İA + İB + İC = 0,
.
Z ab = Z bc = Z ca = Z ejφ
.. Zab = Zbc = Zca = Z, φab = φbc = φca = φ.
( ) UAB, UBC, UCA ,
İab = Úab / Z ab; İbc = Úbc / Z bc; İca = Úca / Z ca.
, 120.
İA = İab - İca; İB = İbc - İab; İC = İca - İbc;
.
φ (, , .. φ > 0). , UAB . , √3 . İA İab 30, İB İbc, İC İca.
, .
U = U. I = U / Z, I = 
I, φ = arctg (X / R).
.
Zab ≠ Zbc ≠ Zca. .
, ab , bc -, ca -.
, , . , . .
İab, İbc, İca φab, φbc, φca. .
.
- ;
- x, y, z;
- 1, 2, 3, 4, 5, 6;
- V;
- .
1.
2. . 1.
1
| IA | IB | IC | IAB | IBC | ICA | UAB | UBC | UAC | |
| A | A | A | |||||||
| , | |||||||||
|
|
|
3. . 1.
4. . . 1.
5. 1 3 (2 ). ( 0,1 = 1) ( 50 = 1 ). , 1200. , , . . , ( ) ( ) , .
6. . . , , () , .
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__________ ___________ (_________________)
19. 19 .
:
.
