an open delta three phase transformer system has one transformer center tap that provide in neutral for single phase voltage. if the voltage from line to center tap 277 volt ,what is high leg voltage?
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an open delta three phase transformer system has one transformer center tap that provide in neutral...
4-9 Question Completion Status: QUESTION 4 A three phase delta source is connected to a three phase transformer. The primary of the transformer is connected in a delta configuration The line voltage on the primary is 240V. The turns ratio is 2:1. The secondary of the transformer is connected in a wye configuration. A wye connected load is attached to the secondary of the transformer. Each of the three load resistors has a resistance of 10 ohms. What is the...
A 120/240 volt, single-phase system is a system with its center tap as the neutral point. (See drawing below). The load of circuit No. 1 connected between Line 1 and neutral is 1500 watts and that of circuit No. 2 between Line 2 and neutral is 1000 watts. Assuming PF = 1. The current in amperes carried for the 1500 watt circuit is? The current in amperes carried for the 1000 watt circuit is? The combined neutral is? 1500 W...
Three single-phase transformers are connected in delta-delta configuration to step up a line voltage of 8 kV to 120 kV. A 24 MVA load at angle 30 is connected to the high voltage side. Calculate: a) Transformer turns ratio b) Load power in MW c) Line current in HV and LV sides d) The apparent power supplied by each transformer e) If one transformer is removed for maintenance, what is the reduction percentage in the transformer bank power rating with...
Calculate the short circuit current of a 3-phase delta-wye connected transformer if the short circuit occurs between phase A and the neutral at the low voltage side. The transformer is supplied by a 12.5kV line-to-line voltage. The transformer rating is 50kVA, 12.5kV/500V and 9.2% (leakage reactance)
A three-phase Y-A transformer is rated 225-kV:24-kV, 400 MVA and has a single-phase equivalent series reactance of 6.08 ? as referred to its high-voltage terminals. The transformer is supplying a load of 375 MVA at 0.89 power factor leading at a voltage of 24 kV (line to line) on its low-voltage side. It is supplied from a feeder whose impedance is 0.17 +/2.2 ? connected to its high-voltage terminals. For these conditions, calculate (a) the line-to-line voltage at the high-...
Note Unless otherwise specified, three phase systems are rated in terms of their line-to-line rms voltages So, for instance, a three-phase 230 kV transmission line has an rms phase voltage of 230/V3 kV. If you encounter a three-phase system specified with two voltages, e.g., 480/277 V, that implies that the line-to-line rms voltage is 480 V and the rms phase voltage is 277 v. Problem 8 The line-to-line voltage of a three-phase transmission line is Vbc-120 2.20° kV. Suppose the...
5. Consider the one-ine diagram shown below. The three-phase transformer bank is made up of three identical single-phase transformer, each specified by X1-0.004 Ω (on the high-voltage side), negligible resistance and magnetizing current, and turns ratio N2/N,-10. The transformer bank is delivering is delivering 110MW at 0.9 power factor leading to a substation bus voltage is 230kV. Determine the reactive power supplied by the source. (3.47) whose To rest of the system Generator ΔΥ 230-kV substation bus Step-up transformer bank...
What is the magnitude of the primary line current of a 14,000 – 480Y/277 V, delta-wye, three- phase distribution transformer if a 200kW, 0.88 P.F. lagging load is connected to the secondary. (assume that the transformer is lossless and that the primary is the high-voltage side)
- Three, single-phase transformens, connected delta celta scave An Industrial Load (3 phase) of 17 mw with a Pf of 70%. The clelta - celta CONNcction Results in a Low Voltage, Line to Line, of 6900 Volts. Please determine the value of the Apparent power drawn by the inclus trial planta z For problem 1), what is the low voltage Line current are the Low Voltage phase current 50 ANd 50 points) - 3 what is the AppARON & Loacl...
(15 points) In a balanced three-phase wye-delta system, the source has a positive (abc) phase sequence and a phase voltage of Van 200VrmsZ - 30°. If the line impedance is zero and the line current is LaA -6ArmsZ- 65°, find the load impedance per phase in the delta. AB AB Arms