Dkev:
dear house, I have a 310w solar panel that only outputs about 71w-85w instantaneous at full midday sun (connected to epever 40a mppt, batteries not fully charged, so it's not a float issue). what could possibly be wrong and how do I rectify the problem? (I have no electrical background). the voltage on the mppt is between 27-32v, it's just the amps that is quite small (I think it is behaving like a 120w module).should I ask someone to open the junction box? what should the person check for?

is ur setup/inverter 12v or 24v, whats ur avg daily harvest?, if 24v, that may be part of your problem.
2ndly whats the size of your cables, cc to batt bank and panel to cc

i have a mini system 1 x 12v 200ah, 250w panel and i harvest 1kwh avg daily, though max instantenous i have seen is 140w, probablly cos the load is small, and battery doesnt get depeleted much

earthrealm:


is ur setup/inverter 12v or 24v, whats ur avg daily harvest?, if 24v, that may be part of your problem.
2ndly whats the size of your cables, cc to batt bank and panel to cc

i have a mini system 1 x 12v 200ah, 250w panel and i harvest 1kwh avg daily, though max instantenous i have seen is 140w, probablly cos the load is small, and battery doesnt get depeleted much

it is a 24v system and the harvest is about 0.45- 0.55kwh daily. I have 2x300w connected in series to another controller (but mounted in an identical position) and that gives about 200- 400w, sometimes 500w briefly instantaneous. hence my concern

Dkev:


it is a 24v system and the harvest is about 0.45- 0.55kwh daily. I have 2x300w connected in series to another controller (but mounted in an identical position) and that gives about 200- 400w, sometimes 500w briefly instantaneous. hence my concern

mppt needs +5v headroom to work, ur system being 24v, if perhaps the batt is at 25v...ur panel outs btw 27v to 35v, so you can see that at anything below say 31v, it cant charge your batts,

you can also see that your other installation is doing better, cos you wired 2 panels in series, thus higher voltage headroom.

for the troublesome setup, either downgrade to a 12v setup or u connect have 2 panels in series.
am assuming your cable sizes and distance is within spec

Please house which is the best or let me say a good 3.5kva 48V inverter one can buy?

I also plan to pair the inverter with quanta batteries, is this a good combo?

Buy these cheap inverter batteries and power issues will be history. I offer full refund should the batteries fall short of expectation. Kindly whatsapp me on 08030803threeeightzero

Schneider but it comes st a premium

tsiriman:
Please house which is the best or let me say a good 3.5kva 48V inverter one can buy?

I also plan to pair the inverter with quanta batteries, is this a good combo?

tsiriman:
Please house which is the best or let me say a good 3.5kva 48V inverter one can buy?

I also plan to pair the inverter with quanta batteries, is this a good combo?

Victron is one of the best inverters you can get. Its global 5 year warranty is attestation to its high quality, engineering precision and ruggedness.
I am offering you a 3KVA 24V Multiplus inverter-charger for N425k.
Pls call/whatsapp 08118419901.

Ativ:


Victron is one of the best inverters you can get. Its global 5 year warranty is attestation to its high quality, engineering precision and ruggedness.
I am offering you a 3KVA 24V Multiplus inverter-charger for N425k.
Pls call/whatsapp 08118419901.

This is quite expensive above my budget, thanks

FabioPeter:
Schneider but it comes st a premium

Please suggest a cheaper option

Luminous 3.5KVA is ok. Pls avoid Sukam, the old model is rugged but the new one is bad market.

tsiriman:


Please suggest a cheaper option

earthrealm:


mppt needs +5v headroom to work, ur system being 24v, if perhaps the batt is at 25v...ur panel outs btw 27v to 35v, so you can see that at anything below say 31v, it cant charge your batts,

you can also see that your other installation is doing better, cos you wired 2 panels in series, thus higher voltage headroom.

for the troublesome setup, either downgrade to a 12v setup or u connect have 2 panels in series.
am assuming your cable sizes and distance is within spec

Check if the controller Voc will allow three panels in series and then use only one controller

tsiriman:
Please house which is the best or let me say a good 3.5kva 48V inverter one can buy?

I also plan to pair the inverter with quanta batteries, is this a good combo?

