Problem

Inverter controlled equipment stops when detecting a fault in the commercial power supply.

Messung

The following items should be measured simultaneously:

• Spannungsschwankungen – The output voltage fluctuates regardless of the demand caused by the wind speed difference.
• Frequency fluctuation
• Transiente Überspannung, Wellenformverzerrung – Generated by lightning strikes and grid switching
• Einschaltstrom
• Harmonik
• High-Harmonischen
• Flimmern

Quelle : Ratgeber für Power Quality Measurement, HIOKI E.E. Gesellschaft