After running my mini split A/C on solar for the past 2 years I've decided it's time to expand my system. After watching Mr. Prowse video on the advantages of the all in one units I thought that would be the way to go, but I seem to have run into some problems, or I'm asking too much, not sure which.
I have the roof space to install two long strings of twelve 250 watt panels giving me about a 6Kw system. Southern New Mexico sunshine, 6.5 hours a day, south facing roof at almost the perfect angle and nothing anywhere near to shade them. As this will be more than enough to power my whole house I plan to give this a try later on.
The advantage that the utility company has is that if/when out power goes down I just have to call them, and they fix it within a few hours. If I am off grid I'm out of luck until I can fix it myself which, if I need parts can take days or weeks. So as a precaution I plan to run 2 independent systems each feeding into their own breaker box, so if one system quits I still have power, albeit reduced.
Looking at some of the all in one units on ebay, I found that a few will accept a PV Voc maximum of 500 volts. As the Voc of my panels is 37V, a 12 panel series string would be 440V, so this looked promising, but all the units I've looked at with a high Voc input only output 240 volts single phase.
Can any forum members point me at an all in one unit, MPPT with a Voc max input of about 450 - 500 volts, with either a 240 split phase or 120 volt single phase 3Kw output.
I'm using a 48 volt battery bank, which at the moment is SLA, but when they quit I may move over to lithium.
I have the roof space to install two long strings of twelve 250 watt panels giving me about a 6Kw system. Southern New Mexico sunshine, 6.5 hours a day, south facing roof at almost the perfect angle and nothing anywhere near to shade them. As this will be more than enough to power my whole house I plan to give this a try later on.
The advantage that the utility company has is that if/when out power goes down I just have to call them, and they fix it within a few hours. If I am off grid I'm out of luck until I can fix it myself which, if I need parts can take days or weeks. So as a precaution I plan to run 2 independent systems each feeding into their own breaker box, so if one system quits I still have power, albeit reduced.
Looking at some of the all in one units on ebay, I found that a few will accept a PV Voc maximum of 500 volts. As the Voc of my panels is 37V, a 12 panel series string would be 440V, so this looked promising, but all the units I've looked at with a high Voc input only output 240 volts single phase.
Can any forum members point me at an all in one unit, MPPT with a Voc max input of about 450 - 500 volts, with either a 240 split phase or 120 volt single phase 3Kw output.
I'm using a 48 volt battery bank, which at the moment is SLA, but when they quit I may move over to lithium.