Checking of Active Power adjustment upon external command from DistributorChecking of constructional requirements reactive power capabilityAutomatic supply of reactive power according to a characteristic curve cos φ = f (P)EMC requirements (current harmonic, voltage flicker)Automatic limitation the active power for voltage value close to 110% of the nominal voltageChecking of the presence of over-frequency transient networkChecking of underfrequency transients on the transmission networkOutput of DC component in the output current