:
U= ∙U. (3.5)
- , .
. 3.2.
. 3.2, , ..
U=U. (3. 6)
za :
iA+icz-iax=0.
iA, :
iA=iax-icz.
xb cy
iB=iby-iax , iC=icz-iby.
:
I A= I ax- I cz, I B= I by- I ax, I C= I cz- I by. (3. 7)
.
, , :
I= ∙I. (3.8)
, , .
, - , - , .
:
P=Pa+Pb+Pc. (3.9)
, :
P=U∙I∙Cos . (3.10)
, , :
P=3P . (3.11)
, , - .
, , , - . .
1. , .3.3.
2. 3.1. . 3.
3. 0-150 .
4. 0-1 .
5. .
6. , , . .
7. , , , , 0 - . .
|
|
8. 3.2.
V |
a |
x |
V |
c |
z |
V |
b |
y |
V |
A |
B |
C |
O |
. 3.3. ,
V |
A |
B |
C |
V |
b |
y |
V |
a |
x |
V |
c |
z |
V |
A |
B |
C |
a |
x |
c |
z |
b |
y |
W |
U* |
U |
I* |
2,5 |
W |
U |
U* |
I* |
5 |
. 3.5.
3.2
, ,
UBC | Uax, | Uby, | Ucz, | Iax, | Iby, | Icz, | IN, | Pa, | Pb, | Pc, | P, | |||
9. .
10. (. 3.3.) ,
z 0.
11. 0-300 .
12. 6-7.
13. 3.3.
14. .
15. , . 4.3.
16. 6-7.
17. 3.4.
3.3
, ,
UBC | Uax, | Uby, | Ucz, | Iax, | Iby, | Icz, | Pa, | Pb, | Pc, | P, | |||
3.4
, ,
IA, A | Iax, A | Iby, A | Icz, A | UBC, | Uax, | Uby, | Ucz, | Pa, | Pb, | Pc, | P, | |
18. .
19. , . 3.5. , I*, U*, 2.5, U .
20. 0-750 .
21. 6-7.
22. 3.5.
|
|
3.5
,
1, | 2, | , |