What is the difference between 0.2 and 0.2S class CT?
The metering class current transformer is used for metering the energy for revenue purposes. Therefore, the metering class current transformer must be as accurate as … Read more
Machines
An electrical machine converts mechanical energy into electrical energy or vice versa. The transformer is also an electrical machine which transform the voltage without changing the frequency. We will discuss about the;
- DC Motor
- DC generator
- Induction Motor
- Transformer
- Electrical drives
- Alternator or synchronous generator
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. … Read more
Accuracy Limit Factor of Current Transformer
Definition- The accuracy limit factor (ALF) of a current transformer (CT) is a parameter that indicates the highest multiple of the rated current at which … Read more
Why can a 50Hz CT work on 60Hz systems, and why can’t a 60Hz C.T. work on a 50 Hz system?
CT or PT functions on the principle of electromagnetic induction. The electrical energy is first converted into magnetic energy and again the magnetic energy is … Read more
What is the Insulation Class of Transformer oil?
We first discuss what it means by insulation class and what is its importance. The insulating material is classified according to the maximum temperature which … Read more
Dry Type Transformers: Types and Applications
What is a Dry Type Transformer? A dry-type transformer does not use any liquid for its cooling and insulation. An oil-filled transformer uses mineral insulating … Read more
Advantages and Disadvantages of Induction Motor
There are some of the advantages of induction motors compared to DC motors and synchronous motors. We will also discuss disadvantages of induction motors compared to … Read more
Resistance and Leakage Reactance or Impedance of Transformer
Leakage Reactance of Transformer The flux generated in the primary winding of the transformer gets linked with both the primary and secondary winding. However, all … Read more
Advantages of Parallel Operation of Transformers
Parallel operations of transformer: Definition-Connection of the primary winding of two transformers to a common supply voltage and connection of the secondary winding of both … Read more
How to Change the Direction of Rotation of DC Series Motor?
In this post, we will discuss how to change the direction of rotation of the DC Series Motor. The rotational force of the DC motor … Read more