MorneS

Good day Gents, Everything has been running smoothly without any alarms or trips from the inverter. It's been smooth solar sailing. @Ross Muller Maybe you have some more info to share regarding why you asked the question? The MPPT Range is max. 800V. So this then means 595V should be safe. BUT then reading the maximum PV Input Voltage which is 1Kv as @P1000 has stated, won't the combined Voltage be more than the 1000V? Or is the 1kV rating per string as well?

Yeah I am stoked as well. We didn’t no. My theory is that the PV-1 strings run either or. Kind of like if you wanted to have 1x string in an eastern direction and another string west/north. Then inverter “chooses” which to use? At the end of the day we decided to run 1 string per MPPT. i got what I was aiming for.

This photo shows a bit more info regarding load on the different inputs and outputs. Solar sell was on at the time. Turned off since. As far as I was told we are not allowed to sell to grid just yet.

So, we moved the 8 x 3 strings to 12x2 strings yesterday. The difference was astronomical. Achieved around 11 kw on solar load from the panels. Voltages are way better.

Very detailed approach. Thank you for the reply. I will definitely do as you have said above. Try to do the fault finding. Will only be able to do it once the sun is out again. This week is a bit shy when it comes to proper sunlight.

Would disconnecting one of the parallel strings make a difference? e.g. give higher amps and watts? When you say Parallel. Does this mean the inverter "chooses" which string to use based on available output? Can you elaborate on that please?

Morning, No not yet. We are moving the strings for the current 8 panel 3 strings to 12 panels 2 strings on the 25th of October. Will give feedback once we have done this and see what.

Yeah you are right. PV1 and PV2 almost always have the same figures even though like you have mentioned, PV1 has two strings. I will get the guys to come and have a look again. Thank you for taking the time to comment Gents. Appreciate it.

Hi! see attached below. So this is with both geyser operating at the moment. one is about 4kw and the other 2kw. They are both on the same phase. 4.87kw is provided by the panels and 3.73kw is provided by the grid.

You are correct. The kitchen is on its own phase. What I will check is if the phase that the kitchen is on is the same phase that the geysers are on.

Here are screenshots from the mobile app. I will only be able to take physical pictures later when I get home. PV-1 as previously mentioned has the combined strings (16 panels). Pv-2 only has 1 string (8 panels).

Morning P1000, I will have a look at the phases. They were "balanced" by an electrician. BUT the two Geysers are on one phase. I will have a relook at this.

Morning Jaxone, Panel specs: Voc = 49.6, Isc(A) 13.86, Efficiency 20.9%. PV-1 and PV-2 is on about 360V respectively at the moment. My thinking is that PV-1 Should be more on the Voltage? It has 16 panels between the 2 combined strings on PV-1.

Good day all, Hope you guys can assist me. I have a question regarding the MPPT’s on this inverter. It’s specs say that it has 2+1 Strings. Namely PV-1 (this PV 1 has the +1 string) and PV-2(single string). Currently I have 24 x JA Solar 540w panels connected to all three the strings mentioned above. 8 panels per string. 3 x 8 = 24. This equals to roughly 12960w PV. So my question is this. Will PV-1 make use of all 16 panels connected to it via the 2 strings or how does it handle the two strings? What should I expect to get under good conditions? My panels are directly North facing and I live in Krugersdorp, Gauteng. I stress tested the system yesterday by turning on a few electrical appliances, toaster, microwave, Air fryer, pool pump was running as well. The load from the house was roughly 9Kw. The PV provided around max 6.8kw and the Grid the difference. This was during mid day. The angle of the roof I am not sure of. It’s a slate roof. I am expecting to get more out of the PV though. Or am I expecting too much? Any advice and opinions welcome.