ELECTRICAL TECHNOLOGY AND INDUSTRIAL PRACTICE

Thursday, November 15, 2018

Power System November 15, 2018

Circuit Breaker-Type, Application, Rating, Working Principle and Operation-Part 1

Circuit Breaker is a device which converts a current carrying part into a voltage insulating part. (This definition was given by my college's departmental H.O.D Mr. P. K. P)

Circuit breaker is an essential element of electrical power system. Circuit Breaker is the device by which a faulty circuit can be isolated automatically. It can also be used for manual intentional operation.

Rishi 15

Friday, October 19, 2018

measurement October 19, 2018

Measurement of Reactive Power by Single Wattmeter method

Meter for active power, but measuring reactive power!!!!! Strange but true. Let's see how wattmeter measures reactive power!!!!!!

Rishi 5

measurement October 19, 2018

Three Phase Power Measurement By Two Wattmeter Method

It is always better to have a clear idea about you need. Wheather it is your life or your power system. So measure properly your power demand!!!!!!

Rishi 6

Monday, October 8, 2018

Transformer October 08, 2018

Polarity Test Of Transformer

Transformer receives input A.C voltage and gives voltage at secondary terminals due to induction. So when primary terminals are connected to an A.C source the positive and negative polarity switches between the two terminals.

Polarity test to be done to identify which terminals of the primary and secondary are having same polarity i.e. positive or negative.

Rishi 6

Tuesday, October 2, 2018

Transformer October 02, 2018

Transformer Vector Group Determination

Determination of transformer vector group is very essential before installing it for service.

Transformer vector group connections are made based on the winding polarity. But after the winding connection is made it is necessary to check if the desired vector group has been achieved.

So let us see how the tests are carried out.

We shall discuss about few vector groups, the rest you can derived in line with this atricle.

Rishi 13