3-Phase Power Factor, Correction

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Last updated 10:37 AM on 5/28/26
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7 Terms

1
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How is the power taken by a single phase load calculated?

P = V x I x Cos angle, or P = V x I x power factor

2
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How can the power consumed be calculated using VP, IP instead of VL, IL?

PT = 3 x VP x IP x Cos angle. compared to PT = -/3 x VL x IL x Cos angle

3
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How to get any value in power formula?

Current for example; power becomes numerator in fraction

<p>Current for example; power becomes numerator in fraction</p>
4
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How is apparent power found using line values in a balanced 3-PH circuit?

Due to being total power equation, -/3 x line values are used. Same with reactive, with Sin / power factor on the end.

<p>Due to being total power equation, -/3 x line values are used. Same with reactive, with Sin / power factor on the end.</p>
5
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How to find phase power in balanced 3-PH load?

PA/PB/PC = PT / 3. This goes for any power values available (S, Q, P)

6
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What two powers is the power factor of a circuit a ratio of?

True, Apparent

<p>True, Apparent</p>
7
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What order to find all power values in circuit?

True power first, then apparent power (true power / cos angle), then reactive power (apparent power x sin angle)