Electrical network having fault protection control

An electrical network having feed-in devices, loads and a distribution network, which is arranged therebetween and has at least one busbar and at least one apparatus for opening or closing a DC circuit, wherein the at least one apparatus comprises:

• an electrical switch to open or close the DC circuit;
• a fault current detection device;
• a tripping unit;
• a pre-charging apparatus;
• and
• a control unit to automatically close the electrical switch after pre-charging, wherein
• in response to detection of a fault current by the fault current detection device, the electrical switch is configured to open the DC circuit via the tripping unit, and the pre-charging apparatus is configured to restore a voltage on the at least one busbar before the electrical switch is closed,
• each of a plurality of the loads is configured to be electrically disconnected individually via an electromechanical switch, and
• the plurality of the loads are configured to be electrically disconnected as a group via the at least one apparatus, wherein the pre-charging apparatus is configured to interrupt a pre-charging operation in response to no rise in the voltage on the at least one busbar, which indicates that a fault still exists.

An electrical network having feed-in devices, loads and a distribution network, which is arranged therebetween and has at least one busbar and at least one apparatus for opening or closing a DC circuit, wherein the at least one apparatus comprises:

• an electrical switch to open or close the DC circuit;
• a fault current detection device;
• a tripping unit;
• a pre-charging apparatus;
• and
• a control unit to automatically close the electrical switch after pre-charging, wherein
• in response to detection of a fault current by the fault current detection device, the electrical switch is configured to open the DC circuit via the tripping unit, and the pre-charging apparatus is configured to restore a voltage on the at least one busbar before the electrical switch is closed,
• each of a plurality of the loads is configured to be electrically disconnected individually via an electromechanical switch, and
• the plurality of the loads are configured to be electrically disconnected as a group via the at least one apparatus, wherein the pre-charging apparatus is configured to restore the voltage on the at least one busbar after a first waiting time and wherein the control unit is configured to automatically close said electrical switch after a second waiting time.