A 4-KV A,200/400 V single phase transformer has the following open circuit test and short circuit test Results: O.C.T at low voltage side: 200 V, 0.7A, 65 W PRC S.C.T low voltage windings are short circuited: 15 V, 10 A, 75 W Cupper Lusing 1. Calculate the series impedance of the transformer and find Rc and Xm. Draw the equivalent circuit referred to the high voltage side. 2. Find the full load efficiency at unity power factor. PP: 1 2001460 0:45 Full load voltage regulation at 0.8 power factor lagging. A Draw the phasor diagram when the transformer operate at full load 0.8 lagging pf S-4x10²

A 4-KV A,200/400 V single phase transformer has the following open circuit test and short circuit test Results: O.C.T at low voltage side: 200 V, 0.7A, 65 W PRC S.C.T low voltage windings are short circuited: 15 V, 10 A, 75 W Cupper Lusing 1. Calculate the series impedance of the transformer and find Rc and Xm. Draw the equivalent circuit referred to the high voltage side. 2. Find the full load efficiency at unity power factor. PP: 1 2001460 0:45 Full load voltage regulation at 0.8 power factor lagging. A Draw the phasor diagram when the transformer operate at full load 0.8 lagging pf S-4x10²

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.16P: A single-phase, 50-kVA,2400/240-V,60-Hz distribution transformer has the following parameters:...

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Similar questions

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(a) An ideal single-phase two-winding transformer with turns ratio at=N1/N2 is connected with a series impedance Z2 across winding 2. If one wants to replace Z2, with a series impedance Z1 across winding 1 and keep the terminal behavior of the two circuits to be identical, find Z1 in terms of Z2. (b) Would the above result be true if instead of a series impedance there is a shunt impedance? (c) Can one refer a ladder network on the secondary (2) side to the primary (1) side simply by multiplying every impedance byat2 ?
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all äabl (CME 446) 1 If F3=0.1 and Z3=45 Q, then the impedance of the next stage in the multi-section transformer is: of O a. 40.5 stion O b. 49.5 O C. 55 O d. None O e. 36.8 s page Next page