| 摘要 |
<p>PURPOSE:To enable changing the current capacity of a primary conductor with one sort of current transformer by enabling to make many current capacities flow reducing number of plural turns short-circuiting the connecting part of each turn forming the primary conductor with plural turns. CONSTITUTION:Penetrating type mold current transformers 1A, 1B are formed with a ring iron core 2 wound with a secondary ire 3 and the ring iron core 2 and the secondary winding 3 are covered with an insulating layer 4 and are inserted in an insulation ring 5. The insulation ring 5 is made of a pair of insulation ring pieces 6, 7, four primary conductors 8A, 9A-8D, 9D are provided within the insulation ring pieces 6, 7 and these primary conductors 8, 9 are covered with an insulation material. A hole 10A is provided on both the ends of the primary conductors 8, 9, a connecting part 10 which can be removed freely is provided and lead terminals 11A, 11B are connected to the connecting part 10 of both the ends. In this way, only changing the positions of the connecting part 10 and a short-circuit piece 12 enables to change the current capacity of the primary conductors 8, 9 and the positioning works are easy and require not a long time.</p> |
