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A 1000-VA 230/115-V transformer has been tested to determine its equivalent circuit. The results of the...
please solve it clearly
A 1000-VA, 230/115-V has the following equivalent circuit parameters Referred to high voltage side Referred to low voltage side Req=0.503 Ohm Rc=3383 Ohm Xeq=1.905 Ohm XM=1099 Ohm (Find the expected values for the open and short circuit tests and fill the following table (show all steps Short Circuit test (High voltage side) =VSC - Isc-rated current Pse Open Circuit test (Low voltage side) -Voc -Ioc Poc Then .a) Find the equivalent circuit of this transformer referred...
Electric Machinery
Problem 2: [50 points] A 15-KVA, 230/2300-V transformer is considered. The following test data have been taken: | OC Test (on Primary) Voc = 230 V loc = 2.8 A Poc = 100 W SC Test (on Secondary) Vsc = 47 V Isc = 9.5 A Psc = 350 W (a) Find the equivalent circuit of this transformer referred to the high- voltage side. [10 points] (b) Find the equivalent circuit of this transformer referred to the low-...
3. The following measurements have been performed through the open-circuit test of a 15 kVA, 2300/230 V transformer: Voc 2300 V,loc 0.21 A, Poc 50 W, What parameters can be calculated through the open-circuit test of a transformer? Calculate the parameter values from the given data. (The equivalent circuit of a transformer is very similar to that of the induction motor shown above. The only differences are that there is no slip term's' and there is a resistance Rc representing...
I have these data from Open circuit and Short circuit tests:
OCT:
Voc= 105.9 v
Ioc= 0.08 A
Poc= 2 W
SCT:
Vsc= 12.9 V
Isc= 0.45 A
Psc= 3 W
pf= 0.669
How to correclty calculate the following
parameters:
The transformer rating
is
a. winding polarities b. core resistance and magnetization losses c. flux linkage losses d. winding resistances e. efficiency f. voltage regulation
Question 31 (17 points) 120/120 single-phase transformer. Calculate the values for the equivalent circuit for the single-phase transformer for the given short and open circuit test shown below. (2 points) Draw the equivalent circuit. (1 point each) Find Ssc, QSC, Soc, Qoc, R1, R2, XI, X2, Rc, Xm, PFsc, PFoc, (esc θ。c) phase angel between V and I. What is the power rating of this transformer? Short circuit test (performed at High Voltage side) Vsc 16.20V rms, Isc 5.00 A...
For the following single phase transformer measurements
calculate each of the equivalent circuit parameters: Rm, Xm, R1,
Xf1, R2, Xf2
Given:
No load: Voc =
120.77V
Ioc = 116
mA Poc =
3.0 w
Qoc = 13.7
VAr pf = .217
Full load: Vsc =
8.0V Isc
= 430 mA
Psc = 3.4
w
Qsc = .371
VAr pf = .994
0 Rm E Es N N2 2 9 a:5
A 2.2KVA 600/120 V, transformer has the following data for its OC test and SC test: OC Test: Voc: 120V Ioc: 0.6A Poc: 16W SC Test Vsc = 12V Isc = 3.67A Psc= 30W (a) Find the equivalent circuit referred to its HV and LV side. (b) If it operating as a step-down transformer, and delivering its rated current at the rated voltage and 0.85 pf lagging, find what will be the input voltage. (c) Find the Voltage regulation of...
4.16 Consider a 50kVA, 2400/240V, 60Hz distribution transformer. Assume that the open-circuit and short-circuit tests were performed on the primary side of the transformer and that the following data were obtained: Voltmeter Ammeter Wattmeter Open-Circuit Test (on Primary) Voc = 2400 V 1oc=0.2083 A Poc=185 W Short-Circuit Test (on Primary) Vcc=52 V 15c=20.8333 A Psc=615W Determine the impedances of the approximate equivalent circuit referred to the primary side.
A 20 KVA 20k/480 V 60 Hz distribution transformer is tested with the following results. Open circuit test, measured from the LV, Voc=480V, 10c-1.6A, Poc=268.8W. Short circuit test, measured from the HV, Vsc1130V, ISC1A, PS-395.5W. (a) Find the equivalent circuit of this transformer with all of the impedances referred to the HV side. Re- MAX= ΜΩ Rsc= Ohms X sca Ohms (b) Find the equivalent circuit of this transformer in per unit with respect to its own rated powr. Re-...
4. Figure shows a power source that feeds a 100 kVA 14/2.4 kV transformer through a feeder with impedance of 100/60° Ω Load 90 kw 0.85 PF lagging Feeder transmission line) Source Transformer Load The transformer has been tested to determine its equivalent circuit. The results of the tests are: Open-circuit test Voc = 14 kV oc 0.1 A Рос-800 w Short-circuit test Vsc 800 V Isc = 7A Psc 2 kW The load on the transformer is 90 kW...