 2 batts i suspect as being damaged are even holding steady at 12.5v ![]() ![]() used battery buyers, i hail una o ![]() ![]() ![]()
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Re: Solar Energy, A Complement To FTA by kiekie1(m): 5:53pm On Dec 05, 2018 |
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Re: Solar Energy, A Complement To FTA by Oshomo12(m): 6:00pm On Dec 05, 2018 |
Buying used batteries is similar to you crossing an eight lane high way blind folded(99% chances of it not ending well). 1 Like |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 6:31pm On Dec 05, 2018 |
NiyiOmoIyunade: 200AH 12V should not be loaded more than 120watts..most AGM cannot all those 2 minutes Surge, It weakness the Cell faster than you think.. Imagine loading 60A on a 200AH.. For battery sizing purpose Divide total maximum load by 120w to know the number of batteries 2000watts/120 is 16 batteries minimum.. My office was changing batteries every 6months, we had 3.5Kw Inverter which runs at almost 70% on just 4 batteries. You only enjoy these batteries when they enter Float every day.. 2 Likes |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 6:36pm On Dec 05, 2018 |
Oshomo12: It's depends on source, Kiekie's Full river still working fine close to 2 years now.. His Ritar 100Ah(2 in parrallel) is firing as well.. 6 months after purchase.. ![]() see below, under load Batteries at 12.69V after sunset.. Lowest Voltage have seen is 12.4V after several hours.. batteries Float Every day 1 Like
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Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 6:51pm On Dec 05, 2018 |
Anybody that relies on fancy battery meters which try to predict the battery profile via an algorithm or 15 secs load testers will very likely get misleading results. 2 minutes of burst loads should do no harm - remember battery charge and discharge are initially chemical reactions and the state changes ever so slowly. I believe only the battery above 12v has any real hope - by allowing your battery bank to run down to 45v, you essentially did a sort of capacity test. All those batteries reading 8.3v and 10.5v are presumed dead because they were reading so low inspite of the balancer moving current into them. The 11.sumtns are borderline cases but definitely must have sulphated and lost capacity. The effect of having a mismatched battery bank only ever gets worse and worse for the weaker batteries. For the attached picture, you were getting help (17amps) from your solar array at thesame time so you really can't tell anything useful about capacity from the battery voltage. The correct test protocol is to charge each battery to full individually, remove all charge sources and allow to rest for 2 to 12 hours and then discharge with a large load for at least 30 mins - I like to calibrate my load such that it would have run the battery down within 2 hours on a good day so that way I can dispense quickly with the test and also strain the battery enough for it to collapse under the stress if it is not a very healthy battery. earthrealm: 1 Like |
Re: Solar Energy, A Complement To FTA by Saipro(m): 7:14pm On Dec 05, 2018 |
olaade21:I'm not an oga but I'll respond. Firstly, I presume you meant 192V for the number in bold font. Secondly, yes, a single string configuration is usually the most desirable but at times not cost-effective. Then the safety issues are more daunting in a high voltage DC setup. Arcing is very real and does nasty damage. Trust me on it. For people whom run DC devices, 12V devices are the most abundant followed by 24V devices. 48VDC devices are not only scarcer but inordinately expensive as well. A lot of good gadgets simply don't come in 48V offerings. Now imagine seeking higher DC voltage gadgets. Case scenario: consider having a 24V inverter with 6V 415AH x 4. You're starting fresh but starting somewhat big for a small home system, based on projected loads. Single string, beautiful performance. Life is looking good. Then, as solar enthusiasts are wont to do, you get restless - you want more juice. Upon the death (or switch) of your batteries, you want to double the bank capacity. The logical choice is a single string of 6v 415AH x 8 batteries and an inverter running 48VDC. An inverter change shouldn't be too much overhead to bear right? What if there are other peripherals running on 24V (pressing irons, floodlights, DC water pump, two DC-to-DC 24V-to-12V buck converters, and a few other DC devices? The single string option doesn't look so appealing now, does it? This is a real life scenario and that was one of my houses while I was living off-base. I eventually went 48VDC for forward compatibility with other devices in other locations but had to junk a lot of gadgets (very cost ineffective thus defeating the cost but not comfort effectiveness of solar). That's asides the fact that solar isn't really cost-effective in the first place. And before anyone suggests 48V-to-24V buck converters, I used them and they all failed, mostly under a year. They really hate switching devices. No, he didn't screw up badly. While a 2-string bank is the only really reliable parallel bank out there, with good practices, you can comfortably run up to four parallel strings with minimal worry. Batteries are batteries and can go belly up even with good connection design. And beyond certain ampacities, it's all but impossible to maintain a single string. Such is the nature of lead-acid batteries. |
Re: Solar Energy, A Complement To FTA by NiyiOmoIyunade(m): 7:29pm On Dec 05, 2018 |
I am interested in your load at 82w. What appliances did you have running at that time you took the pic? Dam5reey: |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 7:46pm On Dec 05, 2018 |
NiyiOmoIyunade: At that time Sound system - music @ 80% Volume TV 22" LED TV Decoder 2 DC bulbs consuming only 5W DC fan 10-15 watts Phone Charging Battery management rule other Loads should stick with phcn.. |
Re: Solar Energy, A Complement To FTA by olaade21: 7:57pm On Dec 05, 2018 |
Saipro: Beautiful. I like your explanation. What do you propose as the best home solution. 24v/48v, Series/Parallel for a 12v 200Ah battery setup. |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 8:19pm On Dec 05, 2018 |
Dam5reey: Good stuff Boss! Glad to know your are enjoying your batteries 2 years counting ![]() ![]() -30w led floodlight -5w led -55'android led TV -Standing fan at max speed -Samsung double door refrigerator -7w ×12 led -Phone charger View attached snapshot of my battery voltage ... 2 Likes 1 Share
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Re: Solar Energy, A Complement To FTA by kiekie1(m): 11:15pm On Dec 05, 2018 |
Second snapshot shows refrigerator timer switch deactivated by 10:30pm, room split AC been running for 45min approximately. AC runs mostly within 25-28° overnight depending on weather, yet batteries don't go below 24v ![]() It has been green efficient energy all year round ![]() 5 Likes
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