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Q6) A 3-phase A/Y transformer is assembled by connecting three 830-VA, 240/120-V single phase transformers. Each...
06) A 3-phase A/Y transformer is assembled by connecting three 830-VA, 240/120-V single phase transformers. Each...
06) A 3-phase A/Y transformer is assembled by connecting three 830-VA, 240/120-V single phase transformers. Each transformer parameters are as follow: R,-15.5 Ω . X,-18.2 Ω , ROF 6.54k Rs 2.4 Ω . Xs-2.8 Ω . XMP-4.64 Ω a) Determine the 3-phase transformer bank's ratings (voltages and power). b) Draw the winding arrangements, equivalent Y/Y connections, and per-phase equivalent circuit
3. Three single-phase, 10 kVA, 460/120 V, 60 Hz transformers are connected to form a three-phase...
3. Three single-phase, 10 kVA, 460/120 V, 60 Hz transformers are connected to form a three-phase 460/208 V transformer bank. The equivalent impedance of each transformer referred to HV side is 1.0 + j2.0 Ω. The transformer delivers 25 kW at 0.9 pf lagging at rated voltage. Answer the following questions: (a) Draw a schematic diagram showing the transformer connection. Draw three separate single-phase transformers and complete their primary and secondary connections. (b) Determine the magnitude of transformer primary and...
Draw schematic (connection) diagrams for three-phase Y-Y and Y-Δ connected transformers using three single-phase (50 VA,...
Draw schematic (connection) diagrams for three-phase Y-Y and Y-Δ connected transformers using three single-phase (50 VA, 120V/25V) transformers you have previously worked with in the lab. Show proper dot markings for each configuration. I. 2. Find the line-line voltage ratio (VuVa) for each configuration. For a three-phase Δ-connected resistive load (25 Ω in each leg), connected on the transformer low voltage side, calculate the line current on each side of the transformer for each configuratio Is it safe to operate...
Problem 3. A three-phase transformer is constructed using three single-phase two-winding trans- formers, each has the...
Problem 3. A three-phase transformer is constructed using three single-phase two-winding trans- formers, each has the same ratings of 500 MVA, 15/240 kV, and leakage impedance of XT.p.u 0.2 p.u The high-voltage side of the three-phase transformer is connected to a three-phase Y-connected load that absorbs 1000 MVA at 0.9 power factor (lagging). The phase-a voltage across the load is Van 2402(0) kV. Answer the following questions. [10 points] a) Calculate the phase-a voltage at the low-voltage side (denoted by...
06) A 3-phase A/Y transformer is assembled by connecting three 830-VA, 240/120-V single phase transformers. Each transformer parameters are as follow: R,-15.5 Ω . X,-18.2 Ω , ROF 6.54k Rs 2.4 Ω . Xs-2.8 Ω . XMP-4.64 Ω a) Determine the 3-phase transformer bank's ratings (voltages and power). b) Draw the winding arrangements, equivalent Y/Y connections, and per-phase equivalent circuit
Draw schematic (connection) diagrams for three-phase Y-Y and Y-Δ connected transformers using three single-phase (50 VA, 120V/25V) transformers you have previously worked with in the lab. Show proper dot markings for each configuration. I. 2. Find the line-line voltage ratio (VuVa) for each configuration. For a three-phase Δ-connected resistive load (25 Ω in each leg), connected on the transformer low voltage side, calculate the line current on each side of the transformer for each configuratio Is it safe to operate...
Problem 3. A three-phase transformer is constructed using three single-phase two-winding trans- formers, each has the same ratings of 500 MVA, 15/240 kV, and leakage impedance of XT.p.u 0.2 p.u The high-voltage side of the three-phase transformer is connected to a three-phase Y-connected load that absorbs 1000 MVA at 0.9 power factor (lagging). The phase-a voltage across the load is Van 2402(0) kV. Answer the following questions. [10 points] a) Calculate the phase-a voltage at the low-voltage side (denoted by...
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