What are the causes of tripping of Roots blower frequency converter?

What are the causes of tripping of Roots blower frequency converter? If one circuit of the rectifier template of the aeration roots blower frequency converter fails, the overcurrent protection will be cut off and tripped. Do not make too much dust inside the inverter or radiator of the aeration roots blower, resulting in poor heat dissipation, and then the roots blower will be powered off and tripped.

1. Thunder and heavy rain weather, or the start of large equipment will cause the fluctuation of grid voltage, which may lead to the tripping of inverter voltage loss protection.

2. Due to long-time neglect of maintenance and cleaning, there is too much dust accumulated on the internal plate of the inverter or on the radiator. The dust accumulation reduces the heat dissipation effect of the machine itself, causing the inverter to trip due to the protection of the equipment.

3. There is too much dust and magazines deposited inside Roots blower and they are not cleaned in time, which leads to the reduction of the clearance between rotors and between rotors and between rotors and cavities, thus increasing the load resistance, causing the motor and frequency converter to be overloaded and causing the machine to trip for protection.

4. When selecting the type of frequency converter, the selected model capacity is too small. Generally, the capacity of frequency converter shall be about 20% larger than the rated power of motor to ensure that the frequency converter can still drive when the motor reaches full load.

5. If the power supply voltage is too high or too low, the converter will overheat and cause protection tripping. If the power supply voltage exceeds 410 V, the heat generated inside the converter will increase, leading to protection tripping. If the power supply voltage is lower than 360 V, the working current of the inverter will increase and overcurrent protection tripping will occur.

6. The converter has its own problem. One of the rectifier templates at the back of the converter is damaged, which causes the other two circuits to be in over-current state and trip. If the roots blower does not start with no load, it will trip or suffocate. When starting, remember that the roots blower starts with no load.

In case of ordinary tripping, the roots blower will not be damaged due to the simple tripping of roots blower. At this time, what should be done is to open the vent valve, start the fan and check the operating condition of the fan. The motor is burnt out. If the motor is burnt out and the roots blower cannot be started, then we need to replace the motor, and the loss is relatively serious. Roots blower cannot hold the pressure, which may easily lead to motor damage, and the bearing pressure of the fan will suddenly rise, which may cause serious problems.

The unstable voltage is also one of the reasons for the protective power-off tripping of the aeration roots blower inverter. If the voltage is too low and lower than 360 V, the overcurrent protection of aeration roots blower will be cut off and tripped; otherwise, if the voltage exceeds 410 V, the converter will be overheated and cut off and tripped. In the application scenario of Roots blower, when large equipment in the surrounding power grid starts and other factors lead to more violent voltage fluctuations, the power failure protection tripping of the fan will also be caused.

If the internal clearance of roots blower rotor, cavity, etc. becomes smaller due to long-term rust and dust, the resistance will increase, which will lead to overload and power off protection. 1. Precautions for startup If the roots blower does not start with no load, it will trip or suffocate. When starting, remember that the roots blower starts with no load.

2. Simple tripping of roots blower will not cause damage to roots blower. At this time, what should be done is to open the vent valve, start the fan and check the operating condition of the fan.

3. Motor burned out If the motor is burned out and the three blade roots blower cannot be started, then we need to replace the motor, and the loss is relatively serious. Roots blower cannot hold the pressure, which may easily lead to motor damage, and the bearing pressure of the fan will suddenly rise, which may cause serious problems.