| 摘要 |
PURPOSE:To reduce the magnitude and imbalance of the overall burden impedance of secondary winding by completely removing external connection line resposible for imbalance and occupying the greater part of the burden of secondary circuit by making the secondary winding of current transformer a closed circuit. CONSTITUTION:The through type current transformer 11 consists of the secondary winding 12 and the third winding 13 together wound around a ring core, in which the secondary winding 12 is connected to a closed circuit without terminal, the third winding 13 is provided with the terminals 13a and 13b, and the outside is provided with the insulator 13 by a mold formation. Thus, external connection line which is responsible for imbalance and occupies the greater part of the secondary circuit burden can be removed completely, and therefore the magnitude and imbalance of secondary circuit overall burden can be reduced. |
