JohanG Posted August 1, 2019 Share Posted August 1, 2019 I have a Axpert MKS Plus 3kVA 2400W 24V and Axpert MKS Plus 5kVA 5000W 48V and want to set them up as shown in the diagram Comments?? Quote Link to comment Share on other sites More sharing options...
Jaco De Jongh Posted August 1, 2019 Share Posted August 1, 2019 11 minutes ago, JohanG said: Comments?? May I ask what your thoughts is around this. Why would you need the second one? (the 24volt one) Will you then have a 48 Volt bank as well as a 24 Volt bank? Quote Link to comment Share on other sites More sharing options...
___ Posted August 1, 2019 Share Posted August 1, 2019 3 minutes ago, Jaco de Jongh said: May I ask what your thoughts is around this. Why would you need the second one? (the 24volt one) Will you then have a 48 Volt bank as well as a 24 Volt bank? Well, if you carefully control which one is in bypass and which one is not, you can run the (presumably lower power using) 24V one at night and switch to the other one during the day. It would be horribly inefficient to run one from the other (though you could do that to transfer charge from the 48V bank to the 24V one, should you need to). Assuming that this is the plan, the first thing to check is if the 24V model necessarily has a lower quiescent draw. I seem to remember that it's only a little less. Also, it would be interesting to see if the 24V unit will accept the AC generated by the 48V one. I've tied a 12V Multiplus downstream to a 24V one, and it worked fine. But that was in ESS mode. And it's a low frequency inverter, so a very different setup. Quote Link to comment Share on other sites More sharing options...
Riaanh Posted August 1, 2019 Share Posted August 1, 2019 11 minutes ago, plonkster said: Also, it would be interesting to see if the 24V unit will accept the AC generated by the 48V one. Yip it will work, the 3kVa will run on AC fed from the 5kVa, there are however a lot of assumptions here lacking in the drawing like batteries etc, but in a nutshell it will run. My thinking is maybe use the 5kVa to both power the 3kVa as well as some other "non essential" loads. The 3kVa running "essential" loads. So in the event of load shedding, the "non essentials" will run until the 5kVa switch off due to low battery, but in essence the 3kVa's load shedding will only start at that time. But as said assumptions, maybe the OP can clarify? Quote Link to comment Share on other sites More sharing options...
JohanG Posted August 1, 2019 Author Share Posted August 1, 2019 5 hours ago, Riaanh said: Yip it will work, the 3kVa will run on AC fed from the 5kVa, there are however a lot of assumptions here lacking in the drawing like batteries etc, but in a nutshell it will run. My thinking is maybe use the 5kVa to both power the 3kVa as well as some other "non essential" loads. The 3kVa running "essential" loads. So in the event of load shedding, the "non essentials" will run until the 5kVa switch off due to low battery, but in essence the 3kVa's load shedding will only start at that time. But as said assumptions, maybe the OP can clarify? This has precisely been my approach Riaanh 1 Quote Link to comment Share on other sites More sharing options...
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