What is the power consumption of Fimer PowerGain?
Having &quot;Multiple Max Scan Period - Value&quot; set at 30 seconds, I was astonished that &quot;within milliseconds scanning&quot; is clearly visible when measuring power generation even at 1 Hertz frequencies:

Note: around 16:35:30 &quot;Multiple Max Scan&quot; a.k.a. PowerGuard was disabled.
To calculate the power loss, the graph of one 5 second dip was used:

Power before scan: 21,65 kW
Power after scan: 21,45 kW
Average power estimate without scan: 21,55 kW
Actual measured power:

second 1: 18,55 kW
second 2: 19,17 kW
second 3: 18,88 kW
second 4: 16,45 kW
second 5: 19,81 kW

average: 92,87 ÷ 5 = 18,574 kW
Average loss during 5 seconds: 2,976 kW.
Total loss: 14,88 kWs = 4,1333 Wh every 40 seconds = 372 Wh per hour.
A guesstimate: 4,5 kWh per day for a day with a production around 260 kWh. Thus 1.7% power lost (or consumed) having PowerGuard enabled when there is no partial module shading.
PS Having string designs at the upper (voltage) limit may cause inverter E004 errors because PowerGain seems to temporarily put solar modules in Voc state. Disabling &quot;Multiple Max Scan&quot; may be able prevent this error E004. Having PowerGain disabled, E004 errors do occur.