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    • 3. 发明授权
    • Secondary surge arrester with isolating and indicating features
    • 二次避雷器具有隔离和指示功能
    • US5502612A
    • 1996-03-26
    • US193227
    • 1994-02-07
    • Joseph C. OsterhoutSteven P. HensleyAlex DemetzenskyHoward E. Swanson
    • Joseph C. OsterhoutSteven P. HensleyAlex DemetzenskyHoward E. Swanson
    • H01C7/12H02H7/04
    • H01C7/12
    • A secondary surge arrester has a line conductor and a ground conductor extending through a casing. A nonlinear voltage dependent resistive element and a fault current limiting fuse are connected between the conductors and are disposed within the casing. The fault current limiting fuse includes a fusible material surrounded by sand. The sand also surrounds the nonlinear voltage dependent resistive element. A heat sensitive material is disposed in close proximity to the fusible material and is viewable through a transparent cover. In the event of a failure of the nonlinear voltage dependent resistive element causing arcing, the fusible material fuses to open the current path between the conductors, and the sand absorbs energy by transforming state. Thus, the fault current limiting fuse limits current flow through the surge arrester and extinguishes the arc within the surge arrester so as to prevent violent fragmentation of the casing. Furthermore, the heat sensitive material changes in response to heat generated during failure of the nonlinear voltage dependent resistive element to indicate the operability of the secondary surge arrester.
    • 二次避雷器具有线路导体和延伸穿过壳体的接地导体。 导体之间连接非线性电压依赖电阻元件和故障限流保险丝,并设置在外壳内。 故障限流保险丝包括由沙包围的易熔材料。 砂也围绕非线性电压依赖电阻元件。 热敏材料设置在靠近可熔材料的位置,并可通过透明盖子观看。 在引起电弧的非线性电压依赖电阻元件发生故障的情况下,可熔材料熔断以打开导体之间的电流路径,并且砂通过转换状态吸收能量。 因此,故障限流熔断器限制电流流过避雷器并消除电涌放电器内的电弧,以防止外壳剧烈断裂。 此外,热敏材料响应于非线性电压相关电阻元件的故障期间产生的热而改变,以指示二次电涌放电器的可操作性。
    • 4. 发明授权
    • Spark gap assembly for voltage surge arresters
    • 电压避雷器的火花隙组件
    • US4065692A
    • 1977-12-27
    • US661593
    • 1976-02-26
    • Joseph C. Osterhout
    • Joseph C. Osterhout
    • H01T2/02H01T4/16H01J17/00H01J21/00
    • H01T4/16
    • A spark gap assembly of a stack of insulating plates which have on one surface thereof a pair of electrodes preassembled and affixed thereto with a defined spark gap therebetween and a piece of ionizing material disposed on and affixed to each of the plates between the pair of electrodes. The plates are stacked with mating surfaces joined together and with a center plate bearing no electrodes that is joined with mating surfaces of each of two symmetrical groups of electrode bearing plates, and an electromagnetic coil is disposed around the periphery of the center plate.
    • 绝缘板堆叠的火花隙组件,其一个表面上具有预先组装并固定到其上的一对电极,其间具有限定的火花隙,并且一片离子化材料设置在每一个电极上并固定在该对电极之间的每个板上 。 这些板堆叠成具有接合在一起的配合表面,并且具有不具有与两个对称组的电极轴承板的配合表面接合的电极的中心板,并且电磁线圈设置在中心板的周边周围。