| 摘要 |
PROBLEM TO BE SOLVED: To break and open a cable way by sending a signal of a pseudo- leakage generator to an existing circuit breaker by sensing an earthquake by a seismograph when it reaches a certain seismic intensity after an earthquake occurs. SOLUTION: A pseudo-leakage generator 2 is connected to an electric contact point of a seismograph 1, and a leakage current is made to flow to an existing earth leakage breaker 3. Here, it is connected between a power source side neutral point and a load side charging line so that the leakage current is automatically broken when the existing earth leakage breaker 3 operates. When the seismograph 1 operates by an earthquake, since a pseudo-leakage current flows to the earth leakage breaker 3, the existing earth leakage breaker 3 is tripped, and a cable way is broken. Therefore, a fire caused by a collapsed house and an electric equipment such as a damaged and overturned electric appliance can be prevented. |
