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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 Saipro(m): 9:27pm On Sep 20, 2020 |
GeorgeD1:.... still bothered about how your supplier unceremoniously stopped stocking them before some of us could partake of the goodness named Zenith batteries. So, my three and a half year old US batteries sprouted weak and dead cells within a weak of heavy usage with poor insolation. Enter panic mode. I cut down utilization to barest minimum for about a week; when that wasn't cutting it, I began daily equalization cycles after daily absorb termination. A week of daily equalizing seemed aggravate the situation with the weak cells seemingly dying too. I had begun doing the rounds of local lithium merchants when lady luck smiled upon with good fortune. A routine check of a car in the yard before a trip revealed an item previously forgotten - an Infinitum desulphator! Every vehicle in the family has one installed and average battery lifespan has since been 3 - 4 years (even with abuse). I was bound to have a few in the store so I ransacked the darker corners and found one each of the 24V and 12V types. Immediately rearranged the batteries that night such that the sole battery without issues would be the one excluded from the desulphators (I run a primary bank of 48V nominal) 48 hours later and the weak cells began showing signs of life. Enter the dragon. Daily equalizations with end-of-week dilution of the weak and dead cells. After a week, the weak cells had sprung to life while one of the dead cells showed the barest signs of life. The other dead cells wouldn't even bubble nor change colour (healthy cells had electrolyte turned brown from vigorous boiling). End of second week and all cells showed signs of life, however little. Middle of third week and all had resumed regular vicious boiling with equalization. Alternate day/once in three days equalization halted. We are now entering the fourth week of desulphator use (remember I ran two weeks of conditioning without them and the cells went almost beyond salvage). From registering 47V within an hour of sundown and either dying before dawn or waking to 39V, I now have at worst 49V at bedtime (82 - 88%) and 48V at daybreak (73 - 82%). Batteries have inevitably lost some capacity over the years. My nighttime/overnight load is still 200W or less (typically about 150W nighttime, 100W overnight - inverter consumption added). I should mention the bank had HA02 balancers installed from inception. I said it a few years ago and would like to reiterate now : snake oil or not, reliable desulphators work! 10 Likes |
Re: Solar Energy, A Complement To FTA by NairaBaba: 9:31pm On Sep 20, 2020 |
Ladder logic download link in PDF https://u.pcloud/publink/show?code=XZWyC5XZiGIzV9ALidYIB9MYBtKv7LKWn5Cy https://drive.google.com/file/d/1FwpHlkpHLgItr4S9WhTX8eqImWoy2YMR/view?usp=drivesdk The file is more than 250kb , I can't upload on nairaland. 1 Like
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Re: Solar Energy, A Complement To FTA by danowena: 10:16pm On Sep 20, 2020 |
Hello gurus, Based on guidance from this platform,I plan to have two 5kva 48v inverters (4 batteries in parallel for each totaling 16 tubular batteries). Can I use a single Solar mmpt CC to charge the batteries? If so, will it be a 96 v CC? 1 Like |
Re: Solar Energy, A Complement To FTA by NairaBaba: 10:28pm On Sep 20, 2020 |
Siemens LOGO Data logging in excel. 1 Like
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Re: Solar Energy, A Complement To FTA by ojeysky(m): 10:30pm On Sep 20, 2020 |
danowena: You didn't state the capacity of the battery, why do you also need 2 inverters, is it due to your load? That said, note this for a start, If your battery is in 48v then your CC must be 48v compatible not 98v 2 Likes |
Re: Solar Energy, A Complement To FTA by wilmaria14: 10:32pm On Sep 20, 2020 |
danowena:Will say u use 2 CC for it to work well 48v as it is in d inverter and battery |
Re: Solar Energy, A Complement To FTA by NairaBaba: 11:05pm On Sep 20, 2020 |
ojesymsym: I don't have wiring drawings on paper. The wiring is quite straightforward, I have it in my head. Siemens LOGO!8 is about 34,000 naira on AliExpress. I went for Siemens PLC because of their flexibility, ruggedness and durability ( industrial standard). |
Re: Solar Energy, A Complement To FTA by NairaBaba: 11:16pm On Sep 20, 2020 |
adrusa: PLC , programmable logic controllers, are not "analogue method" as you stated. PLCs generally handle analog (discrete) such your solar panel voltage and current, battery voltages and digital values such freezer/pump on, 0ff. For anyone with basic programming skill, a glance into the ladder logic I uploaded will give the ideal of the almost endless configuration/ control that you achieve with PLC. In the ladder logic I uploaded, I preferentially start and stop the freezers and pump based on solar power being produced. Battery voltage also can start and stop the loads, freezers and pump, . Built into the ladder logic I uploaded are number of timers; on-delay, off-delays, weekly and yearly timers, astronomical clocks, counter , resets, trip signals etc to ensure Safe and optimal performance. I opted for PLC because I want to run my loads, start and stop freezers/pump, based on the available solar power production optimally without deeping into the battery. With PLC , remote monitoring and datalogging can easily be achieved. 3 Likes 1 Share |
