| 摘要 |
PURPOSE:To make it possible to obtain compact configuration and to save the amount of insulating gas by providing the transformer wherein three phases are combined under the lower part of a three phase connecting pipe and providing the current transformer which measures a currents in three phase bus lines wherein the currents flow in the two phase lines at the part other than the lower part. CONSTITUTION:Two current transforming elements CTu and CTw are enclosed in a same container 21 at the upper part of the three phase connecting pipe 1. The current transformer 2 which measures the currents flowing through two phase lines U and W of the three phase bus lines U, V, and W is provided. The transformer, wherein three transformer elements PTu, PTv, and PTw are enclosed in a same container 31 and three phases are combined, is provided under the lower part. The connection of a primary coil 23 and the bus lines U and W is made by dual conductors 4h and 4e which pierce through a spacer 5, and the connection between a primary coil 33 and the bus lines U, V, and W is made by conductors 4u, 4v, which pierce through a spacer 6. Since the conductor 4v does not pierce through the container 21 of the current transformer 2, the diameter of the container can be reduced, and the amount of the insulating gas sealed in the container 21 can be saved. |
