balogunsam:
please help. Someone installed this mppt charge controller for my mum and it has burnt twice at this same point (where wires from the solar panels connect to the charge controller).
Happened first time, he replaced it and it happened again. He was about collecting money from her to buy another one again but this time she reached out to me.

It’s a 12v 1kw inverter system with 6x 180w solar panels and 200ah battery. She uses it at her store for a small fridge, a desktop computer and fan.

Is this a problem with the power from the solar panels being too much? Or the charge controller is thrash?

Please help. Any insight appreciated.

babaegun:
My dashboard today...

Solar is sweet..

All thanks to Oga Dapsyra (Senior Mentor), Bigbrovar (Senior Mentor), Ojesky (Senior Mentor, node-red master), isangjohnson (assisted me in getting a good price with my Eve batteries.) & zeestone99 (soft spoken, gentle and very reliable shipping Master. He got my Eve batteries to Abuja seamlessly ).

AC 24/7. Life is good.

Queed:


Most of the 'inverter' termed devices (inverter fridge, watching machine etc) are typically switching power designed (aka SMPS), and a properly designed SMPS, built to handle above 100W should have active power factor correction ( PFC ) built into the design.

In the absence of this PFC, the load (your inverter AC in this case) would affect the phase relationship of the inverter output, consequently affecting any meter equipment that depends on the standard current/voltage relationship to produce correct values.

Also, Normal AC, fridge, washing machine general affect power factor, hence I suspect your meter to be the problem here, it seems to be unable to measure the correct power.

swagifted:
Meanwhile I am in the market looking for this hybrid Air condition split units... The one you can connect the solar panel direct to the outdoor unit... Deye has it on thier website, but all the deye dealers i have reached out to don't have it in stock...

dollarnaira:


Not the 60A, but the capacity of a 12v system.
Almost all charger controllers at 12v(one battery) of any amp of charger controller CANNOT DO ABOVE 700w. Your total wattage from the panels exceed what the cc can take. You are feeding the cc with 1080w (6×180w) instead of max of 700w. Check the label at the back of the cc as the info is there.

Obnoxious2001:


If you find it update us please am following

Trippledots:


I don't think this is correct.

I have fed 1.25kwp to this controller but a 30A model. The current stays withing the CC rating and Voc is about 31V_system is still working, no issues.

Valto:
24v 4.2kw hybrid inverter
5pcs 550w jinko panels
24v 280ah 7168kwh lifepo4 lithium, from me
that is all u need

babaegun:
My dashboard today...

Solar is sweet..

All thanks to Oga Dapsyra (Senior Mentor), Bigbrovar (Senior Mentor), Ojesky (Senior Mentor, node-red master), isangjohnson (assisted me in getting a good price with my Eve batteries.) & zeestone99 (soft spoken, gentle and very reliable shipping Master. He got my Eve batteries to Abuja seamlessly ).

AC 24/7. Life is good.

MeinKampf:
I need a very good solar inverter engineer in Ibadan or that can work at Ibadan

jasp12:


Do you have 24v 100ah available?

EduTechTainMent:


You mean you exceeded the maximum wattage rating for the cc?

In his case with a 60A cc, the maximum PV wattage supported should be (12V * 60A) 720w. His installer fed the cc with (180 * 6) 1080w from the panels.

Is the cc a pwm or mppt?

noobody:
Hello family,
I think the time has finally come.

I need the rough estimate of what it would take me to go completely off grid.

My 2.5Kva generator powers all appliances in my apartment effortlessly including a 205 ltr freezer and a 180ltr fridge,,1000W home theater system,smart 50 inch tv,2 ceiling fans,4 standing fans,and numerous energy saving light bulb(which are not always on simultaneously),but whenever I want to use the microwave I switch off all appliances
I need something similar from the solar/inverter set up.

If I can also include something that can power 1.5HP regular AC also,

I don't mind the cost without the AC.

Please I need the exact cost that would take me off grid,

This new tariff rate is killing me.

EduTechTainMent:


You mean you exceeded the maximum wattage rating for the cc?

In his case with a 60A cc, the maximum PV wattage supported should be (12V * 60A) 720w. His installer fed the cc with (180 * 6) 1080w from the panels.

Is the cc a pwm or mppt?

noobody:
Hello family,
I think the time has finally come.

I need the rough estimate of what it would take me to go completely off grid.

My 2.5Kva generator powers all appliances in my apartment effortlessly including a 205 ltr freezer and a 180ltr fridge,,1000W home theater system,smart 50 inch tv,2 ceiling fans,4 standing fans,and numerous energy saving light bulb(which are not always on simultaneously),but whenever I want to use the microwave I switch off all appliances
I need something similar from the solar/inverter set up.

If I can also include something that can power 1.5HP regular AC also,

I don't mind the cost without the AC.

Please I need the exact cost that would take me off grid,

This new tariff rate is killing me.

noobody:
Hello family,
I think the time has finally come.

I need the rough estimate of what it would take me to go completely off grid.

My 2.5Kva generator powers all appliances in my apartment effortlessly including a 205 ltr freezer and a 180ltr fridge,,1000W home theater system,smart 50 inch tv,2 ceiling fans,4 standing fans,and numerous energy saving light bulb(which are not always on simultaneously),but whenever I want to use the microwave I switch off all appliances
I need something similar from the solar/inverter set up.

