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    • 79. 发明授权
    • Electrical apparatus, in particular a surge arrestor, having an
apparatus for indicating a fault current
    • 具有用于指示故障电流的装置的电气装置,特别是电涌放电器
    • US6028759A
    • 2000-02-22
    • US186887
    • 1998-11-06
    • Werner HofbauerWalter Schmidt
    • Werner HofbauerWalter Schmidt
    • H01T1/12H02H3/22
    • H01T1/12
    • The electrical apparatus, which is designed in particular as a surge arrestor (3), has a dielectric housing (8) which can be loaded with high voltage as well as an apparatus for optical indication of a fault state caused by a fault current. The indicating apparatus is designed as an information carrier (9) which covers at least a portion of the outer surface of the dielectric housing (8). This information carrier (9) emits an optically detectable signal when heated to a limiting temperature which is above a permissible operating temperature of the apparatus. The information carrier (9) is advantageously designed as a thermocolor. A faulty apparatus can then be identified by the maintenance personnel for a system containing the electrical apparatus, in a simple and reliable manner by means of a color change.
    • 特别设计为浪涌抑制器(3)的电气设备具有能够承载高电压的绝缘壳体(8)以及用于由故障电流引起的故障状态的光学指示的装置。 指示装置被设计为覆盖电介质外壳(8)的外表面的至少一部分的信息载体(9)。 当信息载体(9)被加热到超过装置允许工作温度的极限温度时,该信息载体(9)发出可光学检测的信号。 信息载体(9)有利地设计为热色。 然后,可以通过颜色变化以简单和可靠的方式,由维护人员识别含有电气设备的系统的故障装置。