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Help CenterHousehoidLightning Surge Protector (LSP)lndustrial Lightning Protection Surge Protector (LPSP)
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The working principle of a surge protector is that when a transient voltage appears on the protected circuit, the Surge Protective Device (SPD) will limit the transient voltage and divert the current back to its source or to ground. An SPD must have at least one nonlinear component that switches between high-impedance and low-impedance states under different conditions. Under normal operating voltage, the SPD is in a high-impedance state and does not affect the system. When a transient voltage occurs on the circuit, the SPD enters a conducting state (or low-impedance state) and diverts the surge current back to its source or to ground. This limits or clamps the voltage to a safer level. After the transient is diverted, the SPD automatically resets to its high-impedance state.
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