Determine the equivalent impedances circuit referred to the primary side of a 20- kVA, 8000/240 V, 60 Hz transformer. The open circuit test was performed on the secondary side and the short circuit test was performed on the primary side. (on secondary) Open-circuit test Short-circuit test (on primary) Voc = 240 V VSC = 489 V loc = 7.133 A Isc = 2.5 A Voc = 400 W Psc = 240 W

Determine the equivalent impedances circuit referred to the primary side of a 20- kVA, 8000/240 V, 60 Hz transformer. The open circuit test was performed on the secondary side and the short circuit test was performed on the primary side. (on secondary) Open-circuit test Short-circuit test (on primary) Voc = 240 V VSC = 489 V loc = 7.133 A Isc = 2.5 A Voc = 400 W Psc = 240 W

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 3.10P: A single-phase step-down transformer is rated 13MVA,66kV/11.5kV. With the 11.5 kV winding...

See similar textbooks

Similar questions

Please explain each step
In part c determine the voltage across Rp and Xp .
A single-phase transformer has a voltage ratio on open circuit of 7900/660 V. The primary and secondary resistances are 0.55 ohm and 0.035 ohm respectively. The corresponding leakage reactances being 4.22 ohm and 0.18 ohm. The load is equivalent to a coil of resistance 3.85 ohm and inductive reactance of 4.2 ohm. Determine the terminal voltage of the transformer and the output in kW when supplying a given load using approximate equivalent circuit when the applied voltage is 7912 V. Your answer
I need the answer quickly
The ratings of a single-phase three-winding transformer are as follows:*primary winding: 300 MVA, 14kV*secondary winding: 300MVA, 200kV*tertiary winding: 40MVA, 20kV. The leakage reactances are:*Xps = 0.1 at 300MVA, 14kV*Xpt = 0.16 at 40MVA, 14kV*Xst = 0.14 at 50MVA, 200kV Neglecting the winding resistance and exciting current, calculate Xp, Xs and Xt using 300 MVA and 14kV as the base for the primary winding.
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
The open circuit and short circuit tests were performed on the primary side of the 25 kVA, 7620/240, 60 Hz transformer and the following data were obtained, open circuit test; Eoc = 7820 V, loc = 0.30 A and Poc = 500 W. Short circuit test Esc = 450 V, Isc = 3.5 A and Psc = 220 W. Determine the shunt and series impedances refer to the primary of the transformer." A.116K + j26K and 17.97 + j130 B.124K + jl4K and 2l.85 + j134 C. 112K + j22K and 15.95 + j128 D. 120K + jl0K and 19.95 + j132
Design a CT-FWR to supply a load of (502) with a waveform of the following specifications: - • Vdc = 12 V • Ripple factor = 0.1 % • the main power supply is (220 Vrms, 50 Hz). Determine the following values: - 1- The value of capacitor filter. 2- The maximum load voltage (VmR) 3- The transformer turns ratio (a). 4- The RMS value of the load voltage. 5- Draw the output waveform. (assume ideal diodes)
Q3/A/ The equivalent circuit impedances of a 20-kVA, 8000/240 V, 60-Hz transformer are to be determined. The open-circuit test was performed on the secondary side of the transformer and the short circuit test was performed on the primary side of the transformer .The following data was taken: Open-circuit Short-circuit test test (on secondary) Voc 240 v (on primary) Vsc 489 v Isc 2.5 A Psc 240 W loc 7.133 A Poc 400 W
Solve it...
In small transformers, the total copper loss may vary from the rated output. % of O 0.2 to 0.6 O 0.5 to 1 O 0.8 to 1.5 O 0.4 to 1
The equivalent circuit impedances of a 20-kVA, 8000/240-V, 60-Hz transformer are to be determined. The open-circuit test and the short- circuit test were performed on the primary side of the transformer, and the following data were taken: Open-circuit test (on primary) Short-circuit test (on primary) 8000 V V= 489 V I0.214 A 2.5 A P= 400 W P= 240 W Find the impedances of the approximate equivalent circuit referred to the primary side, and sketch the circuit.