If I can also include something that can power 1.5HP regular AC also,

I don't mind the cost without the AC.

Please I need the exact cost that would take me off grid,

This new tariff rate is killing me.

noobody:
Hello family,
I think the time has finally come.

I need the rough estimate of what it would take me to go completely off grid.

My 2.5Kva generator powers all appliances in my apartment effortlessly including a 205 ltr freezer and a 180ltr fridge,,1000W home theater system,smart 50 inch tv,2 ceiling fans,4 standing fans,and numerous energy saving light bulb(which are not always on simultaneously),but whenever I want to use the microwave I switch off all appliances
I need something similar from the solar/inverter set up.

If I can also include something that can power 1.5HP regular AC also,

I don't mind the cost without the AC.

Please I need the exact cost that would take me off grid,

This new tariff rate is killing me.

noobody:
Hello family,
I think the time has finally come.

I need the rough estimate of what it would take me to go completely off grid.

My 2.5Kva generator powers all appliances in my apartment effortlessly including a 205 ltr freezer and a 180ltr fridge,,1000W home theater system,smart 50 inch tv,2 ceiling fans,4 standing fans,and numerous energy saving light bulb(which are not always on simultaneously),but whenever I want to use the microwave I switch off all appliances
I need something similar from the solar/inverter set up.

If I can also include something that can power 1.5HP regular AC also,

I don't mind the cost without the AC.

Please I need the exact cost that would take me off grid,

This new tariff rate is killing me.

balogunsam:
please help. Someone installed this mppt charge controller for my mum and it has burnt twice at this same point (where wires from the solar panels connect to the charge controller).
Happened first time, he replaced it and it happened again. He was about collecting money from her to buy another one again but this time she reached out to me.

It’s a 12v 1kw inverter system with 6x 180w solar panels and 200ah battery. She uses it at her store for a small fridge, a desktop computer and fan.

Is this a problem with the power from the solar panels being too much? Or the charge controller is thrash?

Please help. Any insight appreciated.

RickyM:
Hello great people🫡🫡🫡
Good morning to y’all, please I need your opinion about this.
I have a solar setup before using 6 pieces of 280w panel but now that I got a bigger battery I bought another 6 pieces of panel but now 300W.
Should I connect the 6 pieces 300W I’ve just bought to the 6pieces of 280W I have with me before in the normal 2 series connection and then parallel them together afterwards or I should rather get a separate charge controller for the 6 pieces of 300W I’ve just bought and run the connection differently which will mean my hybrid inverter will be charging the battery and also the new charge controller I will be getting will also be charging the battery.

Dam5reey:


Incomplete data..
Provide the Panel data as well as the inbuilt CC data..

RickyM:

The old 280W panel output 30.8V and 8.2A while the new panel output 39.8-40.2V. I have not get the new charge controller so I can’t say what the cc is.
My hybrid inverter has an inbuilt charge controller that charges my battery before.
A picture of my inverter specification is attached below

Dam5reey:


The Answer is simple Get an MPPT controller for the New Set of 300w panels..

Your Inbuild Charge controller is only 50A and PWM. interesting to know how you connected the 6, 280w panels.. the best efficiency is to connect all 6 in Parallel. but I doubt that's the case.

If possible, Get 2 external controllers, 1 for the 280W set and a second for the 300W set.
The inbuilt CC is not efficient enough..

RickyM:


Thanks for the swift response.
My old connection is 2 in series (60v 8.2A) consecutively making three pair of 2 panels in series then parallel them together making it (60v 24.6A)… in an ideal condition the panel won’t output 8.2A as that’s just its rating, the best would be that it output 21A but if I connect everything in parallel then that would mean (30.8V and 42A) which is still under its rating.
Do you think 30.8V is enough for a 24V system?
I will get a new charge controller for the 300W panels as you’ve suggested.
MMPT charge controllers aren’t cheap and it’s efficiency difference ain’t that much according to the series of YouTube videos I’ve came across.

Dam5reey:


Exactly my guess, You are only using 3 panels.. all these while..
A PWM controller provides your batteries with the maximum available current, wasting excess Voltage.
So you connected 60V 24.6A to a PWM. Even in full Sun, it will supply your batteries with 28V at 24.6A. excess voltages or 3 extra panels wasted.

But if you do it all in Parallel. You will have 30.8V at 49.2A input and your batteries will charge at 28V at 49.2A.
Here you are pushing too much current, you need High Guage Wires, which is expensive!

With MPPT, you can maintain the 2 in series and 3 set in parallel.
With MPPT, you are receiving the same 60V 24.6A.. your batteries will receive 28V at about 49.2A.. because MPPT will converter excess Voltage to current.


2. When you say MPPTs are expensive.. and you are only getting 840 watts from a possible 1680w..?
You can use PWM. But connect it properly and size the cable properly too.

funshyboi:
I know this is not related here but I have checked NL no exact live thread that talks about AC.

Please what’s the cause of this, I’ve called an AC technician to fix it, unfortunately it’s not up to a month it starts again and the werey is not ready to come back .