Problem 1 | (30 points) followery A test 10,000 VA 115/230v transformer has the data Short-cacuit...
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...
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...
A 5 MVA 230/13.8 kV, single-phase transformer has a per-unit resistance of 1% and a per-unit reactance of 5%. The open-circuit test performed on the low voltage side of the transfromer yielded the following data: VOC=13.8 kV, IOC=21.1 A, and POC=90.8 kW. (a) Find the equivalent circuit referred to the high voltage side of this transformer. (b) If the transformer is operating at full-load and at 0.8 pf lagging, find the voltage regulation of the transformer at this operating condition.
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-...
The following data was obtained when open circuit and short circuit tests were performed on a single phase, 50 KVA, 2,400:240 V, 60 Hz distribution transformer: With high voltage winding open circuited: Voc = 240 V, Ioc = 4.85 A, Poc = 173 W With low voltage winding short circuited: Vsc = 52 V, Isc = 20.8 A, Psc = 650 W a) Determine the equivalent circuit of the transformer referred to its high voltage side and to its low...
A transformer with three single phases having the values of 10kVA, 60Hz, and 460/120V are connected to form a transformer bank of 460/208V. EACH transformer has an equivalent impedance of 1.0+j2.0 Ohms when referred to the high side. The transformer bank supplies 20kW at 0.8 pf lagging at rated voltage 208V. What is the voltage regulation of the transformer bank? Solve with real OR per-unit values.
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...
lI. A single-phase 100 KVA, 2000/200 V transformer has the following test results Open-circuit (OC) test (LV side): 200 V, 8,0 A, 600 W Short-Circuit (SC) test (HV side): 100 V,50 A, 2000 W a. Determine the approximate equivalent circuit referred to the HV side. b. Find the voltage regulation at full-rated current delivering rated voltage and PF of 0.8 lagging. c. Calculate efficiency of transformer d. Assume that, voltage at HV side is 2000 V. Calculate the voltage at...
Problem 1 A 60Hz transformer is rated 30 (kVA), 4000(V)/120(V). The open circuit test, with the high voltage side open, gives Po= 100 (W), loc = 1.1455 (A). The short circuit test, measured with the low voltage side shorted, gives Pse = 180 (W), Vse = 129.79 (V). a) Determine the equivalent circuit for the transformer (both open and short circuit) b) Calculate the circuit components. (Req, Xeq, Rc, Xm)
Q1: A 20-kVA 8000/480-V distribution transformer has the following resistances and reactances: Rp 322 X,-45 Ω R,-0.05 Ω X,-0.06 Ω The excitation branch impedances are given referred to the high-voltage side of the transformer. (a) Find the equivalent circuit of this transformer referred to the high-voltage side. (b) Assume that this transformer is supplying rated load (20kVA) at 480 V and 0.8 PF lagging. What is this transformer's input voltage? What is its voltage regulation? (c) What is the transformer's...