Before powering on the 400Hz power supply/AC inverter, check the surrounding temperature and humidity. Failing to isolate low-voltage loads prior to operation may result in arcs, posing a risk to personnel and equipment. Instantly connecting the power source can also cause abnormal voltage fluctuations, polluting the power grid. Excessive heat may trigger overheat alarms in the AC inverter, potentially leading to damage of the power supply unit and circuit short-circuits; excessively moist air can cause the inverter power supply to short-circuit directly.
During the operation of AC inverter power supplies, pay attention to the cooling system's functionality, such as whether the air duct exhaust is smooth and if there are any abnormal sounds from the fan. Generally, high protection-grade AC inverter power supplies, such as IP20, can be directly installed. For AC inverter power supplies under IP20, they are typically installed in cabinets. The cooling effect of the inverter cabinet directly affects the normal operation of the power supply. Under low-voltage parallel switching conditions, direct or low-voltage main switch arcing may cause damage; operate the low-voltage closing switch while standing on an insulating pad. Ensure the low-voltage main switch is closed, then turn off the low-voltage branch switch. The fan rotation of the inverter power supply's exhaust system should be smooth. Whether there is dust and blockage at the intake is something we cannot overlook during our daily inspections.
Are the motor reactors and AC variable frequency power supplies overheating or emitting an odor; do the AC variable frequency power supplies and motors produce any abnormal sounds; is the current range displayed on the AC variable frequency power supply panel too large or too small, and is the UVW output三相 voltage and current balanced?
