() .. . | . 19.. 19.. 19..... | .. . |
... .. ... . | 5%.... 50 |
=... =. i0=.... u =... | + 15% + 10% % + 30% % 10% |
D.... .n .. () .................................. ., 0,35 充, |
..
1
. ... .. 1192066............ | 1000 10 000 + 5%/400 Y/ |< 0 50 |
.. 酅. . ()... .. 腅. 充.. | D = 245 n= 6 = 700 , 330, 0,35 , , |
2
. ... .. 腅 | 2500 35000 + 2x2,5%/6300 Y/Δ 11 50 1192066 |
.. 酅. . ()... .. 腅. 充.. | D = 300 n= 7 = 1000 , 330, 0,35 , , |
18.3 .
1000 , 10
.
. , (. 18.1).
, . 14.1. , :
|
|
1 = 0,955245 = 234 2 = 0,87 245 = 213 3 = 0,77245 = 188 4 = 0,64245 = 157 5 = 0,495245 = 121 6 = 0,3245 = 73 | 230 215 195 155 120 75 |
18.1
b , D = 245 . :
( , . ). 3 0,93, 0,35 (. . 11.1).
:
1 2 3 4 5 6 | 23,0 8,4 = 193 2 21,5 3,4 = 73 2 19,5 3,0 = 58,5 2 15,5 4,2 = 65 2 12,0 2,4 = 28,8 2 7,5 2,0 = 15 2 |
F = 433,3 2 |
F=KF=0.93433.3 = 403 2
F=0.93(193+73) = 247 2.
. , . . 5% .
, . . h1, , 15%:
h1=1.15 F/b=1.15433.3/234=21.3, 21,5 .
0,8 h1 . , h2 = 0,8-21,3 = 17,1, 17,5 .
F=K((b1+2b2)h1+2(b3+b4+b5+b6)h2)=0.93((8.4+3.4)21.5+(3.0+4.2+2.4+2.0)17.5)=
=0.93(254+203)=425 2
K = (F - F ) / F = (425 403) / 403 = 0,055 5,5%.
. ew. = 1,7 ,
eω = 222 BFCT 10-4=2221,740310-4=15,2 .
. ,
U = U/√3
ω= U/eω= U/√3eω=
=400/(√315,2)=15,2 16 .
ω= ω (U/U)= ω (U√3/ U √3)=16(10000/400)=400 .
(5%)
ω = 0,05 ω = 0,05400 = 20 .
420 400 380/16 .
,
= U104/ ω222FCT=400104/(√316222403)=1,615 .
=(F/ F)=1,615(403/425)=1,53 .
.
I = I
I= I =S103/ (U √3)=1000103/(√3400)=1445a;
I= I =S103/ (U √3)=1000103/(√310000)=57,7a.
( ). 1600 690 , . , .
I. , . 44,5 /2.
S= I/ δ=1445/4,5=3,21 2.
, . 12,55,5 67,8 2 5 ,
|
|
S = 5 67,8 = 339 2.
δ=1445/339=4,26 /2.
=(b+0.55)n(ω/2+1)1,03=(12,5+0,55)5(16/2+1)1,03=605 ,
b=12,5 , ;
n=5 ;
1,03 , .
a1= (a+0,55+1)2+ak=(5,5+0,55+1)2+5=19,1 ,
=5,5 , ;
l , ;
ak=5 , .
1=20 .
II. , . 3,54 /2.
S= I/ δ=1445/4=3,60 2.
605: (16+ 1) = 35,7 .
( ) .
12,53,28 40,5 2 10 .
δ=1445/(1040,5)=3,57 /2.
:
2(16+1) (12,5 + 0,5) 32 5 1 () 12,5 | =442 =160 =12,5 |
614,5 9,5 605 |
(9,5/172,5)100 = 5,5%.
:
a1= ω (a+0,5)1,03=5(3,28+0,5)1,03 = 19,5 .
:
D=245 5 20 | D=245 5 5 6 19,5 |
, II , , I .
( ). .
3,54 /2.
S= I/ δ=57,5/4=14,5 2
3.3 42 . 42 1 ( ) 605: 42 = 14,4 .
6 14,4 6 = 8,4 .
8x1,81 14,4 2.
δ=57,7/14,4=4,01 /2.
: 42 4 (10 %) , :
38 10 = 380
4 10 =40
42 = 420 .
:
42 8,5 36 6 1 12 4 8 | =357 =216 =12 =32 |
=617 12 | |
=605 |
12 / (216+12 + 32)100 = 4,6%,
(46%).
2 = ω(+ 0,5)1,03= 10(1,81 +0,5)1,03 = 23,8 ,
ω = 10 ;
1,03 .
2 = 24 .
():
D=245 5 20 17 24 |
(17 ) UP
(UK = 5,5%)
.
5%,
( up'')
.
Dcp=29,5+1,7=31,2 , .
|
|
= 1,7+(2+2,4)/3=3,17 , .
= 1-(1,7+2+2,4)/π60,5 = 0,968;
=400/(√316) = 14,4 .
up, up, .
. . = 17 + 18 = 35 .
18.2 , .
:
D = 245 5 20 15 5 15 24 |
22 413+22=435 .
() , 50 :
= + 2-50 = 605 + 100 = 705 .
, , . 18.2.