Abstract: A line filter has a filter unit, which has an input and an output and also a current-compensated choke and a capacitance network. The choke has several phase windings on a common core. Each phase winding is connected in series with a phase conductor. The capacitance network has capacitors, which are each connected between a phase conductor and a neutral conductor. Another choke is provided in series to the neutral conductor, which is wound separately from the core.

Abstract: The invention is directed to a network filter that comprises at least one phase input and a protective conductor in which each phase input is connected via a filter inductance to a corresponding phase output, in which the input side of each filter inductance is connected to the protective conductor via a filter capacitor, and in which an auxiliary inductance is connected between each filter capacitor and the protective conductor, permitting the inductances in the filter to be kept small, potentially realized by simply slipping a ferrite core over a conductor.

Abstract: A line filter has a filter unit, which has an input and an output and also a current-compensated choke and a capacitance network. The choke has several phase windings on a common core. Each phase winding is connected in series with a phase conductor. The capacitance network has capacitors, which are each connected between a phase conductor and a neutral conductor. Another choke is provided in series to the neutral conductor, which is wound separately from the core.

Abstract: The invention is directed to a network filter that comprises at least one phase input (L1, L2, L3) and a protective conductor (1), whereby each phase input (L1, L2, L3) is connected via a filter inductance (2) to a corresponding phase output (A1, A2, A3), whereby the input side of each filter inductance (2) is connected to the protective conductor (1) via a filter capacitor (3), and whereby an auxiliary inductance (7) is circuited between each filter capacitor (3) and the protective conductor (1). What the auxiliary inductance (7) achieves is that the inductances in the filter can be kept small, as a result whereof they can be realized by simply slipping a ferrite core on over a conductor.