What harm will the voltage sag cause to the inverter

What harm will the voltage sag cause to the inverter


Inverter is a device that is widely used in our production process, mainly used to provide the power supply voltage required by the motor to achieve the effect of energy saving and speed regulation. The inverter is mainly composed of rectification (AC to DC), filtering, inverter (DC to AC), braking unit, drive unit, detection unit and micro-processing unit.

my country's power grid is mainly composed of substations, 110kv, 35kv, 10kv and so on. Among them, the 10kv substation has the widest coverage. The 10kv substation is prone to short-circuit or over-current faults during operation. During the time period from the failure of the 10kv circuit to the removal of the fault, other circuits may not be powered off immediately, but there will be a state of voltage sag, which forms what we often call "shake power".

General inverters have functions such as overcurrent, overvoltage, and overload protection. When the "shake electricity" occurs, the inverter will stop in order to protect itself. When the inverter is stopped, it will not only cause chaos in production, but also explosions may occur in special occasions.
Therefore, the inverter must be protected against voltage sags during the production process.