Daily inspection of variable frequency power supply - Solutions - Huaqiang Electronic Network

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Before the power supply of the variable frequency power supply, check the temperature and humidity of the surrounding environment. If the temperature is too high, the inverter will overheat the alarm. Seriously, the power supply of the inverter power supply will be damaged and the circuit will be short-circuited. If the air is too humid, the internal short-circuit of the inverter power supply will be caused.

When the variable frequency power supply is running, pay attention to whether the cooling system is normal, such as: whether the air duct exhaust is smooth, and whether the fan has abnormal sound. Generally, the variable frequency power supply with higher protection level, such as: IP20 or above, can be directly installed. The variable frequency power supply below IP20 should be cabinet installed. Therefore, how the heat dissipation effect of the inverter cabinet will directly affect the normal operation of the variable frequency power supply. Exhaust system, such as whether the fan rotates smoothly, whether there is dust and blockage in the air inlet is a place that we can not ignore in daily inspection.
Whether the motor reactor, variable frequency power supply, etc. are overheated, have odor; whether the variable frequency power supply and the motor have abnormal noise; whether the current display of the variable frequency power supply panel is too large or the current change range is too large, and whether the output voltage and current of the UVW are balanced.