: , ,
:
17
:
. -412
..
12026 97
:
..
. 2015.
. 3
1. . 4
2. . 15
.. 17
1.
U/U | I | % | , tT | |||
110/10 | 3,5 |
2.
tgδ | T0 | tgδ | T0 | R60 | T0 | R60 | T0 | |
1,16 | 22,5 | 1,40 | 17,8 | 22,5 | 24,5 |
1. .
:
U = 10
I = 1000
= 4%
f = 50
t T = 3,5c
.
1.
S= = 370,37 2
, J , J = 2,7.
J :
100 1,2 - 1,8
150 3000 2 2,7
3 - 3,5
:
I. | |||||||||
S. 2 | 1210 2120 | 2120 2135 2150 | 2150 3185 | 3135 3150 | 4150 4175 |
3150 2.
2.
55000
=55,56/2
.
3.
= 10-3=0,73
4. ( 1)
4.1. :
h = (r - 1). C = (14 - 1).4,5 = 58,5
r , r = 8 ÷ 20 ( ), r = 14,
, = 4,5 ( ).
.1
4.2. :
b = (k - 1) a = (6 - 1) 3,5 = 17,5
k , k = 5 ÷ 10 ( ) k =6,
, = 3,5 ( ).
|
|
4.3. :
.2 ( .), m2L, k r D = 0,70 ,
m2 L = 32. 0,73 = 6,57
m , m = 3
.2.
5. :
L = W2D = 282 701,085710-6 =0,059 ,
W :
, . 3, (. .) :
=1,0857
. 3.
:
L p = 100%
L = 94,56%
Δ = L p - L = 5,44% ≈ 5%, , .. Δ = 5%
6. .
.4 ( .) q = 0,25 α = 0,8357 k = 102%. .. k < 105%, , .
. 4.
7. :
P = I 2 R k = 10002 0,003 0,136 = 408 =0,408,
R .
ρ75 t0 = 750C
2 10-3 =0,136
3. 0 =32,5
q = (1,15÷1,5).10-2S = 1,310-2150 = 1,95
Kp = 1 ( ),
= 0,37 ( ).
8. :
P = N P = 12 15 = 180 = 0,18 ,
N , , 12,
P , 1,5 .
9. , 10%
= 10 .408 /100 = 40,8 = 0,0408
10. :
∑ = + + = 0,408+ 0,18 + 0,0408 = 0,6288
11. - .
Q = Q + 100. k τ = 40 + 100. 1,096 . (1000/3. 452)2 = 140,59 0 ,
kτ = (0,57 . D 1)/(D 1 2,1 N) = (0,57. 52,5)/(52,5-2,1.12) = 29,92/23,1 = 1,096
D 1 = D b = 70 17,5= 52,5 ,
11.2 ( .), = 452, Q 0 = 400C.
12. , .
. .
P = (I W)2Ψ = (63,64.28)2.0,01 =23814
I = = 25 = 63,64 ,
, Ψ .11.19 () ( .), Ψ = 0,01 /
= 1255/0,70 = 1857
= 1300
= + l 3
.. , I D
10 1000 0,14, D =865 .
13.
= (I . W)2 Ψ = (63,64.28)2. 0,01 =7938
14. . ( .., . 344) 10 1000 0,14 :
m = 1120.
G = m.g = 1120 . 9,8 = 10976
g = 9,8 /2
15. .
-10-3,75 = 3750 ( .. .282). :
|
|
= 253 < = 3750
.
16. (.2), [ .., .349].