Cableizer
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System frequency

The system frequency of a cable is limited to the choices below. However, when laid in a project, the frequency of every cable system can be chosen arbitrary.

Symbol
$f$
Unit
Hz
Used in
$D_{eq}$
Equivalent diameter of a group of round objects [mm]
$\lambda_{21}$
Loss factor of armour by circulating currents
$\lambda_{22}$
Loss factor of armour by eddy currents
$\lambda_3$
Loss factor of steel pipes for pipe-type cables
$\lambda_4$
Loss factor of magnetic steel ducts
$\omega$
Angular frequency [rad/s]
$p_{soil}$
Depth of image source
$x_p$
Factor for proximity effect of conductors
$x_s$
Factor for skin effect on conductor
$z_c$
Factor z to calculate skin effect coefficients for conductor
$z_{encl}$
Factor z to calculate skin effect coefficients for enclosure
Choices
Frequency
0 Hz
16.7 Hz
25 Hz
50 Hz
60 Hz