| 摘要 |
PURPOSE: To realize cost-down by reducing the number of expensive resonance reactors and dielectric strength. CONSTITUTION: In a filter apparatus providing two circuits of single phase AC filter in the secondary circuit of a transformer 1 having a single phase 3-wire type circuit, a resonance reactor 2 shared by two circuits of single phase AC filter F is provided in the neutral point side of the single phase 3-wire type circuit and respective capacitors 3a, 3b forming two single phase AC filters are connected to this resonance reactor 2. |
