| 摘要 |
An electrode assembly (22) for a vacuum interrupter (10) is disclosed having a coil structure that produces an axial magnetic field during operation of the assembly. The electrode coil includes at least one arcuate arm (50, 51) having a radial cross section which provides more material adjacent to a base (42) of the coil than adjacent to a contact plate (70) of the assembly (22). In a preferred embodiment, the cross sectional area of the arcuate arm (50, 51) has a trapezoidal shape. The electrode assembly (22) provides improved heat transfer during operation of the vacuum interrupter (10) while maintaining a sufficient axial magnetic field. As a result, the electrode assembly (22) may be operated at higher continuous currents than conventional designs. <IMAGE> |
