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Solar Energy, A Complement To FTA - Satellite TV Technology (788) - Nairaland

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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 ojeysky(m): 3:34am On Jul 03, 2020
mank1234:


Alternatively, if you have raspberry pi you can get ICC software from info@iccsoftware.co.za at a fee.

Afterwards, I can give you a seller on aliexpress that tasmotizes Esp-based devices or you can get some of the device (eg Sonoff) yourself and flash with tasmota. ICC software will use any of the inverter parameter you want to automate your device on and off.

I just don't want to expend on ICC as I already have emoncms up and running (which ICC also uses) on my pi and it gives me the stats I needed. So you can point me to the seller, but I need to learn how to use node-red first
Re: Solar Energy, A Complement To FTA by ojeysky(m): 3:42am On Jul 03, 2020
Dam5reey:


How come you got answers to this Question

What is your system Voltage?

I will assume 24V as common factor in both CC

If your system is 24V, then you cannot use the 40A controller
(6* 275w is 1650w ) 1650 watts / 24 is 68.75A

So you have only one option left.. ✅

Better still use Both ✅

Why not? for a proper CC it will only just peak out at 40A. When I was using felicity hybrid temporarily which is rated for 60A 1.5kw array, it often gets to the max (and as far as 1.7kw occasionally) and that's it, the rest of the power from my 2.250 array gets wasted. I think reasonable oversizing helps to guarantee constant level of harvest during bad weather condition

1 Like

Re: Solar Energy, A Complement To FTA by futurenix(m): 4:06am On Jul 03, 2020
Please house, just to be sure, is a BMS current rating supposed to be the same as that of CC or lesser or there is a particular recommended value.
Re: Solar Energy, A Complement To FTA by mctfopt: 5:19am On Jul 03, 2020
ojtech8291:
I have 6 units of 275W panels, Rated voltage 30.9V, Rated current 8.91A, VOC 38.8V, SCC 9.47A and Max system voltage 1000V with two different CC 12/24/60A VMax is 70V, while the other is 24/48/40A Vmax 100V. Which of the controller is the best to handle 6 panels and at what configuration of the array, 2S3p or 3S2P?


ojeysky:


I will use the one rated 70v and do 2s3p

Just like the person above stated, I'll do the same. The thing is whichever CC you chose out of the two you are theoretically going to lose some power out of the six 275 solar panels.
Re: Solar Energy, A Complement To FTA by mctfopt: 5:26am On Jul 03, 2020
futurenix:
Please house, just to be sure, is a BMS current rating supposed to be the same as that of CC or lesser or there is a particular recommended value.

Chose BMS based on the battery in use. Eg if you buy an 100AH LFP that can do a 1C charge ie 100A, you are better off getting a 100A BMS. This BMS can work with a 60A SCC. So if your PV supplies 60A and your inverter charger supplies 30A, the BMS can handle that. But if you buy a 50A BMS and your PV supplies 60A and charger 30A, the BMS will burn out leaving your battery charging/discharging and management unregulated.

Another instance if your battery can only take 50A, buying a 60A BMS is advised, so if the charging exceeds 60A, the BMS should be able to cut it off saving your battery from being overcharged.
Re: Solar Energy, A Complement To FTA by garbamaza: 5:45am On Jul 03, 2020
Good morning all,
Gurus in the house I need your advice on this 24v, 100 ah lithium battery with 10a BMS.
Thank you for the possible responses.

Re: Solar Energy, A Complement To FTA by ceaser: 5:56am On Jul 03, 2020
tonididdy:

Do you have an Xbox 1s?
Bro that shit is 170w

I don't have an Xbox S one. And yes I have read somewhere in NL that it approaches 200w but most comments online say otherwise. I am not a user so I can't base my claim on personal experience.

And that reminds me. How can one develop likeness for these game consoles? Is it a natural affinity or does one have to nurture it? The only time I played video games as a kid were those days of 2D 96-in-1 Super Mario Bros tekken top loading cartridge type Nintendo console.

