Transformer Oil BDV Test
The BDV of transformer oil is the breakdown voltage of transformer oil. The BDV or dielectric strength of oil is the maximum voltage withstand capacity … 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
Effects of Air Gap On the Performance of Induction Motor
The constructional overview of the induction motor The induction motor has a stator and the rotor as its major parts. The stator is a stationary … Read more
DC Injection Braking Of Induction Motor
Induction Motor Braking Methods There are many ways of applying the brake to the induction motor. The DC injection braking is a sort of dynamic … Read more
Torque Slip Characteristics Of Induction Motor
Torque slip characteristics of induction motor show detailed information about torque and slip. There are three operating zones of induction motor. We shall discuss these … Read more
Cogging and Crawling of Induction Motor
What is Cogging and Crawling? The phenomenon of cogging and crawling of the induction motor happens due to improper motor design or operation by feeding the … Read more
Effect of Unbalanced Voltage on Induction Motor
The induction motor is most vulnerable if the voltage is higher or lower than its rated voltage. The performance of the motor depends on the … Read more
Dynamic Braking in Variable frequency Drives
Dynamic braking is the method of stopping the motor by dissipation of heat in the resistor. When VFD drives a motor, the motor acts as … Read more
Current Transformer Secondary Grounding
According to the ANSI guide, the IEEE standard specifies the current transformer grounding practices. The grounding of the current transformer is critical from the perspective of safety … Read more
Transformer Magnetizing Inrush Current
When energizing a power transformer, the transformer draws a magnetizing current. The magnitude of the magnetizing current is several times higher than the rated current … Read more
IR Compensation in DC Drive
IR compensation method is used to provide the speed regulation in the DC drive. The DC drive increases the output voltage of the drive to … Read more