If planning solar upgrade in future Ipower [zinnox] is an option if your loads are only tv and fridge plus lights you can easily use a victron 800 VA which can Handel 1600 watts short time loads and much more efficient apart from reliability
You can even optimise buy buying only 2 batteries for 24v but higher ah

https://www.ebay.co.uk/itm/Victron-Mini-Inverter-Charger-Multiplus-12-24-48V-800VA-230V-FREE-EU-Delivery-/302428570028

Does anybody know how to equalize with fangpusun properly? I'm asking because when the set automatic equalization reaches it just equalize (absorption and float light on) for about 20 mins before switching back to float. I'm not sure that s enough time for equalization

tsiriman:


This is quite expensive above my budget, thanks

May have other options for you in your range. Please give me a call/whatsapp me.

FabioPeter:
Luminous 3.5KVA is ok. Pls avoid Sukam, the old model is rugged but the new one is bad market.

Thank you.
I was thinking of luminous 3.5KVA but will that be a good choice if I plan to upgrade to solar in the future?

pranil:


If planning solar upgrade in future Ipower [zinnox] is an option if your loads are only tv and fridge plus lights you can easily use a victron 800 VA which can Handel 1600 watts short time loads and much more efficient apart from reliability
You can even optimise buy buying only 2 batteries for 24v but higher ah

https://www.ebay.co.uk/itm/Victron-Mini-Inverter-Charger-Multiplus-12-24-48V-800VA-230V-FREE-EU-Delivery-/302428570028

Thank you for the suggestion but 800VA will be to small even though I don't plan to run AC or heater with it. I have 2 TVs and several fans.

Ativ:


May have other options for you in your range. Please give me a call/whatsapp me.

Will do

tsiriman:


Thank you.
I was thinking of luminous 3.5KVA but will that be a good choice if I plan to upgrade to solar in the future?

You can always incorporate solar panels and charge controllers to the luminous inverter at anytime.

Namzy:
Does anybody know how to equalize with fangpusun properly? I'm asking because when the set automatic equalization reaches it just equalize (absorption and float light on) for about 20 mins before switching back to float. I'm not sure that s enough time for equalization

One of the weak points of fangpusun is equalisation is automatically timed and decided by the cc charge algorithms which sometimes is too conservative. What you can do is to restart the charging process by turning of the pv input and pvoutput forcing it to restart the charging process. You might also considering forcing it by increasing the absorption voltage if you will not be at home in which case auto equalization will become useless to you. You can also increase the frequency to maybe every 10 days?

tsiriman:
Thank you for the suggestion but 800VA will be to small even though I don't plan to run AC or heater with it. I have 2 TVs and several fans.

I run two TVs, lights and at least 3 fans at any point in time on mine. It's the 375VA/48V model (300W). Reserved for nighttime loads.

tsiriman:


Thank you for the suggestion but 800VA will be to small even though I don't plan to run AC or heater with it. I have 2 TVs and several fans.

i have a 850va luminous hybrid inverter. two tvs(42 inch and a 55inch) are connected to it.(make sure they're on energy saving mode).ten 5watts energy saving bulbs and two small size(130watts and 70watts) standing fans and a ceiling fan are also connected to it and i run them all at once most of the time. the inverter is durable,it can meet your needs for now that is if you don't put on all you fans at once.

Saipro:

I run two TVs, lights and at least 3 fans at any point in time on mine. It's the 375VA/48V model (300W). Reserved for nighttime loads.

Thanks for sharing, this is the size I'm looking at, 3kw 48V.

olatade:




i have a 850va luminous hybrid inverter. two tvs(42 inch and a 55inch) are connected to it.(make sure they're on energy saving mode).ten 5watts energy saving bulbs and two small size(130watts and 70watts) standing fans and a ceiling fan are also connected to it and i run them all at once most of the time. the inverter is durable,it can meet your needs for now that is if you don't put on all you fans at once.

Thanks for sharing

bigrovar:

One of the weak points of fangpusun is equalisation is automatically timed and decided by the cc charge algorithms which sometimes is too conservative. What you can do is to restart the charging process by turning of the pv input and pvoutput forcing it to restart the charging process. You might also considering forcing it by increasing the absorption voltage if you will not be at home in which case auto equalization will become useless to you. You can also increase the frequency to maybe every 10 days?

Thanks I did increase the absorption but then after sometime it entered float. What I did was to increase float to 31v for 2 hours, hope that will suffice

tsiriman:


Thank you for the suggestion but 800VA will be to small even though I don't plan to run AC or heater with it. I have 2 TVs and several fans.

You can get a luminous 1500 VA solar hybrid. With 24v battery you can even save the battery cost


https:///product/luminous-luminous-1-5kva-solar-hybrid-inverter-4193884

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BATTERY BALANCER /EQUALIZER 48V -------------35,000
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Saipro:

I run two TVs, lights and at least 3 fans at any point in time on mine. It's the 375VA/48V model (300W). Reserved for nighttime loads.

what is the essence of using small inverter at night, to conserve energy?

