THUNDER PROTECTION APPARATUS AND THUNDER PROTECTION METHOD

Abstract: a lightning protection device for protecting a dc power supply device from a lightning surge current includes: a positive-electrode-side lightning arrester connected between a positive-electrode-side power cable of the dc power supply device and a ground point; and a negative-electrode-side lightning arrester connected between a negative-electrode-side power cable of the dc power supply device and the ground point, in which a difference in operating voltage between the positive-electrode-side lightning arrester and the negative-electrode-side lightning arrester is equal to or more than a reference value.

Inventor(s): Naomichi NAKAMURA, Naoki HANAOKA, Yuji HIGUCHI, Toru TANAKA

CPC Classification: H01C7/12 (Overvoltage protection resistors {(series resistors structurally associated with spark gaps )})

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