What Is A Surge Protector And What Is Its Basic Function?

Many people may not know what surge protective device is, let alone understand the function of surge protector. First and foremost, it provides absolute protection for the power supply system. So where does the impact of power supply system surges lie? This is actually divided into two factors: external causes (lightning strikes) and internal causes (start-up/shutdown of electrical equipment, faults, etc.). Surge protection, specifically transient overvoltage (TVS) protection, is best achieved through a multi-level protection approach.

The function of surge protection device

Lightning discharges can occur between clouds, within clouds, or between clouds and the ground.

Additionally, internal surges generated by the operation of large-capacity electrical equipment significantly impact power supply systems (China's low-voltage power supply standard: AC 50Hz 220/380V) and electrical appliances. Consequently, lightning and surge protection has become a focal point of attention.