| 摘要 |
<p>PROBLEM TO BE SOLVED: To fit or remove a measured conductor during energization by dividing a winding frame into two winding frame sections in the peripheral direction, connecting one-end sections in the peripheral direction with a hinge, and forming an opening section at the other ends. SOLUTION: A winding frame 3 is divided into two winding frame sections 3A, 3B, and one-end faces 3C of both winding frame sections 3A, 3B are formed into the linear shape and connected together via a hinge 11. The other split faces 3D of the winding frame sections 3A, 3B are formed into a Z-shape to be butted together, and the split faces 3D are opened in the peripheral direction by the hinge 11 to form an opening section 12 so that a measured conductor 1 can be inserted into it. The measured conductor 1 being energized can be fitted or removed to or from the winding frame 3, and a flowing current I can be measured. The measured conductor 1 is not required to be interrupted for current measurement, a light current transformer can be moved in a hot line, and the work efficiency of current measurement is improved.</p> |
