Answer to Question #117598 in Electrical Engineering for Unruly

Question #117598
A three-phase, 415 V load takes a line current of 800 A from a 3300/415V delta – star transformer. The 3300V system is supplied from an 11000/3300V star – star transformer. Draw the circuit diagram and, assuming no losses, find both line and phase values of voltages and currents in each part of the circuit. What will be the turns ratios of both transformers?
1
Expert's answer
2020-06-05T05:49:04-0400

a) Circuit diagram

Transformer B

Transformer A

b) Line and phase values of voltages and currents and turns ratios

Voltages;

V4 = 415 V

Vph4 = 240 V

V3 = 3300 V

Vph3 = 1905 V

V1 = 11000 V

Vph1       = 6350 V

Turn ratios;

Transformer A   = 13.75

Transformer B   = 3.33

Currents;

I4 = 800 A

Iph4 = I4 = 800 A

Iph3  = 58.2 A

I2 = I3  =     = * 58.2   = 100.8 A

Iph2 = I2 = 100.8 A

Iph1 = 30.2 A

I1 = Iph1 = 30.2 A


Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be first!

Leave a comment

Ask Your question

LATEST TUTORIALS
New on Blog
APPROVED BY CLIENTS