Patent ID: 8222778
Filing Date: 2012-07-17
Classification: H02K

Abstract:
1. A high-voltage bushing of a rotating electric machine, comprising: a hollow conductor penetrating an output terminal box of a rotating electric machine in which a cooling gas is sealed, and fetching an output of the rotating electric machine; an insulator tube provided outside the hollow conductor, and insulating the hollow conductor from the output terminal box; and a seal member preventing a cooling gas in the machine from leaking outside the machine from a jointed portion of the hollow conductor and the insulator tube, the cooling gas in the machine flowing to a machine external direction passing a clearance between the hollow conductor and the insulator tube, and the cooling gas flowing to the machine external direction being guided to an inner circumferential side of the hollow conductor passing a plurality of communicating holes formed in the hollow conductor, and further, the cooling gas guided to the inner circumferential side being guided to a machine internal side of the hollow conductor so that it is exhausted, and the communicating holes being inclined at least toward a circumferential direction of the hollow conductor or toward a machine external side from a direction vertical to a wall surface of the hollow conductor.