Three-phase, 50Hz, 6600/1000/440 Y V transformer
A 3-phase, 50 Hz, 6600 /1000 /440 Y V. transformer.
1. Determine suitable numbers of turns to ensure the peak flux does not exceed 0.03 Web.
2. Determine the primary line current and power factor if the 1000 V winding delivers a balanced load of 100 kVA at 0.8 power factor lagging and the 440 V winding delivers a balanced load of 50 kW at unity power factor.
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A 3-phase, 50 Hz, 6600 /1000 /440 Y V. transformer (HELP)
Question: A 3-phase, 50 Hz, 6600 /1000 /440 Y V. transformer. (i) What is the purpose of using three winding transformers? (ii)Determine suitable numbers of turns to ensure the peak flux does not exceed 0.03 Web. (ii) Determine the primary line current and power factor if the 1000 V winding delivers a balanced load of 100 kVA at 0.8 power factor lagging and the 440 V winding delivers a balanced load of 50 kW at unity power factor.
2.14 The resistances and leakage reactances of a 40-kVA 60-Hz 7.97-kV-V:240-V single-phase distribution transformer are where...
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4. Three ideal single-phase transformers are connected as shown below. The turns ratio of each single-phase...
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can you calculate this question and explain why? thanks 1. A 250-kVA, 11000/2200-V, 50-Hz, single-phase transformer...
can you calculate this question and explain why?
thanks
1. A 250-kVA, 11000/2200-V, 50-Hz, single-phase transformer has the following parameters: RI 1.3 , R2 0.05 , Rel 193 k2, X1 4.5 Q X2 0.16 2 I,- 80 kQ Xml (a) Draw the approximate equivalent circuit of the transformer showing all the circuit parameters referred to the low-voltage side. Use the approximate equivalent circuit to calculate the input voltage and voltage regulation of the transformer when it delivers full load at...
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2.14 The resistances and leakage reactances of a 40-kVA 60-Hz 7.97-kV-V:240-V single-phase distribution transformer are where subscript 1 denotes the 7.97-kV winding and subscript 2 denotes the 240-V winding. Each quantity is referred to its own side of the transformer. Consider a rated-kVA load connected at the low-voltage terminals. Assuming the load voltage to remain constant at 240 V use MATLAB to plot the high-side terminal voltage as a function of the power-factor angle as the load power factor varies...
Al. A 1 kVA single-phase step-down transformer is connected to a 220 V, 50 Hz A.C. source and delivers power to a load. The winding resistance and reactance at secondary side are 0.02 2 and 0.1 12 respectively. The maximum value of core flux is 0.248 mWb and the secondary winding contains 1000 turns. Evaluate a. b. the voltage induced on the secondary side; the turn ratio of primary side to secondary side; the rated current on both sides; and...
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Question 4 (10 marks) A) A 10-kVA, 415-V, three phase, Y -connected synchronous generator has a winding resistance of 0.3 Q and a synchronous reactance of 0.6 on a per phase basis. Determine its voltage regulation at full load when the power factor is (a) 75% lagging and (b) 75% leading. B) (10 marks) A 220-V, Y-connected, three-phase, synchronous motor has a synchronous reactance of 4 O/phase and negligible armature winding resistance. At a certain load the motor takes 7.5...
4. Three ideal single-phase transformers are connected as shown below. The turns ratio of each single-phase transformer is 2400/480. Assume a perfectly balanced three- phase system (with ABC sequence) and that the delta side is the high-voltage side. (a) If IA is 8 amperes at 20 degrees, determine the phasor current Ix. (b) If the three-phase load is 100 kW at 0.87 lagging power factor and 465 V, determine how much current is flowing in the primary winding of T3....
can you calculate this question and explain why?
thanks
1. A 250-kVA, 11000/2200-V, 50-Hz, single-phase transformer has the following parameters: RI 1.3 , R2 0.05 , Rel 193 k2, X1 4.5 Q X2 0.16 2 I,- 80 kQ Xml (a) Draw the approximate equivalent circuit of the transformer showing all the circuit parameters referred to the low-voltage side. Use the approximate equivalent circuit to calculate the input voltage and voltage regulation of the transformer when it delivers full load at...
Q-1 A 60Hz, 480V/240V,960V A transformer is supplying a 960W passive load at 240V. The resistances of the primary side and secondary side of the transformer are 1.092 and 0.252 respectively. If the no load losses of the transfomer is given by P-Vã 4800 W where Vn is the input voltage of the transformer in Volt. Answer the following: a) Calculate transformer efficiency b) Do you allow this transformer to be connected to 240V 50Hz distribution system? Explain. c What...
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