Permissible voltage range of the DC link

If the voltage at the DC link undershoots the value of the peak line voltage of a phase against the ground potential, the connected inverters must be switched off. The parameters that are required for this are included in the parameter list which you receive within the scope of project planning.

Example for a three-phase power grid with an external line voltage of 400 V:

230 V × √2 × 1.15 = 373 V → Setting value 380 V

If it is necessary to operate the inverter below this voltage range, contact SEW-EURODRIVE Service.