| 摘要 |
PURPOSE:To secure an electric insulating distance without employing insulating bodies in respective grooves, which are provided with a large thickness, by a method wherein at least two places among connecting surfaces between the connecting wire or the lead wires of a superconducting field coil and the insulating bodies in respective grooves are connected by connecting parts having L-shape sections. CONSTITUTION:A coil mounting shaft 2 is provided with a groove 20 for inserting the connecting wires 16 of a superconducting field coil. An insulating body in the groove 20 for connection is divided into four parts of an upper projected insulating body 21 in a groove, a projected lower insulating body 22 in the groove and rectangular side insulating bodies 23 in the groove, which are opposing to respective sides of the connecting wire 16. The insulating bodies 21, 22, 23 are connected to the connecting wire 16 so as to have L-shape sections at the four corners of the connecting wire 16. According to such a constitution, a substantial electric insulating distance between the mounting part 2 and the connecting wire 16 may be measured by a distance along the surfaces of the L-shape section, therefore, the electric insulating distance may be secured sufficiently without increasing the thickness of respective insulating bodies 21, 22, 23 in the groove. |
