| 摘要 |
PURPOSE:To obtain a single phase autotransformer with small-sized tertiary coil without varying via a tap for the tertiary voltage and tapped coil connected in series at the neutral point side of a shunting coil by winding an exciting coil connected at both ends with the neutral voltage line terminal and a neutral point and the tertiary coil at one core leg. CONSTITUTION:A single phase autotransformer is composed of a series coil 10, a shunt coil 20, a tertiary coil 30, a tapped coil 40 and an exciting coil 50. Thus, the coil 40 is connected in series with the neutral point side of the coil 20 to vary the voltage of the high voltage line terminal U. The coil 30 and its both ends are connected to the middle voltage line terminal u and the neutral point to be excited by the coil 50. Reference character v is a neutral point terminal, and a, b are tertiary terminals. In this manner, it can eliminate the series transformer and a trnasformer which does not vary and tertiary voltage with the tapped position can be obtained. |
