| 摘要 |
PURPOSE:To surely and easily detect the interlayer short-circuiting of a superconductive coil by judging that the interlayer short-circuiting of a coil has occurred when the value of inductance of a superconductor wound around the superconductive coil at normal temperature changes exceeding a certain value within a preset reference time. CONSTITUTION:A superconductive coil 1 is manufactured by withdrawing a superconductor 3 from a drum 2 for winding halfway during winding operation. A lead wire 4 for measurement is connected to both terminals of the conductor 3 and an inductance measuring instrument 5 and a sequential comparator 6 are connected. The measuring instrument 5 measures the inductance of the conductor 3 wound around the coil 1 at normal temperature. The comparator 6 obtains the change rate with time of the inductance measured by the measuring instrument 5, compares the rate with a preset change rate, and then judges whether the interlayer short-circuiting of the coil 1 occurs or not, thus positively detecting the interlayer short-circuiting of the coil 1 in real time. |
