Selecting the line filter

A line filter is optional and reduces the interference emission generated by the inverter via the supply system cable. Its main purpose is to comply with the limit values for the interference voltage in the frequency range from 150 kHz to 30 MHz at the line connection. In addition, the line filter dampens the interferences from the supply system affecting the inverter. When selecting the line filter, its nominal current must be greater than the sum of the nominal input currents of the connected inverters.