JUO:
what is the essence of using small inverter at night, to conserve energy?

Think
- fewer batteries (with all the benefits like fewer failure points, lesser maintenance hassles, cost benefits, etc)
- shallower cycling
- same derived utility

Let me paint the picture: overnight, consumption altogether culminates to about 2,000W max on any given night. On a typical night, my energy use averages 1,300W. This includes the inverter's tare load. Specifically, my inverter claims about 130W max from that figure.

My daytime inverter on the other hand has a tare consumption of a minimum 1,200W overnight! In essence, the inverter on its own is able to drain the batteries as might the entire house household. Oversimplifying the maths, the inverter literally doubles my night-time consumption.

Here's the interesting conclusion: since my house runs entirely from panels during the day, the batteries come into play at night. If I halve my cycling depth, I can theoretically double my cycle life. If my bank might have lasted me 4 years with my PowerStar inverter, it should take me 8 years with the Victron. Another way to look at it is, I could halve the size of my battery bank while retaining the same days of autonomy, should the sun misbehave (which is purely a myth at this point for my panels are sufficiently oversized to take me to absorb everyday even if they don't do float on sunless days). That way, I can go for an extra 2 nights should something catastrophically go wrong with my panels (insufficient insolation no longer being an issue).

And this is a mere 3kWp of PV. Fewer panels required to get the job done - an unintended benefit. The panels had been there before the new inverter and were about 50% oversized. Effectively, I'm now 100% oversized.

All these and lots more by merely having a night-time inverter. The cost savings are within the first year and the benefits until the said inverter croaks. Or a guru here decides to test it with his trusted hammer (that hammer has acquired Mjölnir-like attributes).

Of course, all the aforementioned presume optimisation of your system.

Saipro:

Think
- fewer batteries (with all the benefits like fewer failure points, lesser maintenance hassles, cost benefits, etc)
- shallower cycling
- same derived utility

Let me paint the picture: overnight, consumption altogether culminates to about 2,000W max on any given night. On a typical night, my energy use averages 1,300W. This includes the inverter's tare load. Specifically, my inverter claims about 130W max from that figure.

My daytime inverter on the other hand has a tare consumption of a minimum 1,200W overnight! In essence, the inverter on its own is able to drain the batteries as might the entire house household. Oversimplifying the maths, the inverter literally doubles my night-time consumption.

Here's the interesting conclusion: since my house runs entirely from panels during the day, the batteries come into play at night. If I halve my cycling depth, I can theoretically double my cycle life. If my bank might have lasted me 4 years with my PowerStar inverter, it should take me 8 years with the Victron. Another way to look at it is, I could halve the size of my battery bank while retaining the same days of autonomy, should the sun misbehave (which is purely a myth at this point for my panels are sufficiently oversized to take me to absorb everyday even if they don't do float on sunless days). That way, I can go for an extra 2 nights should something catastrophically go wrong with my panels (insufficient insolation no longer being an issue).

And this is a mere 3kWp of PV. Fewer panels required to get the job done - an unintended benefit. The panels had been there before the new inverter and were about 50% oversized. Effectively, I'm now 100% oversized.

All these and lots more by merely having a night-time inverter. The cost savings are within the first year and the benefits until the said inverter croaks. Or a guru here decides to test it with his trusted hammer (that hammer has acquired Mjölnir-like attributes).

Of course, all the aforementioned presume optimisation of your system.

but must people are not aware of this energy conservation. My inverter is 14w and 3.5kw 48v at that. I can't use any inverter that the idle consumption is more than 20w henceforth. Any good system should survive with 120ah over night with basic load. Nice one with your logic

tsiriman:
Please house which is the best or let me say a good 3.5kva 48V inverter one can buy?

I also plan to pair the inverter with quanta batteries, is this a good combo?

For ruggedness buy Indian inverter, though u v to find a means to boost ur charging current(either solar or external charger) as they come with low charging current.

Call/whatapp 08117398294 to order.

3.6kva Microtek - 170k

Mercury battery available and affordable

200ah - 95k

Call/whatapp 08117398294 to order now

JUO:
but must people are not aware of this energy conservation. My inverter is 14w and 3.5kw 48v at that. I can't use any inverter that the idle consumption is more than 20w henceforth. Any good system should survive with 120ah over night with basic load. Nice one with your logic

Brand and model of inverter?