Chrisy Posted May 21, 2015 Share Posted May 21, 2015 Hello everyone. I have been looking all over the web for someone with stock of the Axpert inverter. Do anyone perhaps know where I can get one? Even second hand is fine. I am looking for the 3K model. I have a couple of servers that I need to run. I already have 8 x 110ah batteries to connect it to. Quote Link to comment Share on other sites More sharing options...
superdiy Posted May 21, 2015 Share Posted May 21, 2015 Hi Chrisy You can try Delano, not sure if he has stock at the moment, but you can contact him. http://www.gumtree.co.za/u-seller-listings/v1u100261270p1 Quote Link to comment Share on other sites More sharing options...
Chrisy Posted May 21, 2015 Author Share Posted May 21, 2015 Thank you superdiy I will contact him today. Quote Link to comment Share on other sites More sharing options...
alistair Posted May 21, 2015 Share Posted May 21, 2015 I bought mine from geewiz.co.za. very good service. Quote Link to comment Share on other sites More sharing options...
Mike Posted May 21, 2015 Share Posted May 21, 2015 check with solar solved also, had stock yesterday and another 40ft container should be here next week Quote Link to comment Share on other sites More sharing options...
Chrisy Posted May 22, 2015 Author Share Posted May 22, 2015 Thanks everyone. Seems like I can get one. Just one question though. The smaller units only take 600 watts of panels. The load from my servers is 800w constant. Would it be better then for me to go for the 5kva unit that can take 3000watts of PV panels? Quote Link to comment Share on other sites More sharing options...
Chrisy Posted May 22, 2015 Author Share Posted May 22, 2015 Thanks everyone. Seems like I can get one. Just one question though. The smaller units only take 600 watts of panels. The load from my servers is 800w constant. Would it be better then for me to go for the 5kva unit that can take 3000watts of PV panels? Quote Link to comment Share on other sites More sharing options...
superdiy Posted May 22, 2015 Share Posted May 22, 2015 Thanks everyone. Seems like I can get one. Just one question though. The smaller units only take 600 watts of panels. The load from my servers is 800w constant. Would it be better then for me to go for the 5kva unit that can take 3000watts of PV panels? If you want to run your servers from solar most of the time you would obviously need more than 800W if their constant consumption is 800W. To get 800W from solar panels you would need to have 4 x 200W PV panels with direct sunlight and an irradiance of 1000W/m2 - that is ideal conditions without any losses. Currently (not summer) you will not necessarily get irradiance of 1000W/m2 and unless you are planning to use a sun-tracker to ensure that the sun hits your panels directly, you will not get 800W from 4 x 200W panels, not even in summer. Then you still have to add losses in cabling and the efficiency of the inverter. You don't have to get the 5KVA unit, according to the user manuals the 2KVA 24V Plus and 48V Plus models will accept PV up to 1500W and the 3KVA 24V Plus and 48V Plus models will accept PV up to 3000W - just make sure you get the "plus" models. I would suggest that you add panels of at least double the power required by your servers, in order to charge the batteries if and when access PV power is available. You did not mention if you want to run the servers off-grid (only from PV and batteries) or not, because if you want to run them off-grid, you might have to re-calculate everything, because then you might need much more batteries and more than 3000W of PV panels. Quote Link to comment Share on other sites More sharing options...
Chrisy Posted May 22, 2015 Author Share Posted May 22, 2015 superdiy Thanks for the detailed answer. I will make sure to get the PLUS model. I do not want to run off-grid at the moment. I will get to that over time. All I want for now is to run off the PV panels during the day, and run off Eskom at night. By having the batteries as well, I can then run off those when load shedding hits me in the evenings. The eight x 110Ah batteries should be enough for now. If not, then I will just add another four. Even if I can just run part of the day off solar, that is also fine with me. I just need a solution to the load shedding problem. I have a silent diesel generator I am using at the moment, but I absolutely hate the thing. Quote Link to comment Share on other sites More sharing options...
Vernon Newman Posted May 2, 2023 Share Posted May 2, 2023 Good Afternoon Please advise how many panels and size of panels I can install to a 3KVA MKS Plus Quote Link to comment Share on other sites More sharing options...
Vernon Newman Posted May 2, 2023 Share Posted May 2, 2023 Just now, Vernon Newman said: Good Afternoon Please advise how many panels and size of panels I can install to a 3KVA MKS Plus I have 4 x Atlas BX LDC 31M 100AH batteries as well. I am new to the solar thing, any assistance will be appreciated please. Quote Link to comment Share on other sites More sharing options...
Scorp007 Posted May 2, 2023 Share Posted May 2, 2023 (edited) 2 hours ago, Vernon Newman said: I have 4 x Atlas BX LDC 31M 100AH batteries as well. I am new to the solar thing, any assistance will be appreciated please. Try around 102V Vmp which is 2 in series. Can fit up to about 1650W maximum. If 600-650W panels only 2. Voc=145V and cannot be exceeded on a very cold day. If 330W then 4 panels. 2S2P. Another thing. Ensure you set your cut out at about 23.6-24.2V and not the default or the lowest value that the Atlas can be discharged now and again. For LS and regular cycling do not deep discharge them. I am sure you don't want to buy new batteries in 9 months time. Edited May 2, 2023 by Scorp007 zsde 1 Quote Link to comment Share on other sites More sharing options...
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