| 摘要 |
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.
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