Maximum DC link voltage

Problem

The DC link voltage is limited to a maximum of 680 V.

Remedy

If the DC link voltage cannot be increased further even though it is within the application limits and profile values, there might be a problem with the line voltage configuration. The nominal line voltage must be specified to reliably maintain the insulation distances.

The nominal line voltage (parameter "Line voltage monitoring – nominal line voltage") is configured in the configuration of the device in the "Monitoring functions" configuration menu in the submenu "Line control".

The nominal line voltage is set to at least 200 V and should be increased to the actual nominal line voltage. For the nominal line voltage (phase-to-phase voltage), refer to the information provided by the local grid operator.