Abstract: An AC switching arrangement is provided with an energy transfer arrangement connected in parallel with a switching mechanism. The energy transfer arrangement comprises a capacitance arrangement and a diode arrangement. The switching mechanism normally closed in a first state, and on reception of a signal indicating the second state, the switching mechanism is arranged to open. When the switching mechanism is in the second state, the diode arrangement is arranged in each AC half cycle to enable energy (source energy, stored inductance energy, etc.) to transfer from the grid to the capacitance arrangement but to prevent energy transfer from the capacitance arrangement back to the grid.

Abstract: An AC switching arrangement is provided with an energy transfer arrangement connected in parallel with a switching mechanism. The energy transfer arrangement comprises a capacitance arrangement and a diode arrangement. The switching mechanism normally closed in a first state, and on reception of a signal indicating the second state, the switching mechanism is arranged to open. When the switching mechanism is in the second state, the diode arrangement is arranged in each AC half cycle to enable energy (source energy, stored inductance energy, etc.) to transfer from the grid to the capacitance arrangement but to prevent energy transfer from the capacitance arrangement back to the grid.

Abstract: The present invention provides a fault current limiter apparatus comprising: a fault current limiter including: a magnetically saturable core, at least one AC coil wound on at least a portion of the magnetically saturable core, and a magnetic biasing arrangement for magnetically biasing at least a portion of the magnetically saturable core; a source terminal for electrically connecting the fault current limiter to a power source, and a load terminal for electrically connecting the fault current limiter to a load, wherein the at least one AC coil of the fault current limiter is electrically connected between the source and load terminals, and wherein the fault current limiter has a first inductance in normal conditions and a second inductance in fault conditions; a first capacitance electrically connected between the source and load terminals, wherein the first capacitance is electrically connected in series with the fault current limiter, and wherein the first capacitance has a capacitance that is arranged to

Abstract: A fault current limiter is provided that comprises a fault current limiter comprising first, second and third magnetically saturable cores.