I am looking at replacing an Axpert (Voltex MKS 5kVA) with a Sunsynk 5kw inverter that can do blending.
I currently have 4kw PV array consisting of 10x400w Panels (41.6V by 9.6A with OC 49.1V)
For the Axpert I user 5 String of two panels each as PV input for the Axpert with min PV in 40V and Max is 115V, and 80A max, that gives my axpert a theoretical input for my setup of 82.4V and 48A as input.
The Sunsync has two MPPT’s, with Startup 150V, and operating volts as 125-425V with max 500V
At this stage I do not want to purchase additional panels or climb on roof and rewire the strings and would like advice or views on, just wiring all strings in series (doing this at the PV combiner box) giving me a setup of 416V with Open circuit max of 491V.
This is however still in limits of the Sunsync but very close to the operating and Max volts of the Sunsync.
Any viewpoint why I should not do this as first interim choise
If the above is not recommended I can bite the bullet and climb on the roof and potentially rewire to two strings of 5 panels each and connecting one string to each of the MPPT’s giving me input of 208V per string.
Currently all panels same angle and minimal shading very early in morning (bottoms 2 panels) or very late in afternoon (left 5 panels)