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4.5. In a balanced 480 V three-phase system, the line current is measured to be 15 A. Find ZY and Z .
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4.5. In a balanced 480 V three-phase system, the line current is measured to be 15 A. Find ZY and Z .

User Aaronheckmann
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2 votes

Answer:

We are to find bar Zy and bar X in this question

We have Va = 480v

IL = 15L-25⁰

When we connect Y we have

Iph = IL = 15L-25⁰

Vph = VL/√3

= 489/√3

= 277.128V

Bar Zy = Vph/Iph = 277.128/15L-25⁰

= 18.475L25⁰

For bar Z

15L-25⁰/√3

= 8.6L-25⁰

VL = 480v

480/8.6L-25⁰

= 55.14L25⁰

Please check attachment.

4.5. In a balanced 480 V three-phase system, the line current is measured to be 15 A-example-1
User Robar
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