| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a current transformer, wherein a leakage flux which passes through a core is reduced to improve the error characteristics of the core and at the same time, facilitates the manufacture of the core. SOLUTION: Torus-shaped cores 14 are arranged in a state that they are made to interlock with reciprocating conductor parts 13b2 and 13b2 ' of a folding- back part 13b of a hairpin-shaped primary conductor 13, and secondary coils 15 are wound on the cores 14. Only one void part G is provided in the middle of a magnetic path of each core 14 and this void part G is made to position on the inner side of the part 13b of the conductor 13. The void parts G of the core are arranged extending along the plane including the center axes of the parts 13b2 and 13b2 ' of the part 13b.</p> |
