| 摘要 |
PROBLEM TO BE SOLVED: To provide a decoupling device for a lightning protective device that can simply and properly harmonize current withstand capacity between the first and second lightning protective devices, while suppressing a voltage drop during normal operation. SOLUTION: The decoupling device 15 is connected in series to a power line 11 between the first and second lightning devices 12, 13 connected in parallel to each other between the power line, which is led in from outside and supplies electric power to an electrical apparatus installed indoor, and ground G. In this decoupling device 15, a first element portion 16 having two diodes D1, D2 connected in series, a second element portion 17 having two diode D3, D4 connected in series, and a third element portion 18 made of a reactor L are connected in parallel to each other. The input side between the two diodes D1, D2 of the first element portion 16 and the output side between the two diodes D3, D4 of the second element portion 17 are connected to the power line 11. COPYRIGHT: (C)2007,JPO&INPIT
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