Re: Solar Energy, A Complement To FTA by danowena: 5:30am On Sep 21, 2020 |
ojeysky: wilmaria14: Thanks a lot. The Batteries are 12 V 200ah to be connected in series to make the 48 V (4 batteries in series). Yes, I need the 2 inverters because of the load as I initially planned using 10kva 180 volt inverter which I was strongly advised not to use. So, that said, it means I will use two 48v CC of say 100A? Another question that comes to kind now is how to get power to the two CC. Should I give them different panels? I plan to buy about 32panels, should I wire it in such a way that 16 panels are charging one whilst another 16 is charging another? Or is there a device that can split the charging into the CC or is it by simply connecting power from the wire that comes from the panel and splitting it into the two CCs? I am a novice so don’t mind my rudimentary questions. Because we needed to cast compound, we made provision for the DC wire that will come from the roof. We used two 4mm wire for a height of about 12 metres. Is the 4mm sufficient to carry the current from 32 panels of 320 watts? Your responses will be highly appreciated. |
Re: Solar Energy, A Complement To FTA by danowena: 5:51am On Sep 21, 2020 |
NairaBaba: This is very good for someone that is off grid. Is this PLC different from the solar charge controller or does it also do the work of the solar charge controller. If not, how does it come-in in the wiring?is before the cc or after the cc or after the inverter? |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 6:33am On Sep 21, 2020 |
danowena: This is a little significant set-up. I will try to summarize but I strongly recommend you get a techie to work with you on this. 1. Okay your inverter will need to support parallel option so that the output from the 2 inverters can be literally combined else you will need to separate the loads across both inverters 2. You could just get 2 hybrids and be done with but if you prefer standalone, need 2 CC with at least 80A, I suggest the 250v/100A victron or any other spec close to that. 3. Your wire guage is not sufficient, you should be fine with a 10mm guage (preferably 16mm) assuming you get the higher voltage CC such as the one recommended above 4. You will need to wire the CC in 2 arrays. How you then connect an array will all depend on the kind of Panels you are getting with regards to the max VOC of the panel 5. Each cc output wire will then need to go on the terminals of each of the 2 groups of 48v batteries as well. Kindly note that the above is just summarised to give you an idea, there is more details to it than this but that should get you started. All the best. 1 Like |
Re: Solar Energy, A Complement To FTA by danowena: 8:08am On Sep 21, 2020 |
ojeysky: Wow, thanks for the elaborate response. 1. My inverter is Sukam. I doubt it supports parallel output. Not sure though but we are separating loads. 2. The Victron 250/100 is almost 450k . Can the hybrid do same job? I understand the Victron can help you monitor your loads and even switch some off. 3. I will have to change the wires. What a waste. I will go for the 16mm so I can harness as much as possible. 4. Is understood. 5. Is understood. Thank you so much. |
Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 8:58am On Sep 21, 2020 |
babaegun: brother, welcome to the world of endless hot water supply without tears. congratulations you finally did it! 1 Like |
Re: Solar Energy, A Complement To FTA by GeorgeD1(m): 9:22am On Sep 21, 2020 |
Saipro: bro, i think the zeniths were available in the market for a while before they eventually disappeared. at that time, it was common sight to see solar installers marketing them although as you can imagine, they were not without their usual fakes and look alikes. i was only fortunate to have gotten the originals because i sourced it directly from the supplier in lagos. as for battery desulphators, i still wonder why they seem to have such a bad rap with guys here. when i hear statements like "snake oil" being used to describe them i just shake my head in disbelief. my zeniths were on desulphators (battery life saver) from day one of installation and even when i had issues with thunder strike which affected the bls, you can't imagine the speed with which i used to order a replacement. i see a hype of battery balancers in place of desulpators and i'm like, what is going on? for the almost 8yrs i used my zeniths, i never bought or used a single balancer but my batteries were always in top shape, so much so that my friend who bought off the zeniths from me when he learnt they were available promptly installed them and has been using them now for over 3 months without complaints. i'm sure if i had sold off the zeniths to him as dead batteries or scrap, claiming they were good, my phone would have been ringing off the hook by now. |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 9:41am On Sep 21, 2020 |
danowena: Since you already have an inverter then the hybrid won't be applicable as that is an inverter+cc. If victron is beyond reach, you may consider getting flexmax 80, @JUO advertised some of them, just check previous pages. If you are going for that, be sure to use at least 16mm wires 1 Like |
Re: Solar Energy, A Complement To FTA by JUO(m): 9:55am On Sep 21, 2020 |
NairaBaba:this na substation or house? |
Re: Solar Energy, A Complement To FTA by adrusa: 9:57am On Sep 21, 2020 |
