Precautions for the use of explosion -proof border walls:
1. The explosion-proof side wall fan allows full voltage to start or lower voltage. However, it should be noted that the current at full voltage starts is about 5-7 times the rated current.When the power grid has insufficient capacity, the starting start should be used.
2. When testing the explosion -proof side wall fan, carefully read the product manual to check whether the wiring method is consistent with the wiring diagram; carefully check whether the working voltage of the supply fan power supply meets the requirements, whether the power supply is different or the same phase, and whether the capacity of the electrical component meets the requirementsEssence
3. When the explosion -proof side wall fan reaches the normal speed, the input current of the measuring fan is normal, and the operating current of the fan cannot exceed its rated current.If the working current exceeds its rated current, check whether the voltage provided by it is normal.
The role of the inverter in the explosion -proof side wall fan:
In the explosion -proof side wall fan, there is an important component, the inverter.Although there is no inverter fan that can still work, the effect of changing air changes will be greatly reduced, and the inverter plays an important role in explosion -proof side wall fan.
The existence of the inverter can reduce the starting current of the fan.When using the inverter, the frequency and working voltage will increase with the acceleration of the motor.In the working principle of the fans circuit, when the current is limited to less than 1.5 times, the DC switch is forced to start the fan.At this time, the current is more than 6 times that of the normal current, and the instantaneous current has a great impact on the rated controller of the entire fan.However, the installation inverter can effectively control the large current passed by instantly, which is a kind of protection for the fan controller.
In addition to a large current inhibitory, the inverter can also play a role in environmental protection and energy saving.The inverter can run the vertical discharge volume according to the transmission, which improves the work efficiency of the motor and saves electrical energy.The theoretical power of electricity is about 15%, but in the actual application scenario, there are not many electricity that can be saved, and it can be ignored.However, in terms of improving work efficiency, it is real.Fans with frequency frequency and fans without inverters are completely different.
As a part of the explosion -proof side wall fan, the inverter is relatively not conspicuous, but its effect is obvious when the fan works.