| 摘要 |
An improved power circuit breaker comprising a pair of electrodes which are to be broken in the case of accidental trouble ; a condenser ; an electromagnetic coil coupled electromagnetically with an electrode of said pair electrodes, opening of said electrodes being attained by discharging charged energy of said condenser into said electromagnetic coil ; and an electromagnetic wave generating device provided at a high potential part ; in which said electromagnetic wave is passed through interior of a support insulator, and electric energy necessary for operating said electromagnetic wave generating device is supplied from a power source for charging said condenser, whereby an electromagnetic wave corresponding to line current is produced at a high potential part and said wave is converted to an electric signal by means of a receiver provided at an earth potential part, thus introducing said signal to various control devices.
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