| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a current transformer for measuring instrument that can improve radiation performance, without increasing the sizes of an upper radiation tank. SOLUTION: At the upper part of a container for accommodating a conductor wound around a core with insulating oil, an upper radiation tank 8 for radiating the heat of the insulating oil is installed. In the outer periphery of an upper radiation tank 9, both the ends of a number of oil-leading pipes are allowed to radially communicate for connection. As the oil-leading pipe, two kinds of the oil-leading pipes 9a and 9b, having different dimensions in height and radiation directions, are arranged alternately in the circumferential direction of the upper radiation tank 8. Each of the oil-leading pipes 9a and 9b is connected to the upper radiation tank 8 at the outer-periphery side of the upper radiation tank 8 via welded parts 10a and 10b.</p> |
