The Battery Thread (Solar / Inverter)

Pulserider

Pulserider

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furpile said:
Are you planning to have a freestanding panel or fixed to the roof. It would be best to get an electrician in to do this, I don't know what breakers etc is needed. Wire size would depend on the panel you choose, which determines the current, and the distance.

This article was posted previously and has helped me, this will give you a good idea of how to size the panels according to your inverter.
solaradvice.co.za

Solar Panel Array: How to Size An Array - Solar Advice

Learn how to size your own Solar Panel Array. You'll learn the basics and what information you will need to look out for on your inverters data sheet.
solaradvice.co.za solaradvice.co.za
Click to expand...

Fixed onto the roof...
 
RonSwanson

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Mzezman

Mzezman

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Install done

5kw Sunsynk
8 x 330w panels facing North
4.8 kwh Dyness battery

Installation done by Powerguru in Garsfontein in about 7hours. DB split into essentials and non essentials. Did a loadshed test and all ran with no issues or interruptions at all. Will monitor over the next few days and see what, if any settings, need to be changed.

Question: where was your guys' CT coil installed? In your Mains DB or in the Sunsynk Inverter?


20211203_173150.jpg 20211203_175729.jpg Screenshot_20211203-180035_SOLARMAN%20Smart.jpg
 
Last edited:
RonSwanson

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Mzezman said:
Install done

5kw Sunsynk
8 x 330w panels facing North
4.8 kwh Dyness battery

Installation done by Powerguru in Garsfontein in about 7hours. DB split into essentials and non essentials. Did a loadshed test and all ran with no issues or interruptions at all. Will monitor over the next few days and see what, if any settings, need to be changed.

Question: where was your guys' CT coil installed? In your Mains DB or in the Sunsynk Inverter?


View attachment 1206546 View attachment 1206548 View attachment 1206550
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Congratulations on the neat install and those panels especially look very beautiful :love: Good to see that you still have some roof space left over. I bet you a case of beer that before Easter you will have another 8 (at least).

My own 5.5K's CT is in the main grid feed DB enclosure. You can do it inside the inverter, but then you have to shift it if you want to add non-essential loads. I have one shaved-earth plug point on non-essential: my prepaid meter which I last used over a year ago.

Looking for the earth neutral bridge relay: is it installed inside the Sunsynk?
 
Mzezman

Mzezman

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RonSwanson said:
Congratulations on the neat install and those panels especially look very beautiful :love: Good to see that you still have some roof space left over. I bet you a case of beer that before Easter you will have another 8 (at least).

My own 5.5K's CT is in the main grid feed DB enclosure. You can do it inside the inverter, but then you have to shift it if you want to add non-essential loads. I have one shaved-earth plug point on non-essential: my prepaid meter which I last used over a year ago.

Looking for the earth neutral bridge relay: is it installed inside the Sunsynk?
Click to expand...
Thank you, yeah the plan is to definitely get more panels and potentially even another battery in Feb if funds allow

Given that my CT is installed in the inverter and the inverter is only powering essentials can i assume thay i wont be able to back-feed excess PV to the non essentials (geysers etc) once battery is full and essebtual load is minimal?
 
RonSwanson

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Mzezman said:
Thank you, yeah the plan is to definitely get more panels and potentially even another battery in Feb if funds allow

Given that my CT is installed in the inverter and the inverter is only powering essentials can i assume thay i wont be able to back-feed excess PV to the non essentials (geysers etc) once battery is full and essebtual load is minimal?
Click to expand...
Of course you can, if you have a spinning disk meter (without the ratchet), you just have to untick zero export.

I am more worried about the earth neutral bridge relay: is it installed inside the inverter as well?
 
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maxxis

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007B08E5-B9BF-4B37-8835-9B4480216C03.jpeg

Where we are to date.

As soon as the new metal conduit is installed in the roof we can proceed to wire the two PV groups to the inverter.

Batteries should be here middle next week I think so holding thumbs for the install to be completed by next weekend.
 
Mzezman

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RonSwanson said:
Of course you can, if you have a spinning disk meter (without the ratchet), you just have to untick zero export.

I am more worried about the earth neutral bridge relay: is it installed inside the inverter as well?
Click to expand...
I am not sure about the Earth Neutral Bridge tbh... im assuming it shouldnt be inside the inverter?
 
RonSwanson

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Mzezman said:
I am not sure about the Earth Neutral Bridge tbh... im assuming it shouldnt be inside the inverter?
Click to expand...
It can be installed there, some are small enough. Best to ask your installer. Or whip the cover off and take a squizz.
 
gbyleveldt

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Ideally your CT clamp should be installed on the main feed. Even if you don’t plan on exporting past your main DB. The reason for this is so that excess PV can still feed your non-essential loads when grid is available. With CT clamp installed in the inverter, I don’t see how it’ll be possible to offset non-essentials with PV, as the inverter has no way of knowing how much the non-essentials are drawing?
 
Mzezman

Mzezman

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gbyleveldt said:
Ideally your CT clamp should be installed on the main feed. Even if you don’t plan on exporting past your main DB. The reason for this is so that excess PV can still feed your non-essential loads when grid is available. With CT clamp installed in the inverter, I don’t see how it’ll be possible to offset non-essentials with PV, as the inverter has no way of knowing how much the non-essentials are drawing?
Click to expand...
Thanks, that makes sense... I will ask the installer to come and add it to the main DB next week.
 
RonSwanson

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Mzezman said:
Took some pics...

Any ideas? View attachment 1206712 View attachment 1206714 View attachment 1206716
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I see the CT, but no earth neutral bridge relay. Difficult to see, but it should be wired like this, Sunsynk call it an earth bond relay:

1638564563600.png

If you have no loads before the inverter (non-essential loads), then it's possible that your installer skipped it as unnecessary, because it will enable an earth for these loads when the inverter is "islanding", and if you do not have them then it's extra expense, but I had it installed anyway because it was 1) specified, and 2) I wanted to be as flexible as possible. You might want to just query it with your installer.
 
Snyper564

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@AchmatK and all other sunsynk peeps anyone know what this setting is?

1638639243736.png

Reason I ask is that sometimes even though my SOC is set to say 10% battery will charge to 15%? This happens when i switch the grid back on.
 
Priapus

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I think the end might be neigh for my inverter.

Couple of weeks ago; it was not stable when panels were generating power. Fluctuating between 300w and 2500w constantly. Switching it to grid and keeping batteries on charge; it would stay at max PV to charge batteries. The only way to “fix” it was a hard reboot.

problem hasn’t come back again. But it wasn’t the first time it has done that.


The last night; the house lost power for a few seconds. Then again 10 mins later. This repeated three times or so before the wife woke me up to tell him something was up.

Go to garage and sure enough the inverter has a fault. Whilst trying to read the screen and see what it is - it rebooted and threw a fault. House lost power again.

So I did a hard reboot and it’s been fine ever since.

If it dies; I think a Sunsynk 8kw is the replacement.
 
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