The switching power supply will generate a short (1/2~1 power cycle, EX: 60Hz power supply 1/120~1/60 second) high current (about 20~100A according to product design) at the moment when the input power is supplied. , please refer to the product specification), after the product is turned on, the normal current input will resume, and it will***** appear at the moment when the power input terminal is powered on each time. This is a normal phenomenon and will not cause damage to the power supply. However, it is not recommended to continuously power on/off the power supply. It should also be noted that if multiple power supplies are used to power on at the same time, it may cause the protection switch of the system power distribution to trip. On/Off.