Axpert invertors

Yip, 48v is correct, looking at 4 x 12v Daltec gel batteries for now.
10 x Resola 300W panels.
Wind turbine still under investigation.

reason for small battery bank is I am hoping for some new technology to reduce costs in the next 2-3 years.
Still need to do the solar geyser retrofit.
that accounts for my minor "windfall" budget
 
Draganchor said:
10 x Resola 300W panels.
Click to expand...

Please pay careful attention to the PV input ratings on the Axpert (particularly Voc). You can put either 9 (3 parallel strings of 3 series panels), or 12 (4 x 3) panels on the Axpert in order for the inverter not to be damaged. 12 panels (300W) is also pretty much the max that the inverter can take in terms of PV power.
 
savage said:
Please pay careful attention to the PV input ratings on the Axpert (particularly Voc). You can put either 9 (3 parallel strings of 3 series panels), or 12 (4 x 3) panels on the Axpert in order for the inverter not to be damaged. 12 panels (300W) is also pretty much the max that the inverter can take in terms of PV power.
Click to expand...

Again Savage, I am a bloody ID10T when it comes to all of this, I just know I have the Axpert arriving at a bloody decent price, I have a quote for the Resola 300W panels. (at a seem-ably responsible price but need a buy in to make the order)

please check your PM
 
Draganchor said:
Again Savage, I am a bloody ID10T when it comes to all of this, I just know I have the Axpert arriving at a bloody decent price, I have a quote for the Resola 300W panels. (at a seem-ably responsible price but need a buy in to make the order)

please check your PM
Click to expand...

Voc as I understand it is the important part
The inverter will only use current as needed from the solar
The plus point of more pannels is when the sun is low you can get more power from sun
 
thehuman said:
Voc as I understand it is the important part
The inverter will only use current as needed from the solar
The plus point of more pannels is when the sun is low you can get more power from sun
Click to expand...

Yup. But the Axpert has a very low Voc (145V if I recall correctly). It can draw max 60A (again, if memory serves me right). This is for the 5KVA version, so +- 8.7KW max from PV. It's a lot, but the strings needs to be configured correctly.

Exceed Voc, and very bad mojo will happen.
 
savage said:
Yup. But the Axpert has a very low Voc (145V if I recall correctly). It can draw max 60A (again, if memory serves me right). This is for the 5KVA version, so +- 8.7KW max from PV. It's a lot, but the strings needs to be configured correctly.

Exceed Voc, and very bad mojo will happen.
Click to expand...

Remind me of exploding caps hehe .
 
thehuman said:
Remind me of exploding caps hehe .
Click to expand...

Not wanting to derail the OPs thread, but it would actually be interesting to get one of these inverters (that had better days) to see the internals. Wonder if there's internal fuses on the DC inputs (Batt & PV). I guess it won't surprise me if there isn't any internal protection (hence the price).
 
many thanks to Savage for honest responses and advice.
I think I may have the opportunity to have this installed in about 3-4 weeks from now,
as I am an Greenhorn, I will include the pics and recommendations once I get this installed.

many thanks for all your input,
it is invaluable
 
hi this is exactly what I want to do Axpert seems fine from my research and I also would like to have full access to the unit via Pc for programming and info.
I have seen an external remote by Axpert is this any good?
Does it come with software?

Batteries would be Lead Acid x 4 no PV panels for now as no budget for that but someone mentioned the PV panels have to be wired by 9 or 12? So we can't start off with 1 or 2 and build from there?

Op how is your system wired to your current electrical system?
Can we please have pic of your setup and anyone else who has done this already?
A qualified electrician with the know how in Durban anyone knows?

Very excited on this venture
 
@ Amith, you can start with 3 , or six panels even. when further upgrading, you might be able to get away with 12 x 300Wp panels, as the NOCT values will fall safely in the acceptable range.

I took some photos wednesday two weeks ago, it really is dead simple to install. it is similar to pluggin in a UPS, except there aint no plugs. I have no formal qualification and it is really easy, it just want to neaten it up before getting a COC done, for a case of beer.

essentially this is how it goes:
Utility power to DB box in house through Earth leakage --> 16mm cable to POWER IN on Axpert --> 16mm from the axpert POWER out to the busbars. the batteries all linked up in series with 16mm cable, and stacked next to the deepfreeze to keep them cool (at 9'C) as it is proven to extend the life tremendously.

with a few posts im new here, but there is some nice youtubes from user justin case, his unit is the taiwan model by mpppower. send me a PM with your email and I will send you the photos, as i struggle to get them into this post.
 
oh yes, the external remote is just an extention of the panel on the axpert, in my view a waste of R800, unless you plan to hide the axpert somwhere in the garage or where it aint easily accessable
 
Vitamin_Sea said:
@ Amith, you can start with 3 , or six panels even. when further upgrading, you might be able to get away with 12 x 300Wp panels, as the NOCT values will fall safely in the acceptable range.

I took some photos wednesday two weeks ago, it really is dead simple to install. it is similar to pluggin in a UPS, except there aint no plugs. I have no formal qualification and it is really easy, it just want to neaten it up before getting a COC done, for a case of beer.

essentially this is how it goes:
Utility power to DB box in house through Earth leakage --> 16mm cable to POWER IN on Axpert --> 16mm from the axpert POWER out to the busbars. the batteries all linked up in series with 16mm cable, and stacked next to the deepfreeze to keep them cool (at 9'C) as it is proven to extend the life tremendously.

with a few posts im new here, but there is some nice youtubes from user justin case, his unit is the taiwan model by mpppower. send me a PM with your email and I will send you the photos, as i struggle to get them into this post.
Click to expand...

16mm on batteries won't be sufficient (batteries +- 98A), you won't get 16mm cable into the terminals of the Axpert either. I suggest you read the manuals, before just blindly making posts like this. But hey, if the internet told you that's how to do it, then it must be right!

PS: DC Disconnect on batteries, DC Disconnect on PV panels, breakers? You obviously have not given any consideration to safety at all. Are you even aware that your solar panels itself must be earthed? Do you even know HOW to earth it?
 
Can anybody recommend an installer in Bloemfontein. Have the cash ready for a system like this, but no idea who I can trust to do the job first time right.
 
Vitamin_Sea said:
@ Amith, you can start with 3 , or six panels even. when further upgrading, you might be able to get away with 12 x 300Wp panels, as the NOCT values will fall safely in the acceptable range.

I took some photos wednesday two weeks ago, it really is dead simple to install. it is similar to pluggin in a UPS, except there aint no plugs. I have no formal qualification and it is really easy, it just want to neaten it up before getting a COC done, for a case of beer.

essentially this is how it goes:
Utility power to DB box in house through Earth leakage --> 16mm cable to POWER IN on Axpert --> 16mm from the axpert POWER out to the busbars. the batteries all linked up in series with 16mm cable, and stacked next to the deepfreeze to keep them cool (at 9'C) as it is proven to extend the life tremendously.

with a few posts im new here, but there is some nice youtubes from user justin case, his unit is the taiwan model by mpppower. send me a PM with your email and I will send you the photos, as i struggle to get them into this post.
Click to expand...

Just a warning - there are a lot of errors in this post. The installation sounds suspect. (also noted by savage)
 
You must log in or register to reply here.
Back
Top
Sign up to the MyBroadband newsletter
X