Working principle of power lightning arrester
Power lightning arrester is generally connected in parallel between the power line and the load. When overvoltage occurs on the power line, the power lightning arrester will divert or limit it to protect the load equipment.
The working process of power lightning arrester can be divided into the following stages:
Normal working stage: The power lightning arrester is in a high impedance state, which does not affect the normal operation of the power line and load.
Trigger stage: When overvoltage occurs on the power line, the impedance of the power lightning arrester will decrease and begin to conduct, forming a low impedance path to divert or limit the overvoltage.
Protection stage: The power lightning arrester continues to conduct, introducing overvoltage into the grounding line or limiting it within a certain range to protect the load equipment from damage.
Recovery phase: When the overvoltage on the power line disappears, the impedance of the power lightning arrester will recover and return to a high impedance state, ending the protection action.
