Jump to content

Inverter and batteries installation location


Greglsh
 Share

Recommended Posts

Hi

 

Starting to look at maybe installing a Sunsynk inverter and maybe a Hubble or 2. Problem I have is that I don't really have anywhere to install this that is close to the DB. I could install inside a built-in cupboard in a games/ computer room. I would have to install an extractor fan or 2 from the cupboard into the ceiling to circulate the air. Does this sound okay. The distance from this cupboard to the main DB is +_ 9 meters.

Link to comment
Share on other sites

On a warm day, like today in JHB, my Sunsynk gets to about 56 degrees with the fans going crazy during peak generation, 4 kW and a draw of about 6 kW ... Extra 2 from the battery.

My unit is in the garage, lots of space around it and I leave the garage door slightly open. 

Garage is warm  ... I think a cupboard would not work personally unless cooling is great. 

Link to comment
Share on other sites

8 hours ago, Greglsh said:

Problem I have is that I don't really have anywhere to install this that is close to the DB.

The inverter could also be further away there is no regulation stating it should be close to the DB. it’s only the cable that will be longer. My inverter is just over 20meter from my DB without problems.

The Sunsynk does create a bit of heat it would be best to install it where their is a bit of air circulation. Extractor fans could also work to extract the heat, only problem is you are adding a small parasitic load on the inverter that could be avoided if it’ was in a naturally cooler area.

Link to comment
Share on other sites

Our 12kw Sunsynk is in a cupboard and does not get past 33 degrees. Made ventilation holes in top of cupboard for air to escape into celing and vents at bottom of cupboard doors to suck in cooler air. Cupboard is inside house so much cooler than say our garage. 

I guess our inverter runs cooler as it does not work close to it's max capacity. Also in the cupboard are 3 hubble batteries 

I attached 2 fotos

 

20211107_113518.jpg

20211107_113505.jpg

Edited by Chris_H
Added photos
Link to comment
Share on other sites

46 minutes ago, Chris_H said:

Our 12kw Sunsynk is in a cupboard and does not get past 33 degrees. Made ventilation holes in top of cupboard for air to escape into celing and vents at bottom of cupboard doors to suck in cooler air. Cupboard is inside house so much cooler than say our garage. 

I guess our inverter runs cooler as it does not work close to it's max capacity. Also in the cupboard are 3 hubble batteries 

I attached 2 fotos

 

20211107_113518.jpg

20211107_113505.jpg

Hi Chris. I have the same unit. Is the 33 degrees air temp or the temp on the inverter?

I have the same unit ...

Link to comment
Share on other sites

As far as cooling goes, I have a fanless Goodwe (not a good design, in my opinion) inverter. In summer I regularly saw temps in the upper 40's.

Bought a simple 3 fan system that runs off mains. The fan speed can be set. What I did was put the fan on top of the inverter and set the fan speed so one cannot hear it. I put it on a timer switch, turns on at 10am and off at 6 pm, inverter stays at 35C, irrespective of the outside temp.

 

Fan.jpeg

Link to comment
Share on other sites

5 hours ago, Chris_H said:

hi Jay

 

It's the air temp in the cupboard

Ok.   Thanks ... Air temps are barely over 30 degrees but the inverter gets warm. Temp on the screen said 56 degs at the peak production and hottest part of the day over the weekend. 

 

Link to comment
Share on other sites

1 hour ago, JayN said:

Ok.   Thanks ... Air temps are barely over 30 degrees but the inverter gets warm. Temp on the screen said 56 degs at the peak production and hottest part of the day over the weekend. 

 

Where do you check inverter temp?

 

Link to comment
Share on other sites

On 2021/11/07 at 9:14 AM, Greglsh said:

Hi

 

Starting to look at maybe installing a Sunsynk inverter and maybe a Hubble or 2. Problem I have is that I don't really have anywhere to install this that is close to the DB. I could install inside a built-in cupboard in a games/ computer room. I would have to install an extractor fan or 2 from the cupboard into the ceiling to circulate the air. Does this sound okay. The distance from this cupboard to the main DB is +_ 9 meters.

You can run great distances with cabling, no need to have the inverter connected close to the DB, mine is running > 50 meters.

Link to comment
Share on other sites

RabidBunny 

Do the panels not need to be closer to the inverter, I think you can run from the "output" of the inverter to the DB board quite far, but I think the DC cables need to be as short as you can get them as they are thicker and more expensive. 

