| 摘要 |
PURPOSE:To reduce the area of mounting, to miniaturize the whole device and to simplify structure by using a resistance wire for a reactor coil. CONSTITUTION:A device has a reactor coil 1 formed to an air core coil and a vessel 2 into which the reactor coil is housed, insulating oil or an inert insulating gas is sealed into the vessel 2, and insulating bushings 3a, 3b are each mounted to the upper wall 2a and circumferential wall 2b of the vessel. A lead wire 4a drawn out of one end of the reactor coil 1 is lead out of the insulating bushing 3a fitted to the upper wall 2a of the vessel between them, and connected to the neutral point of a star high-tension side winding for a transformer. On the other hand, a lead wire 4b drawn out of the other end of the reactor coil 1 is lead out of the insulating bushing 3b mounted to the circumferential wall 2b of the vessel, and grounded to the ground. A coil winding for the reactor coil 1 is constituted while using a conductor having predetermined specific resistance, a resistance wire, as a blank, and a nonmagnetic metal, such as a copper-nickel alloy, a copper-aluminum alloy, etc. is employed as the material of the conductor. |
