. 85
:
Po = 160 ( 85)
10 51-31-3 3-
.. = 40 ( 85 )
η = 91 %;
cos φ = 0,92
:
)
- 85:
I = Po × 103 / (√3 × 380 × cos φ × η)
I = 160 × 103 / (√3 × 380 × 0,92 × 0,91) = 160 × 103 / 551 = 0,29038.. × 103 = 290,38
I = 290,38 ≈ 290,4 ()
- 85:
85 4 114 54 2 55 37
(I) = 400 / 320 IP 21 / 300 IP 54 2
) (SF)
1.
55 37 (SF .) :
I.. ≥ 1,1 × I => 1,1 × 290,4 = 319,44 ()
2. 55 37,
. . I.. ≥ I., 55 37 3 :
I.. = 400
I. 0,63 I.. (252) 0,8 I.. (320) 1,0 I.. (400)
I. = 400
= 1,25
() = 2,3,5,7,10
I = 20
3. (I()):
I() = 1,25 × I. => 1,25 × 400 = 500 ()
4. (I):
I ≥ 1,25 × I => 1,25 × 582,4 = 728 ()
5. ():
≥ I / I. => 728 / 400 = 1,82, = 2;
6. (I()):
I() = 2 × I. => 3 × 400 = 800 ()
) 85:
1. (I..) :
I.. = .. × 103 / (√3 × 380 × cos φ × η)
I.. = 40 × 103 / (√3 × 380 × 0,92 × 0,91) = 40 × 103 / 551 = 0,0725... × 103 = 72,59
I.. = 72,59 ≈ 73 ()
2. :
I.. = × I.., = 5 => 5 × 73 = 365 ()
3. (I) :
I = I.. + I ̶ I. => 365 + 290,4 ̶ 73 = 582,4 ()
4. (I.):
I.. ≥ × I(), = 1,25( - ) => I.. = 1,25 × 500 = 625 ();
5. (I..)
( 3- ): I.. = 625 / 3 = 208,33
6. :
3 × 70, I.. = 210 702
|
|
|
I. = 3 × 210 = 630
) (SF 1)
1.
51 31 - 3 (SF 1 .) :
I.. ≥ 1,25 × I => 1,25 × 73 = 91,25 ()
2. 51 31 - 3,
. . I.. ≥ I., 51 31 - 3 :
I.. = 100
I. 80, 100
I. = 100
() = 1,25
() =
I = 7
3. (I()):
I() = 1,25 × I. => 1,25 × 100 = 125 ()
4. (I):
I ≥ 1,25 × I.. => 1,25 × 365 = 456,25 ()
5. ():
≥ I / I. => 456,25 / 100 = 4,56, = 5;
6. (I()):
I() = 5 × I. => 5 × 100 = 500 ()
) ():
1. (I.):
I.. ≥ × I(), = 1,25( -
) => I.. = 1,25 × 125 = 156,25 ≈ 157 ();
2. (I..)
( 3- ): I.. = 157 / 3 = 52,33 ≈ 53 ()
3. :
3 × 16, I.. = 60 162
I. = 3 × 60 = 180
:
:
85 4 114 54 2 55 37 , (I) : 400 / 320 IP 21 / 300 IP 54 2
: 55 37 3 I. = 400 ();
I() = 500 ();
I() = 800 ();
: 51 31 3 I. = 100 ();
I() = 125 ();
I() = 500 ();
: 3 × 70,
I. = 3 × 210 = 630 ()
: 3 × 16
I. = 3 × 60 = 180 ()
