| 摘要 |
PURPOSE:To enable to perform series-parallel switchable connection without making an erroneous connection and unnecessitating the providing of a switching bar using one kind of switching bar by a method wherein the outer terminal of a bushing is formed into L-shape and arranged in such a manner that the junction surfaces of the external terminal and the bushing will be brought to equidistance and the similar arrangement. CONSTITUTION:An L-shaped outer terminal 7 is provided at the tip of a bushing. At this time, the vertical part of the outer terminal 7 is provided at the point shifted from the center position of the bushing as the junction face of a switching bar. After the above-mentioned outer terminal 7 has been attached to each bushing, the bushings are arranged in such a manner that the vertical parts of them will make right angle with each other. Each outer terminal 7 is arranged in such a manner that the distance between terminals 7a and 7c, 7b and 7d, and 7c and 7b and the angle of arrangment are formed equal, but the distance between terminals 7a and 7d is to be made wider than the others. After the outer terminal 7 of each bushing has been arranged as above, the switchable connection of a transformer winding is performed using one kind of L- shaped switching bar 8 only whereon an oval hole is provided at both end parts. To be more precise, in the case of parallel connection, terminals 7a and 7c, and terminals 7b and 7d are connected using said switching bar 8. |