At times I like when people have fun playing it with their spouses or children. I've also heard it kinda improves reflexes and mentation. But I can't seem to bring myself to consider playing it or even consider it a worthy investment or acquisition.

Re: Solar Energy, A Complement To FTA by ojeysky(m): 7:22am On Jul 03, 2020
futurenix:
Please house, just to be sure, is a BMS current rating supposed to be the same as that of CC or lesser or there is a particular recommended value.


mctfopt:


Chose BMS based on the battery in use. Eg if you buy an 100AH LFP that can do a 1C charge ie 100A, you are better off getting a 100A BMS. This BMS can work with a 60A SCC. So if your PV supplies 60A and your inverter charger supplies 30A, the BMS can handle that. But if you buy a 50A BMS and your PV supplies 60A and charger 30A, the BMS will burn out leaving your battery charging/discharging and management unregulated.

Another instance if your battery can only take 50A, buying a 60A BMS is advised, so if the charging exceeds 60A, the BMS should be able to cut it off saving your battery from being overcharged.

Yes but that should only the applied with small banks else one may use one kidney to buy BMS grin, if you have a over 400AH bank then you don't have to look for a 400AH BMS because the reality is that you won't generate or consume up to that amount of current instantaneously. So for 150AH and above a 100A BMS is fine. If you get higher at a good deal, all well and good
Re: Solar Energy, A Complement To FTA by ojeysky(m): 7:23am On Jul 03, 2020
garbamaza:
Good morning all,
Gurus in the house I need your advice on this 24v, 100 ah lithium battery with 10a BMS.
Thank you for the possible responses.

Kai 10A BMS is dulling o....if it's truly LFP that is in that thing then I will suggest you yank off the BMS and put in anything from 50A to 100A
Re: Solar Energy, A Complement To FTA by ojeysky(m): 7:26am On Jul 03, 2020
ojeysky:
So I got a couple of few extra when I placed some orders for my use. The extras are available for sale to anyone interested. Here is the list:

50A lithium Charger with adjustable current/voltage - 50k
5pcs

ANT BMS 7s to 16s 320A without LCD display - 48k
2pieces

Smart BMS 4s 35A UART - 25k
4pieces

8s balancer - 8k
2pieces

4s balancer - 4500
3pcs

I have some busbars as well but I will need to do some calculations first to know how much extra will be available after my planed upgrade.

WhatsApp/call - 0 8 0 3 5 23 35 35

Fyi they can all be found on AE

A reminder on those accessories and updated status of the pieces left for grabs
Re: Solar Energy, A Complement To FTA by ceaser: 7:40am On Jul 03, 2020
ojeysky:





Yes but that should only the applied with small banks else one may use one kidney to buy BMS grin, if you have a over 400AH bank then you don't have to look for a 400AH BMS because the reality is that you won't generate or consume up to that amount of current instantaneously. So for 150AH and above a 100A BMS is fine. If you get higher at a good deal, all well and good

He said the BMS will burn out if the battery is exposed to a higher than rating current.

I think in such instance, what the BMS does is to shut down (activate overcurrent protection) rather than burn out.

Or am I missing something?
Re: Solar Energy, A Complement To FTA by ojeysky(m): 7:44am On Jul 03, 2020
ceaser:


He said the BMS will burn out if the battery is exposed to a higher than rating current.

I think in such instance, what the BMS does is to shut down (activate overcurrent protection) rather than burn out.

Or am I missing something?

It should do either of what you have stated above or just limit charging to the peak and continue charging. That's what mine does, it stays at 60A max charge without any trigger but since it's solar charging which is not constant, I don't know how it will behave if I had e.g 70A constant current on it, but documentation says it will trigger over current protection
Re: Solar Energy, A Complement To FTA by ceaser: 7:45am On Jul 03, 2020
garbamaza:
Good morning all,
Gurus in the house I need your advice on this 24v, 100 ah lithium battery with 10a BMS.
Thank you for the possible responses.

Who puts 10A BMS on a 24v/100ah LFP?

