3 phase transformers

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l4, t5

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22 Terms

1
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line connection, line to line

delta

2
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neutral connection, phase

star

3
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VAN

phase voltage

4
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VAB

line voltage

5
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IA

phase current

6
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IAB

line current

7
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Van = Vab / root 3 < -30

phase voltage

8
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Vab = root 3 (Van ) < 30

line voltage

9
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Ia = Van / Zan

phase current

10
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Iab = Vab / Zab

line current

11
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S = VI*

complex power

12
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S = VI other form

S = P+jQ

13
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S

complex power

14
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P

real power

15
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Q

reactive power

16
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W (watts)

real power

17
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VA (volt amps)

complex power

18
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VAr (volt ampere reactive)

reactive power

19
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20
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22
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