February 26, 20233 yr Hi, Im seeking some advise on expanding my solar array. I currently have 6 x Canadian Solar 445W (Imp = 10.89A) in a single string on MTTP1. I am looking to add an additional 6 panels on either MTTP, but when looking at the larger wattage panels (>500w), some brands appear to have an Imp higher than the MPPT on my Inverter which according to the data sheet has a PV input current of 11A per MTTP. (Sunsynk model = Sunsynk-5K-SG01LP1) Examples below. Using these two brands because I have mostly heard good things and my existing Canadian solar panels perform very well. Happy for recommendations on other brands. Canadian Solar - 520watt to 550watt - Imp ranges from 12.84A to 13.2A JA Solar - 525watt to 550watt - Imp ranges from 10.35A to 10.55A Am I therefore limited to which brand I take due to these values or am I using the wrong thing to calculate the limitations of my Inverter? should I only look at VoC? On a separate contrivercial subject I plan to add an additional Pylontech battery to the system, I have 2 X Pylontech US3000C, should I remain with this model or can I add a UP5000, price wise it seems the better option. I know there are a lot of comments to not do it, and others that state just make the UP5000 the master. Any advise? Thanks in advance for any feedback.
February 26, 20233 yr 20 minutes ago, QuentinF said: Am I therefore limited to which brand I take due to these values or am I using the wrong thing to calculate the limitations of my Inverter? should I only look at VoC? you should probably go for the JA Solar to be within range/spec, you could probably get the Canadian Solar, but you will never get close to getting best bang for buck, the inverter should limit how much current it will allow to come into the MPPT and thus all should be ok, but you will waste some power as you will not be able to get maximum current out of the panels... as for the JA Solar panels, at 10-odd Ampere, they should be perfect... as for the battery, I don't know the Pylontech, so I won't suggest anything... Edited February 26, 20233 yr by Kalahari Meerkat speeling
February 26, 20233 yr Author Hi Kalahari Meerkat and ChrisDied, Thank you for the feedback. This has helped a lot.
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