, 7.4.
[ (7.4)]
, [ (7.5)]
.
[ (7.6)]
[ (7.7)]
H1 = 48,5 + 36 +112= 64 = 6,4 ( 5%),
=(B-b)/2=(72-23.4)/2=24.3 ;
, ;
b , ;
;
m = 4.
Foc ( BH) F'oc Foc [ (7.8)]
Foc= F'oc + Foc=4,8+8=12,8 .
F0CK= 12,8700 = 8950 .
sp = nca2 = 842,4 = 77 2,
n ;
, = 40 = 4 ,
2 .
δ= F0CK/ sp=8950/77=116 /2,
.
2500 35
. D = 300 = 7 , . : c1 = 295; 2 = 270; 3 = 250; 4 = 230; 5 = 215; 6 = 175; 7 = 135 .
:
:
1 2 3 4 5 6 7 | 29,5 X 1,8= 53,1 2 27,0 X 11,2=302,5 2 25,0 X 3,6 = 90,0 2 23,0 X 2,6= 59,8 2 21,5 X 1,6= 34,4 2 17,5 3,6= 63,0 2 13,5 2,4 = 32,4 2 |
F | =635,2 2 |
Fc=KF=0,93635,2=5902
. , . (7-) 6- .
,
F= K[F+(c6-c7)2b7]=0.93[635.2+(17.5-13.5)2.4]=600 2.
.
eω=222BFc10-4 = 222 1,7 590 10-4 = 22,3 .
U = U.
ω= U/ eω= U/ eω=6300/22,3=282 .
U = U/√3.
ω= ωU/ U= ωU/ √3U=28235000/(√36300)=904
(2,5%)
ω=0,025 ω=0,025904=22,6 .
23 22 .
: 949-927-904-881-859/282 .
= U104/(ω222 Fc)=6300104/(282222590)=1,7
= Fc/ F=1,7590/600=1,67 .
|
|
. I=I/√3.
I= I/√3=S103/(3 U)=2500103/(36300)=132 a.
I=I
I= I=S103/(√3 U)= 2500103/(√33500)=41,2 .
( ). .
3,54 /'2.
S= I/δ=132/4=332.
10,8 3,28 , 34,9 2.
δ=132/34,9=3,78 /2
= 2l= 1000 275 = 850 .
(6 )
10,8 + 0,5+6 = 17,3 .
850: 17,3 ≈ 49, 48 .
:
48 11,3 44 6 3 X 12 | =542 =264 =36 |
=842 -17 | |
=825 |
17100/(264+36)=5,7%
;
42 X 6 = 252 6 5 = 30 |
48 = 282 . |
( ). .
S= I/δ=41,2/4=10,3 2.
5,9 1,81 , 10,5 2.
δ=41.2/10.5=3.92 /2,
() ( )
5,9 + 0,5+ 6= 12,4 .
825: 12,4 = 67, 68 .
2x2,5% . , 60 8 .
:
41 X 14 19 15 | =574 =285 |
=859 | |
6 11 2 X 12 | =66 =24 |
68 | =949 . |
:
68 6,4 66 6 1 X 16 | =435 =396 =16 |
=847 22 | |
=825 |
22100/(396+16)=5,3%
al = ωK (a +0,5) 1,03 = 6(3,28 + 0,5)1,03 = 23,4 , a1= = 24 .
:
2= 15(1,81 + 0,5) 1,03 = 35,7 , 2 = 36 .
():
D = 300 5 310 5 8 24 27 36 |
(27 ) u. u = 6,5% :
ua=PK/10S=23500/(102500)=0,94%
5%
up= up/1,05=6,44/1,05=6,13%
,
Dcp=38,4+2,7=41,1,
Δ=2,7+(2,4+3,6)/3=4,7 ,
=1-(2,7+2,4+3,6)/(π82,5)=0,966.
u" u ', .
. .
= 27 + 13 = 40 .
:
|
|
D = 300 5 310 5 320 8 336 24 18 420 6 432 16 464 36 536 34 = 570 |
570 .
, 75 :
= + 2 75 = 825 + 150 = 975 .
.