How calculate the Transformer Impedence With Example

Question Posted / hari hajare

3 Answers
7011 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

How calculate the Transformer Impedence With Example..

Answer / viswakumar

% impedance is the voltage required to circulte full load
current in both HV and LV windings when the terminals of
the LV winding is shorted. This is just the SC test done
in the college lab.

For example if 5 % of 11KV circultes full load current in
the both 11KV side and 415 V side of a 11KV/415 volt
transformer then the % impedance of the transformer is 5%

Is This Answer Correct ?

2 Yes

0 No

How calculate the Transformer Impedence With Example..

Answer / abdulsubur

1000kva trasformer

1000/root3*.4=1445A=I flow in secondary current

400*5.75%=23

23/1400=.2 0hms

Is This Answer Correct ?

1 Yes

0 No

How calculate the Transformer Impedence With Example..

Answer / abdulsubur

impedence of trasformer = rated kva\root 3 *secondary
voltage

Is This Answer Correct ?

0 Yes

5 No

Post New Answer

More Electrical Engineering Interview Questions

what is full form of dyn11( in transformer)

5 Answers Divis Laboratories,

how can get electrical "c" licence.i am complited in DEEE.PASSING YEAR OF 1993.WORKING IN PVT COCERN LT LINE.PLEASE ADVISE ME .CELL NO 9994786021

0 Answers

does the transmission line model also requier active power in no-load operation?

1 Answers

what is the meaning of ceiling voltage in Generator exciter?

1 Answers

During Testing of Maintenance Free Earthing, How deep should be the Spikes of Earth Test Meter should be inserted in the soil(one spike is 15 Meter & Other spike is 30 Mtrs away from the Main Earth Electrode. Because, recently, we observed that when spike is inserted 3-4 Inch in the earth- results are better, If spike is inserted 1 feet deep than results are increasing.

0 Answers

what is meant by negative conductor?

2 Answers

what is the std. earthing resistance for 440V system or m/c, 33000/440 Volt substation? What is the std.?

2 Answers

How to calculate the value of earth capacitance in a transmission line.

0 Answers

why motor rating in KW?

2 Answers

iam using DM 3251 voltmeter(1 percent accuracy)for 11KV system PT ratio is 11KV/110V.can anybody explain what is the max and min voltage deviation.

0 Answers

what are the assumptions made in swineburne's test?

0 Answers

Why we use Y-Y connection in power transformer (8-10 MVA, 132 kV to 11 KV)and D-y in distribution transformer (2 MVA, 11 KV to 440 Volts)?

4 Answers

For more Electrical Engineering Interview Questions Click Here