NairaBaba: Properly programmed, a sonoff basic with node red will do all this and much more and it is infinitely extensible. The Siemens Logic is good but is limited in so many ways compared to a properly programmed raspberry pi running the appropriate packages, it is more expensive and it doesn't have so much redundancy built into it. |
Re: Solar Energy, A Complement To FTA by NairaBaba: 3:54pm On Sep 21, 2020 |
danowena: PLC, programmable logic controllers, are different from charge controllers. PLCs are used for (industrial ) automation. In this case we are looking at, PLC is used to switch on and off some loads, freezers and pump, connected to the the inverter outlet. The signals ( inputs) to PLC come from solar panel, Charge controller and battery voltage. The PLC output commands to the freezers and water pump based on conditions of your program ( logic) been fulfilled. In my own program ( written in ladder logic) , I used math function in the program to calculate solar power production and output commands ( on and off) to freezers and pump based on available solar power being generated by the solar panels which is determined by the weather conditions ( irradiance). |
Re: Solar Energy, A Complement To FTA by odimbannamdi(m): 4:17pm On Sep 21, 2020 |
Trippledots: Just left Arena market now. Located one Ik at C3-12 and this is exactly the one he has and he sells it for exactly 5k. 1 Like |
Re: Solar Energy, A Complement To FTA by spartacus11(m): 4:20pm On Sep 21, 2020 |
futurenix: 3.2KW ,24V with 4000W max PV array How much for this |
Re: Solar Energy, A Complement To FTA by odimbannamdi(m): 4:21pm On Sep 21, 2020 |
mctfopt: Just left Arena market now. The one i saw for this kind does not have the battery bar. As soon as i showed this your pic to the guy, he said it is DC and that the one he has is AC (doesnt have battery). He then directed me to one Ik at C3-12, but the type the guy has is the type Trippledots posted earlier. I may have to order for it from Jumia. I just hope they wont send me the one without battery (AC). |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 4:31pm On Sep 21, 2020 |
danowena: Your setup is large for you to play it by the ear, i would recommend you get an inhouse installer to work with you. This issue of load being large, hence the need for 2 inverters, is usually applied wrongly by inexperienced installers/home owners. I recall an aquantaince who claimed to be an engr, got a 6.5kva 48v inverter, and 4 batteries, that his load is large, ac and pumping machine, which he insisted didnt run simultaneously. I flatly told him that he would be needing new batteries within 6months, and instead of calming down to listen, he was quoting 1 useless thing or the other, how his 3kva gen cudnt carry the sumo, only his 8kva gen, hence why he opted for 7.5kva gen, but had to settle for 6.5kva cos of cost blah blah blah. He was however truthful enough to confess that the system isnt performing as b4, that the installer had come to change 2 batts last month...etc List your max simultaneous running load, so we can be sure you need 2 inveeters For big loads, you are better off having 1 big battery bank! You can connect 2 cc to the same bank. 2 units 80amp cc shud work fine |
Re: Solar Energy, A Complement To FTA by danowena: 5:24pm On Sep 21, 2020 |
JUO: |
Re: Solar Energy, A Complement To FTA by Monlo(m): 6:07pm On Sep 21, 2020 |
Good day all. Please anyone here selling 12v4.5ah lead acid ba3.My rechargeable fan's ba3 need replacement after serving me for 2 solid years.Thanks |
Re: Solar Energy, A Complement To FTA by futurenix(m): 6:15pm On Sep 21, 2020 |
170K only. 1 unit to go (Silver + black colour) spartacus11: |
Re: Solar Energy, A Complement To FTA by Oshomo12(m): 7:58pm On Sep 21, 2020 |
danowena: Kindly use a 2v cell to achieve this (600~1000ah). Stay away from 12v batteries. They are not designed for this kind of heavy use. 2 Likes |
Re: Solar Energy, A Complement To FTA by sintolord(m): 8:27pm On Sep 21, 2020 |
Futurenix, I sent a mail to you, kindly respond. Am interested in the 3.2kva inverter. Thanks futurenix: |
Re: Solar Energy, A Complement To FTA by wilmaria14: 8:56pm On Sep 21, 2020 |
danowena:Go for 80A CC good one since u have 2 inverter make ur connection in two 1to one CC |
Re: Solar Energy, A Complement To FTA by mukhcech(m): 11:01pm On Sep 21, 2020 |
https://konga.com/product/suoer-2000w-inverter-dc-12v-to-ac-230v-solar-power-inverter-3197766 Please is this inverter worth it. Can I use my standing fan on this inverter? Thanks 1 Like |
Re: Solar Energy, A Complement To FTA by Valto(m): 11:06pm On Sep 21, 2020 |
mukhcech:this is a modified sine wave.. if your standing fan is not the rechargeable/dc type, dont use it on this inverter otherwise the fan coil will burn out in few months time. |
Re: Solar Energy, A Complement To FTA by mukhcech(m): 11:13pm On Sep 21, 2020 |
Valto: Thank you Oga mi. It is the rechargeable type with two batteries. |
Re: Solar Energy, A Complement To FTA by mank1234(m): 8:26am On Sep 22, 2020 |
For Lithium users, if you are using chargery bms, BMS8T, or BMS16T or BMS24T, take a look at this https://github.com/eumobong/chargery It's reads the data and publishes to MQTT topics. Posting to emoncms node 40 to be added in version 2 on 27th Sept. Advantage: Free. No need for victron's battery monitor. |
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