Electrical problem

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Uploaded: 11.03.2015
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Three groups of bulbs, connected by a delta AB = 20, nBC = 20, nCA = 20 (20 bulbs connected in parallel in each phase, the current consumption of each lamp Ilamp = 0.5A), connected to a source of three-phase AC voltage to the current line voltage Ul = 127 V.
Determine the current value of the phase voltage, line current, the total power consumption and resistance phases. Draw a diagram of an electrical circuit. On graph paper to construct a scale vector diagram of voltages and currents. Construction of the vector diagram to explain.

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