Please read the buyers' reviews to be sure the rating is truly 100Ah and not 50Ah or 40Ah sef.


In addition, there are Nigerian assemblers of LFP that will offer you a 60A/80A BMS with that battery rating for around 280k. I even think that Felicity LFP will cost you less than what's in that picture. Remember that shipping fees, which might be approaching around 150k with dem DHL UPS et al, will still be added.

Then when it gets to Nigeria, customs will still cut their own pound of flesh from you. That might be around another 15k to 25k.
Re: Solar Energy, A Complement To FTA by ceaser: 7:56am On Jul 03, 2020
ojeysky:


Yes but that should only the applied with small banks else one may use one kidney to buy BMS grin, if you have a over 400AH bank then you don't have to look for a 400AH BMS because the reality is that you won't generate or consume up to that amount of current instantaneously. So for 150AH and above a 100A BMS is fine. If you get higher at a good deal, all well and good

I've often wondered if similar BMSes can be paralleled on the batteries, like you would do with CCs.

ojeysky:


It should do either of what you have stated above or just limit charging to the peak and continue charging. That's what mine does, it stays at 60A max charge without any trigger but since it's solar charging which is not constant, I don't know how it will behave if I had e.g 70A constant current on it, but documentation says it will trigger over current protection

I think that your 200A LFP with 60A BMS might be really limiting. My 24v/100A has 60A BMS and I'm still seriously flirting with the idea of yanking it out.

What has prevented me so far is fear of voiding the warranty. Once I've enjoyed it for a while, I will definitely do it cos that urge is nagging. I think next time I will insist the dude slaps in a higher rating BMS for a few extra bucks. Maybe even supply him the BMS of my choice sef.
Re: Solar Energy, A Complement To FTA by earthrealm(m): 8:08am On Jul 03, 2020
mctfopt:



LFP users are like less than 5% of total users out there in the real world grin

Have you checked for cracks or a leak on the case of the battery that needs more topping?

Yes. Didnt see any cracks, however will reinspect again.what i noticed is that the batts boil and reslease fumes during absorb at 58v..ie 14.5v per battery. And some cells boil more than the others. Batt body gets very hot abt 60 deg C

So i think the major loss of the electrolyte is from the boiling during absorption charging, hence why am contemplating reducing it to 14.1v..
Wondering if the plates are heavily sulphated.some cells the electrolyte is clear, while in a few, it is discolored, especially the major electrolyte loss culprits

I recall some has complained of similar issue in past. Dont know if it was resolved
Re: Solar Energy, A Complement To FTA by mank1234(m): 8:23am On Jul 03, 2020
ojeysky:


I just don't want to expend on ICC as I already have emoncms up and running (which ICC also uses) on my pi and it gives me the stats I needed. So you can point me to the seller, but I need to learn how to use node-red first

If you send him a mail on the email I posted he'll send you the link to download the software. After installing you send him your machine ID for him to activate one month trial. When you make payment you have access for life on the particular pi.

When you're able to get the node-red up and running, kindly put me through as well. I learnt it's simple with good looking user interface and works with home assistant.
Re: Solar Energy, A Complement To FTA by mctfopt: 8:37am On Jul 03, 2020
ojeysky:





Yes but that should only the applied with small banks else one may use one kidney to buy BMS grin, if you have a over 400AH bank then you don't have to look for a 400AH BMS because the reality is that you won't generate or consume up to that amount of current instantaneously. So for 150AH and above a 100A BMS is fine. If you get higher at a good deal, all well and good


Well, I think I should have worded it this way choose a BMS based on both your battery and your inverter/PV's charging current capability cheesy
Re: Solar Energy, A Complement To FTA by mctfopt: 8:41am On Jul 03, 2020
ceaser:


He said the BMS will burn out if the battery is exposed to a higher than rating current.

I think in such instance, what the BMS does is to shut down (activate overcurrent protection) rather than burn out.

Or am I missing something?


