1 string producing a lot more power than the other string

[user 37909]

1 string producing a lot more power than the other string​

Is this normal for 1 string to produce a lot more power than the other, on an east/west setup? String 2 always seems to be lower than string 1, no matter the time of day, especially by the afternoon, the difference becomes huge.

The inverter is a sunsynk 5kwh ecco model. 4 * 430 watt panels on each string.

 

[newfutile]

I would expect the west string to produce more,but check for shading if you don't have optimisers fitted

 

[Andy™]

roof probably isn't exactly east-west either so one side will be slightly north facing compared to the other

 

[binky]

So I'm guessing the yellow line is the West array, in which case the east array really isn't getting going. Something definetly isn't right if it is E / W roof. Your outputs look more like NE SW.

 

[bladerunnerpv]

1 what was the weather doing that morning? Is the data for a sunny day?
2 If that's the sg04-lp1 5kw inverter then the startup voltage in the datasheet is 125V, what's the Voc for the panels?

 

[michael8554]

Sunrise and sunset compass points vary throughout the year.
Today in Wiltshire the sun rose near NE, and will set near SW, never reaching west.
So the east string should produce more today, clouds allowing !