Am I correct or can you run them quite far as well.

Link to comment
Share on other sites

I have my Sunsynk outside under an awning, with the Hubble battery in the laundry on the inside of the wall.

The battery cables need to be as short as possible. They are expensive to begin with and the longer you make them the ticker they should be. The DC cables to the solar panels can be longer and you'll probably buy a 50m roll to work with. The AC cables can easily be even longer and will likely be the cheapest of the three.

Link to comment
Share on other sites

On 2021/11/08 at 8:32 AM, FixAMess said:

Bought a simple 3 fan system that runs off mains. The fan speed can be set. What I did was put the fan on top of the inverter and set the fan speed so one cannot hear it. I put it on a timer switch, turns on at 10am and off at 6 pm, inverter stays at 35C, irrespective of the outside temp.

Can I ask, when you say "put the fan on top of the inverter" do you mean just that? Just set them down on the top of the inverter? I ask because your post piqued my interest. I have an ES in a cupboard, and it's showing an internal temperature of 46 degrees right now. Exactly the situation you describe. So I'm keen.

Also, if I may, where did you source it. I did some googling for cooling fans and I see wildly varying prices. OK... a fan is not just a fan, some of those will be bigger and more powerful than others.

Link to comment
Share on other sites

1 hour ago, Bobster said:

Can I ask, when you say "put the fan on top of the inverter" do you mean just that? Just set them down on the top of the inverter? I ask because your post piqued my interest. I have an ES in a cupboard, and it's showing an internal temperature of 46 degrees right now. Exactly the situation you describe. So I'm keen.

Also, if I may, where did you source it. I did some googling for cooling fans and I see wildly varying prices. OK... a fan is not just a fan, some of those will be bigger and more powerful than others.

Yes, I literally put it on top of the cooling fins, helps to draw air over the fins. I bought it on Aliexpress, as in my post, the 3 fan one. It really works well and the fan speed is adjustable with a dc resistor switch (??). The fan can probably be hooked up to a rasberry PI with a temp meter/probe to regulate the speed if one has the time to play around a bit. I think any old PC fan might work, but the one I bought is really sturdy and so far has not given any problems.

Link to comment
Share on other sites

On 2021/11/08 at 7:10 PM, Greglsh said:

RabidBunny 

Do the panels not need to be closer to the inverter, I think you can run from the "output" of the inverter to the DB board quite far, but I think the DC cables need to be as short as you can get them as they are thicker and more expensive. 

Am I correct or can you run them quite far as well.

They don't really have to be close, however the further you go the thinker your cable needs to be (both AC and DC share this same logic), in order to compensate for voltage drops.

I run all my panels on 6mm² (distances vary starting from 15 meters to > 60 meters), some would say 4mm² would suffice, but I use thicker cables as I also compensate for heat losses, etc ...

* PS: The AC cables are usually thicker than DC (as AC is the combined output of your DC inputs, which is usually a couple of strings) ...

Edited by RabidBunny
Link to comment
Share on other sites

On 2021/11/09 at 7:09 AM, RyanE said:

Thick House wire is also expensive. Remember its your distance x 3 for earth neutral and live. Don't buy this online rather find a electrical distributer supplier they are cheapest

 

It also depends on your earthing system, as one earth wire from the DB to inverter(s) is usually sufficient, if you have a proper changeover that establishes the earth/neutral bond when the grid drops off, then that earth wire is usually shorter and closer to the inverter(s).

I have a 4 x Core 16mm² - SWA [Armored] Cable (+ external earth cable) running > 80 meters; L+N+E from mains to the garage => L+N from garage back to mains - with a separate earth wire connected locally to an earth spike [for the bonding] ~ all electrical points to and from various sections are established in the mains panel.

The costs of the cable(s) was a drop in the bucket, compared to building a "secured storage space" where I could place the equipment ... protecting it against weather conditions and the SA "tsotsi".

Link to comment
Share on other sites

One consideration if you install a Sunsynk, it comes with a CT coil that clips over your main incoming grid supply cable this then connects to the inverter. It comes with wires about 5 meters long. The manual say you can extend them another 10 meters with same type of wiring. This could be a potential problem for installers who honor the manual if the distance is further than the 10 meter. I was worried about that distance as mine is about 25meters, I extended my own wires with 1.5mm flat twin and it works, but just be aware of this fact.

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...