The leads of a BMS are often rated according to the charging current capability. Eg if you have a 50A BMS and you push 120A through it, the lead wires will most likely melt or even the BMS enclosure itself! This is because the cooling factors may obviously not be in place for that high current capacity. I've experienced this.
Re: Solar Energy, A Complement To FTA by futurenix(m): 9:04am On Jul 03, 2020
Ok. Thank you but what if the SCC and inverter charger both can supply a max of 80A each totalling 160A ( not sure if that can happen at same time) and the battery is 100AH or 200AH

mctfopt:


Chose BMS based on the battery in use. Eg if you buy an 100AH LFP that can do a 1C charge ie 100A, you are better off getting a 100A BMS. This BMS can work with a 60A SCC. So if your PV supplies 60A and your inverter charger supplies 30A, the BMS can handle that. But if you buy a 50A BMS and your PV supplies 60A and charger 30A, the BMS will burn out leaving your battery charging/discharging and management unregulated.

Another instance if your battery can only take 50A, buying a 60A BMS is advised, so if the charging exceeds 60A, the BMS should be able to cut it off saving your battery from being overcharged.
Re: Solar Energy, A Complement To FTA by ceaser: 9:14am On Jul 03, 2020
mctfopt:



The leads of a BMS are often rated according to the charging current capability. Eg if you have a 50A BMS and you push 120A through it, the lead wires will most likely melt or even the BMS enclosure itself! This is because the cooling factors may obviously not be in place for that high current capacity. I've experienced this.

@ bolded
Oh! Well experience na master.
Na theory level me I still dey. grin
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 9:30am On Jul 03, 2020
ojeysky:


Why not? for a proper CC it will only just peak out at 40A. When I was using felicity hybrid temporarily which is rated for 60A 1.5kw array, it often gets to the max (and as far as 1.7kw occasionally) and that's it, the rest of the power from my 2.250 array gets wasted. I think reasonable oversizing helps to guarantee constant level of harvest during bad weather condition

It's okay then, if the plan was to oversize.
Re: Solar Energy, A Complement To FTA by ojeysky(m): 9:30am On Jul 03, 2020
mank1234:


If you send him a mail on the email I posted he'll send you the link to download the software. After installing you send him your machine ID for him to activate one month trial. When you make payment you have access for life on the particular pi.

Yes, I just don't see a need to pay for what I already have(in different form)


When you're able to get the node-red up and running, kindly put me through as well. I learnt it's simple with good looking user interface and works with home assistant.

I have node-red setup and running on my pi....I just now need to learn how to setup the flows. I never get time to sit down and study it...I was hoping for some jump start from you or anyone else grin
Re: Solar Energy, A Complement To FTA by tonididdy(m): 9:55am On Jul 03, 2020
ceaser:


I don't have an Xbox S one. And yes I have read somewhere in NL that it approaches 200w but most comments online say otherwise. I am not a user so I can't base my claim on personal experience.

And that reminds me. How can one develop likeness for these game consoles? Is it a natural affinity or does one have to nurture it? The only time I played video games as a kid were those days of 2D 96-in-1 Super Mario Bros tekken top loading cartridge type Nintendo console.

At times I like when people have fun playing it with their spouses or children. I've also heard it kinda improves reflexes and mentation. But I can't seem to bring myself to consider playing it or even consider it a worthy investment or acquisition.

Ok sir
Re: Solar Energy, A Complement To FTA by tonididdy(m): 9:56am On Jul 03, 2020
brainhack:


I have sent you a PM.
Sorry bro my NL PM don't work

Pls send me a mail
Re: Solar Energy, A Complement To FTA by brainhack(m): 12:44pm On Jul 03, 2020
[s]
brainhack:
1.5KVA Inverter + 200 mah batteries (x 2) for sale (used - over 2 years old but still in top like-new condition cuz I never connected heavy appliances to it). I called a technician to test it recently, yes - still in top condition.

