Проектирование кабельных линий связи. Воронков А.А - 17 стр.

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4.2. 1< 13!  1 1& #
4.2.1.   
     :
(
)
( )
(4.1)
"/ ,
)(1
)(
)(1
2
00
2
00
00
R
adkrH
adkrG
krFRR +
++=
& R
0
    , 13  -
:
2
0
3
0
108
d
R
π
χρ
=
, /
;
σ
ρ
1
=
- 2   , " 
2
/, (#. 4.2);
d
0
-  , ;
χ
- 7 , 13%4 1 3   1<
,  3 1,01.....1,02;
- 7, 13%4   !3  ! 
 7 &3,  <  =5;
-       3 (3.4), ;
r
0
-  4 3, : r
0
= d
0
/2, ;
- 7 !3! : =
ωµ σ
, 
-1
(#. 4.2);
µ
- #% & 2,
µ
µ
µ
=
0
, /;
µ π
0
7
4 10=
, /;
µ
- 2 & 2;
F(kr
0
), G(kr
0
), H(kr
0
) - , 13%4   !3 
 !& 7 7 #, 1 3! -
3 #. 4.3
4.2.           1<                     1 3!                                1                       1        &         #

4.2.1.

                                                                                                                          :
                                                              G(kr0 )(d0 a)
                                                                                    2

                      R = R0 1 + F (kr0 ) +                                    + R“ , " /                                     (4.1)
                                                           1 − H (kr0 )(d0 a)
                                                                             2


 &            R0 –                                                                            ,            1 3                              -
     :
                                                          8 ⋅ 103 χρ ,          /
                                                 R0 =                                    ;
                                                              πd 02
           1
ρ=                -           2                                                           ,"               2
                                                                                                               / , ( # . 4.2);
          σ
           d0 -                              ,        ;
              χ       -       7                                 , 1 3 %4                              1                   3                1<
               ,                             3 1,01.....1,02;
               -          7               , 1 3 %4                                             !          3                           !
          7                             &   3,     <                                          =5;
            -                                                                                              3 (3.4),           ;
          r0 -                                            4          3,       : r0 = d0/2,                  ;
              -       7                           !       3!         : =      ωµ σ ,                      -1
                                                                                                               ( # . 4.2);
          µ - #                   %              &                                  2,

                                  µ = µ 0µ ,                   / ;         µ 0 = 4π ⋅10 − 7 ,                            / ;
          µ-                           2              &                                  2;
         F(kr0), G(kr0), H(kr0) -                                , 1 3 %4                                            !        3
                        !        & 7                                7    #                            ,          1                    3!    -
           3     # . 4.3




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