... not affect normal power supplyApplication:In the frond part protection of the power system, install among the LPZ0, LPZ1, and LPZ2 ... , when the power grid line suffers the direct, indirect lightning stock or other instant overvoltage, in nanoseconds, the SPD ... state, bleed the instant energy into the earth, meanwhile, limits the overvoltage in a protection level. When the instant overvoltage disappear, ...