The last time I tested it myself with;
1) 40” Samsung Curve TV + Fan + X Box One S = Lasted about 13 hours (Note: 13 straight hours of gaming & X Box One S is an energy hungry monster).
2) Just lights + Fan + charging Laptop + phones = Lasted over 30 hours.

You don’t have to take my word for it, bring your technician along for testing.

I don’t need it again cuz I am moving to an apartment building with 24 hours guaranteed electricity.

Last Price: 190k 175k
Location: Lekki


sold
Re: Solar Energy, A Complement To FTA by ojtech8291: 6:57pm On Jul 03, 2020
Is this setup correct? The cable from CC to the Inverter battery nodes instead of directly to the battery. Any implication?

Which can easily fried MPPT CC, high Voltage or high Current?

Re: Solar Energy, A Complement To FTA by ojeysky(m): 7:02pm On Jul 03, 2020
ojtech8291:
Is this setup correct? The cable from CC to the Inverter battery nodes instead of directly to the battery. Any implication?

Which can easily fried MPPT CC, high Voltage or high Current?

Unless the inverter has a dedicated port for that and your CC also supports that don't do it! Output from CC should go to your battery terminals!
Re: Solar Energy, A Complement To FTA by mctfopt: 9:08pm On Jul 03, 2020
futurenix:
Ok. Thank you but what if the SCC and inverter charger both can supply a max of 80A each totalling 160A ( not sure if that can happen at same time) and the battery is 100AH or 200AH


Depends on the spec of the battery. Some battery can take 1C charge. So if the 200AH is such battery then you don't have a problem. As for the 100AH, that 160A definitely doesn't look good. So in that case, you'll have to make do with either one of the source charging it...either PV or inverter. So that means during the day, you can always switch off the power input into the inverter and run on only solar. At night you can put it back on. Just remember to turn it off in the morning grin grin
Re: Solar Energy, A Complement To FTA by mctfopt: 9:11pm On Jul 03, 2020
ceaser:


@ bolded
Oh! Well experience na master.
Na theory level me I still dey. grin

Lol grin

The experience wasn't funny. I was jejely enjoying the current overflow, the next thing I started perceiving the smell of burning rubber! I quickly rushed to the setup and noticed the BMS has started to melt..had to quickly turn off one source of charge. Funny enough BMS is still good grin
Re: Solar Energy, A Complement To FTA by DUI: 10:28pm On Jul 03, 2020
Good day colleagues on NL. I am new to this thread and have been impressed with the comments I have read so far. It is amazing to read so much technical information coming from so many people in just one place. Please I need assistance from the gurus.

I am trying to replace my inverter batteries and also install solar panels in my home. I need information on where to get access to good quality 12v 200ah solar batteries and 300 or 400 w panels in Abuja and do not want to fall into the wrong hands. If you can assist, please provide information in this order: type, price and location of store and finally phone number.
Re: Solar Energy, A Complement To FTA by futurenix(m): 11:33pm On Jul 03, 2020
Thank you plenty.
mctfopt:


Depends on the spec of the battery. Some battery can take 1C charge. So if the 200AH is such battery then you don't have a problem. As for the 100AH, that 160A definitely doesn't look good. So in that case, you'll have to make do with either one of the source charging it...either PV or inverter. So that means during the day, you can always switch off the power input into the inverter and run on only solar. At night you can put it back on. Just remember to turn it off in the morning grin grin
Re: Solar Energy, A Complement To FTA by mctfopt: 8:58am On Jul 04, 2020
Who can help my friend solve this problem? He has an LFP with 24v 60A Daly BMS common port. The problem is that whenever the LVD is triggered, it does not automatically reset when charge flows from PV (say the next morning when the sun comes up) unless manually bypassed. By manual bypass I mean using a short cable to connect to the battery's negative and to the point where the BMS solar charge controller negative and inverter terminal battery negative meets, in simple terms replacing the BMS with a short wire. Is there a way to make this automatic? For instance in a remote site, it is expected that the inverter comes up by itself (if it the batteries drain at night) the next morning when the sun comes up. But this behaviour will make such a scenario not play out.

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