ND.. line chokes

The ND.. line chokes can be used optionally:

  • To support overvoltage protection
  • To smoothen the line current, to reduce harmonics
  • For protection in the event of distorted line voltage
  • To limit the charging current when several inverters are connected together in parallel on the input end with a shared line contactor (nominal current of line choke = total of inverter currents)

For 5 or more 3-phase units, connect a line choke to limit the inrush current.