Mathcad - 05-22

Mathcad - 05-22 - 120 volt = V prated 7200 V = Problem...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
208 V V x 207.846V = V x 3 V xLN = The line voltage on the secondary will the the square root of three times the line to neutral voltage, so V xLN 120V = V xLN V srated = The low side is connected in wye, so the line to neutral voltage will be equal to the coil rating of each phase V h 12.471kV = V h 3 V hLN = The line voltage on the primary will the the square root of three times the line to neutral voltage, so V hLN 7.2kV = V hLN V prated = Since the high side is connected wye the line to neutral voltage will be equal to the coil rating of each phase b. Wye-Wye Connection H1 H2 X1 X2 H1 H2 X1 X2 H1 H2 X1 X2 n A B C n a b c a. Solution S rated 10 kVA = V srated
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 120 volt = V prated 7200 V = Problem 5-22: kVAR kW kVA kW So the three-phase transformer is rated 12471 V -- 208 V or nominally 12.5 kV -- 208 V c. The total three phase power rating is simply three times the individual phase S rated3ph 3 S rated = S rated3ph 30kVA = d. The phase ratio is the ratio of the voltage ratings for one of the single-phase transformers that comprise the bank PR V prated V srated = PR 60 = The bank ratio is the ratio of the rated line voltages found in part b: BR V h V x = BR 60 =...
View Full Document

Page1 / 2

Mathcad - 05-22 - 120 volt = V prated 7200 V = Problem...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online