Leakage current interrupting apparatus专利检索-线路跳闸分销网络和设备专利检索查询-专利查询网

Leakage current interrupting apparatus

阅读：565发布：2022-08-14

专利汇可以提供Leakage current interrupting apparatus专利检索，专利查询，专利分析的服务。并且In a leakage current interrupting apparatus for feeder lines a zero-phase current transformer is associated with the feeder lines to trip a circuit interrupter through a control means responsive to the secondary voltage of the zero-phase current transformer. The control means is comprised by a magnetic reed relay or a unidirectional three-terminal element such as a silicon controlled rectifier element.，下面是Leakage current interrupting apparatus专利的具体信息内容。

权利要求

1. Leakage current interrupting apparatus for a load energized by a source of electrical power supply, comprising feeder lines connected between the source of supply and the load; a trip coil having main contacts connected in the feeder lines for opening the feeder lines, said trip coil controlling the positions of the main contacts; a zero-phase current transformer having a toroidal core having a window surrounding the feeder lines and a secondary winding on the core for producing an output voltage when a leakage current flows through the feeder lines; a first magnetic reed switch connected in series with the trip coil between one end of the trip coil and one of the feeder lines for controlling the energization of said trip coil to control the position of the main contact; audible alarm means; a second magnetic reed switch connected in series with the audible alarm means for controlling the energization of the alarm means to provide an audible alarm, the second reed switch having a greater sensitivity than the first reed switch; and an exciting coil connected in series with the secondary winding of the transformer and positioned in operative proximity with the first reed switch for producing a magnetic flux for controlling the operation of said first reed switch thereby controlling the operation of the trip coil and for controlling the operation of the second reed switch to produce an audible alarm.

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