| 摘要 |
PURPOSE:To provide resin molded coils and their manufacturing method which makes it possible to reduce the number of blocks by sealing an insulating gas into void in conductor and hardening the injected resin. CONSTITUTION:A coil 4a provided with a wound conductor 2 and an insulating paper 3 that is inserted among the conductor layers and a sealing tube 7 that seals an insulating gas at 10-760Torr supplied from outside is molded with resin to form a resin molded coil. After resin injection into the coil 4a set in a metallic mold 8 is finished, an insulating gas at 10-760Torr is sealed from the sealing tube 7 by an outside cylinder, etc. After the sealing, the sealing tube 7 is closed with a plug 9 so as to prevent leakage of the insulating gas to outside. After this the resin is hardened. For the insulating gas SF6 or flon gas is used. The sealing tube 7 is formed by a pipe 7a that is made by forming a void in part of the conductor, and it is taken to outside through the terminal 10 of the resin molded coil connected to the metallic mold 8, and the opening in outside is provided with a plug. |
