VFDs have relatively complete protection functions, and can realize various control and closed-loop regulation after cooperation with other intelligent equipment (PLC, DCS). In practical applications, avoiding risks and using them reasonably are the keys to improving the efficiency and service life of the inverter.

The harmonic interference phenomenon of the inverter includes: after the inverter starts or runs, the motor overheats, whistles (including increased noise, etc.), and vibrates/vibrates. The motor often breaks down, it is found that the stator insulation of the motor is breakdown after disassembling the motor. The connecting wire between the motor and the inverter will overheat, burst, and even catch fire.