What safety precautions should be taken when using general-purpose inverters?

When using a general-purpose inverter, you need to pay attention to the following safety precautions:
Reliable grounding‌: General-purpose inverters must be reliably grounded to ensure safe operation and effectively suppress electromagnetic interference.
‌Avoid voltage withstand test and insulation resistance test‌: General-purpose inverters should not be subjected to voltage withstand test and insulation resistance test. A 500V insulation resistance meter should be used for measurement, and the number of shake tests should be minimized to ensure safety.
‌Ventilation conditions‌: When controlling the motor, it is necessary to ensure that the motor has good ventilation conditions, and take external ventilation and cooling measures when necessary.
‌Current control‌: When using a general-purpose inverter to drive multiple motors, it is necessary to ensure that the total current of the motor is less than the rated current of the inverter, and calculate the impact of the starting current of a motor to avoid overcurrent tripping of the inverter.
‌Capacitor compensation device‌: The capacitor compensation device cannot be connected to the output side of the general-purpose inverter to avoid overcurrent protection tripping or even damage to the inverter. ‌ ‌Operation method‌: The operation and stop of the motor driven by the general frequency converter cannot be directly operated by low-voltage circuit breakers or AC contactors. It should be operated through the control terminals of the frequency converter, otherwise the frequency converter will be out of control.
‌Capacity matching‌: Avoid the general frequency converter driving the motor that does not match its capacity. A small motor capacity will affect the effective torque output, and a large capacity will increase the harmonic capacity.
‌Explosion-proof motor‌: When the general frequency converter is used to drive an explosion-proof motor, the frequency converter should be placed outside the dangerous place because the frequency converter has no explosion-proof performance.
‌Lubrication method‌: When used to drive a gear reducer, the scope of use is restricted by the lubrication method of the gear rotating part, and the maximum allowable speed value needs to be considered.
‌Read the instruction manual carefully‌: Read the instruction manual carefully before use, and pay special attention to the fact that the input and output main power cannot be connected in reverse, and "COM" and "GND" cannot be mixed.
These safety matters ensure the stable operation of the general frequency converter and the safety of the operator.