Jump to content

Solar connection


Solar newbie
 Share

Recommended Posts

Good day all. 

I'm new in the solar power and recently got me a 3KVA hybrid inverter with 2 x 12v 200ah batteries in series, I use to get about 8hrs with running only essentials on it when we have load shedding now the question...... I installed 2 x 285 32v 9.05A solar panels in parallel connected to my hybrid inverter but I'm only getting max 320w on a nice sunny day. I do have a emergency disconnecter between the panels and the inverter and obviously the parallel junction box. Am I doing something wrong? 

Link to comment
Share on other sites

Hi @Hannes Bester,

Please post (or report) a picture of the label on our inverter, so all can know exactly which inverter you have.

I suspect at this early stage that your voltage going into the MPPT is a tad low, as most Voltronics (Axpert) models have a 40 to 65 - 145 V limit. If yours is one with that MPPT, I'm suprised it's working at all. So perhaps look at connecting the panels in Series vs Parallel, to get closer to the (optimum) operating voltage of the MPPT. Approx 90 - 110V for the model shown below.

For the new 450V MPPT models, something like 300 - 380V should be ideal.

Inked1215269594_Axpert5KValabel-min.thumb.jpg.1fe1e30b4fc4b3b48808c6599b731564_LI.jpg.536f0589f6b65e334b818af490d67d22.jpg

Link to comment
Share on other sites

On 2020/03/31 at 4:04 PM, DaveSA said:

Therefore a 24V Inverter, and probably these specs

Solar Charger & AC Charger

  • Maximum PV Array Power: 600 W.
  • MPPT Range @ Operating Voltage: 30 VDC - 66 VDC.
  • Maximum PV Array Open Circuit Voltage: 75 VDC.
  • Maximum Solar Charge Current: 25 A.

Hi hope you all having a good day? Tell me is it possible to run a separate solar controller before it connects to my inverter mppt controller. or to use a solar controller with its own panels directly to the batteries as my inverter is limiting the amount of panels, I currently have 2 x 285w 33v which is my limit on the inverter "600w"

Link to comment
Share on other sites

On 2020/03/31 at 11:11 AM, Sidewinder said:

Hi @Hannes Bester,

Please post (or report) a picture of the label on our inverter, so all can know exactly which inverter you have.

I suspect at this early stage that your voltage going into the MPPT is a tad low, as most Voltronics (Axpert) models have a 40 to 65 - 145 V limit. If yours is one with that MPPT, I'm suprised it's working at all. So perhaps look at connecting the panels in Series vs Parallel, to get closer to the (optimum) operating voltage of the MPPT. Approx 90 - 110V for the model shown below.

For the new 450V MPPT models, something like 300 - 380V should be ideal.

Inked1215269594_Axpert5KValabel-min.thumb.jpg.1fe1e30b4fc4b3b48808c6599b731564_LI.jpg.536f0589f6b65e334b818af490d67d22.jpg

 

15859046020983439300817329894644.jpg

Link to comment
Share on other sites

1 hour ago, Hannes Bester said:

1585904936113295873067861356908.jpg

Is this the maximum PV input voltage you are seeing ?

I have the 2KVA system with 6 x 335W canadiansolar panels and the same MPPT and have seen a maximum PV input voltage of around 82V

Link to comment
Share on other sites

4 minutes ago, Hannes Bester said:

I'm not 100% sure but on the system that I have can I add more panels? I don't have the manual. On the internet I found one saying max 600w so I'm not sure if I can add more panels to it. The current max from my panels are 570w

The Solar Charge Controller looks the same as mine so it can go up to 1600W according to the manual I have and I have 2050W connected and have not seen any issues yet.

I have set the maximum charge current (setting 02) to 40A so it's never going to overload the system. 

I have Lithium battery bank so you can charge them at a lot higher current.

I would check with your battery manufacturer what the maximum current should be and set up the inverter accordingly.

 

Link to comment
Share on other sites

9 minutes ago, Hannes Bester said:

Oh I did change the panels to series now, now I'm getting 58v to 62v but not much difference on the amps 

Ok with series the voltage will increase and amperage decrease but the overall power will remain the same.

The reason for higher or lower voltages is determined by the solar charger settings as they are designed differently.

I have found that my setup with 24V works better with voltages in series.

Link to comment
Share on other sites

2 hours ago, Hannes Bester said:

Thanks for all the feedback guys. I'm running 2 x 200Ah lead acid batteries and my charger is set at 30A not sure what the required charging current is but it was set at default 1585923326660520519567954890147.thumb.jpg.69516c2c31fe6869f332f502f0517075.jpg

Do have a datasheet for the batteries or a picture of it

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...