Advantages and Disadvantages of Electric Braking

In this article, we shall study the advantages and disadvantages of Electric Braking. The electric brake is better than a mechanical friction brake in many respects. however, it has some disadvantages with respect to mechanical brakes. Advantages of Electric Braking The mechanical braking system has brake blocks and brake lining. The mechanical brake functions on … Read more

Shaft Grounding Devices | Shaft Earthing Devices

Shaft grounding devices minimize the shaft voltage and prevent bearings damage caused by the circulating current. There are numerous reasons for developing shaft voltage in the motor. The main reasons for developing shaft voltage are as follows. Leakage Induction High frequency circulating currents caused by VFD How Shaft Earthing prevents bearing damage? The shaft voltage … Read more

What is the Difference between Soft Starter and VFD?

The main difference between VFD and Soft Starter is that a VFD can increase or decrease the speed of the motor, while a soft starter only controls the smooth start and stop of that motor. The soft starter is an electronic device used for starting and stopping the induction motor smoothly. The soft starter is a kind of reduced voltage starter. The soft starter … Read more

Controlling Multiple Motors with one VFD

In many applications, we use a single VFD for multiple motors. In this method, more than one motor is connected to a single VFD drive. By controlling multiple motors with one VFD, we can control the speed of all the motors connected to a single VFD. Advantages of using one VFD to control multiple motors … Read more

Why Insulated Bearing is used for VFD driven Motor?

Insulated bearing for motor is used to prevent the circulating current through the motor bearing. The circulating bearing  current can damage the bearing. When we run induction motor by variable frequency drive, it is apt to fail caused by bearing failure. In this article we will  discuss how the circulating current flows through the motor … Read more