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Module of the rated currents - transformer:
The transformer of the Face(Figure) 2 is a transformer of type Delta-Y (the neutral of Y is grounded). The rated output is of 1500 kVA, the rated voltages are 12.5 kV in the primary and 480 V in the secondary and the equivalent reactance of direct sequence of the transformer is 5 %.
1-What is the module of the rated currents associated with the rolling-ups in the primary?
2-What is the number format which corresponds to this connection of the transformer according to the principle of the clock?
3-What is the rate of the rolling-ups between the primary and secondary?
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explain
Q. A transformer is rated 10 kVA, 220:110 V (rms). Consider it an ideal transformer. (a) Compute the turns ratio and the winding current ratings. (b) If a 2-load resistance
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