Patent ID: 8279571
Filing Date: 2012-10-02
Classification: H03K

Abstract:
1. An electrical power switching system comprising: power input and power output; a switch for switching an energy pulse originating from a DC power supply from the power input side to the power output side, wherein said switch is electronically controllable at turn-on and turn-off for switching said energy pulse so that said switch is turned-on to start the pulse and turned-off to terminate the pulse; and a transmission line, connected between the switch and the power output side, for transmitting said energy pulse with a delay to ensure that the switch will be off before a short-circuit load fault current from a short circuit over the load reaches the switch, thus enabling protection of the switch from a short-circuit load fault current, wherein said transmission line is an inductor-capacitor (LC) based transmission line comprising a number of LC sections, where L is the inductance per section and C is the capacitance per section, and said LC based transmission line is configured with a delay larger than the turn-off delay of the switch.