In order to avoid potential safety hazards in the use of frequency converters, and to keep the use effect of frequency converters better, we should do a good job in their maintenance and inspection. Therefore, frequency converter manufacturers remind us to pay attention to the following points when maintaining and inspecting frequency converters:
During maintenance, the operator must directly confirm the input power of the inverter. After the power supply is cut off, the electrolytic capacitor in the main circuit of the frequency converter may still be filled with residual high voltage.
You must wait and confirm the residual voltage in the capacitor before you can operate. Reference steps: cut off the power supply and wait for 5 ~ 10 minutes. After the charging indicator light goes out, use a multimeter to measure the DC filter capacitor voltage below 36V, and then repair and check the frequency converter;
When directly measuring the output voltage of the frequency converter, the rectifier AC voltmeter must be used. When using other general voltmeter or digital voltmeter to measure high pulse voltage, it is easy to cause misoperation or inaccurate display.
If you need to know the relevant knowledge of inverter, you can contact our inverter manufacturer.