| 摘要 |
Connection arrangements for reducing the effect of third-harmonic voltages in case of direct connection of AC machines (1) to a three-phase distribution or transmission network (5), wherein the stator winding of the AC machine is Y-connected and wherein the neutral point of the winding (2) is available, comprising a suppression filter (14) tuned to the third harmonic, with an overvoltage protection device (17) arranged between the neutral point (2) and ground of the power network (4).
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