Patent ID: 6900971

Claim:
A low and/or medium-voltage DC power distribution network, the network comprising: a DC power distribution line which distributes low and/or medium voltage suitable to supply an electrical load; a tripping unit arranged along said DC power distribution line in order to interrupt said DC power distribution line responsive to a tripping signal; an electronic protection unit which sends one or more tripping signals to said tripping unit; and a power supply device being which is electrically connected to said DC power distribution line and to said electronic protection; said power supply device comprising: sensor means for providing sensing signals indicative of physical quantities related to said DC power distribution line; and a control unit, which receives said sensing signals and which provides, based on said sensing signals, command signals to the tripping unit arranged alone said DC power distribution line, wherein the control unit comprises: first electronic means suitable to transduce energy from said DC power distribution line while in a nominal operating condition; and second electronic means suitable to transduce energy from said DC power distribution line while in a transient current operating condition, said second electronic means taking over operation from said first electronic means during the transient current operating condition.