Permitted voltage supply systems

  • Voltage supply systems with grounded star point
  • Inverters with all degrees of protection are intended for operation on TN and TT systems with directly grounded star point.
  • Voltage supply systems with non-grounded star point
  • The following inverters can be used on supply systems with a non-grounded star point (e.g. IT systems) after a corresponding conversion (see chapter Operation on an IT system):
  • Voltage supply systems with grounded outer conductor
  • The inverters with all degrees of protection may be operated only on supply systems with a maximum phase-to-ground AC voltage of 300 V.