| 摘要 |
A surge protective device is provided to improve measuring accuracy of a surge having high energy by using a surge detecting part. A surge detecting part(100) detects a surge by converting high energy flowing to a power supply path line into low energy through a low power sensing. The surge detecting part includes a ferrite, magnetic material, and an air core. The ferrite and the magnetic material include air gaps of a different size. An A/D conversion part(200) converts the surge into a digital signal. A central processing part(300) applies the digital signal to predetermined program. The central processing part stores, displays, or transmits an output data outputted through the program according to situation.
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