Testing Of Induction Motor
![Direct or Load Test on Induction Motor](https://www.daenotes.com/daewp/wp-content/uploads/article-images/direct-load-test-3-phase-induction-motor.webp)
3 Phase induction motors are most widely used in industries. It has the following advantages: It is very simple and mechanically strong It has sufficiently high efficiency It is self-starting It requires a minimum of maintenance However, it has some…
The Buchholz’s system is used with oil immersed transformers. It consists of a gas operated relay. Whenever short circuiting occurs in the tank of a transformer, the winding temperature increases and the oil round the windings vaporizes. The insulation of…
The most commonly used connections for three phase transformers are: Star/Star Delta/Delta Star/Delta Delta/Star Star/Star (Y/y) connection: The connections are shown in Fig. 1(a). This connection is more economical for small size, high voltage transformer. Because the phase voltage is…
Rotating Core Transformer It is also called induction regulator. It works on the principle of induction. It is like an induction motor, whose primary is connected to a constant voltage source and secondary produces variable voltages. This type of transformer…