Coaxial Cable

 Name for Identification

Text

Optional text parameter for identification of the component.

 Cable Number

Choice

Select a number between 1 to 12.  This parameter is used for the numbering of multiple cables in the same right of way.

Placement in Relation to Ground Plane

Choice

Choose whether this cable is placed above (Aerial) or below (Underground) the ground plane.

Depth Below Ground Surface

REAL

Literal

Enter the depth of the cable centre below the ground plane surface [m].

Height Above Ground Surface

REAL

Literal

Enter the height of the cable centre above the ground plane surface [m].

Horizontal Translation from Centre

REAL

Literal

Enter the translation of the cable centre-point along the horizontal (x) axis [m]. This value is relative to a local x=0 point, which is derived given the position of all cables in this segment.

Layer Configuration

Choice

Select the configuration of the cable layers. C and I represent conducting and insulating layer respectively.

Layer Thickness is Specified As

Choice

Select the manner in which the layer thicknesses are specified. If radial from centre is selected, enter the distance from the centre-point to the outer radius of the layer.

Detailed Graphic Layers

Choice

Select show or hide.

Ideal Cross-Bonding Is

Choice

Choose whether or not to enable or disable the ideal cross-bonding feature.

Cross-Bonding Group

Choice

Select the group number to which this cable belongs. See Ideal Cross-Bonding for more details.

NOTE:

Each cable group defines a cross-bonded system of three cables. Each cable in the group should have the same set of cross-bonded conductors.  There can be multiple cross-bonded cable groups or a combination of cross-bonded and non cross-bonded cables (ex. a cable system with three cross-bonded and two non cross-bonded cables). Usually in a cross-bonded cable system, only sheaths are transposed at regular intervals. However (if required), any other conductor can also be be transposed.

In some applications, the inner conductor is transposed other than the sheath to obtain a balanced system. This can be accomplished by enabling cross-bonding/transposition of both inner conductor and sheath. In some practical applications, the sheaths at major section points (must consist of three cable sections) of the cross-bonded cable are connected to the ground. This can be approximated by mathematically eliminating the sheath of the three cables in the group (i.e. conductor layer elimination).

Conducting Core/Layers

Choice

Use these options to specify which conductors are to be included in the cross-bonding. See Ideal Cross-Bonding for more details.

Conductor Labelling

Choice

Use these options to provide graphical labels for each conductor in the cable.

Conductors to Eliminate

Choice

Choose which conducting layers to eliminate (if any). Select none to disable conductor elimination. If specify is selected, then you must specify which conductors are to be eliminated in the following parameters.

Resistivity

REAL

Literal

Enter the resistivity of the corresponding conductor [Wm].

Relative Permeability

REAL

Literal

Enter the relative permeability of the corresponding conductor.

 Inner Radius

REAL

Literal

Enter the inner radius of the corresponding conductor.  If this is the central solid conductor, enter 0.0 [m]

Outer Radius

REAL

Literal

Enter the outer radius of the corresponding conductor.

Thickness

REAL

Literal

Enter the thickness of the conducting layer [m]. Note that this parameter is enabled only if Layer thickness is specified as | actual thickness is selected.

Semi-Conducting Layers

Choice

Select whether or not there are semi-conducting layers present in this cable. Semi-conductor layers may only be included between the core and 1st conducting layers.

Relative Permittivity

REAL

Literal

Enter the relative permittivity of the corresponding insulator.

Relative Permeability

REAL

Literal

Enter the relative permeability of the corresponding insulator.

Outer Radius

REAL

Literal

Enter the outer radius of the corresponding insulator [m].

Thickness

REAL

Literal

Enter the thickness of the insulating layer [m]. Note that this parameter is enabled only if Layer thickness is specified as | actual thickness is selected.

Inner Semi-Conductor Layer Thickness

REAL

Literal

Enter the thickness of the inner semi-conducting layer (between insulator and core conductor) [m].

NOTE: This value should not be included as part of the conductor or insulator dimensions. The line constants program will take care of the semi-conductor layer automatically, given this thickness.

Outer Semi-Conductor Layer Thickness

REAL

Literal

Enter the thickness of the outer semi-conducting layer (between insulator and 1st conducting layer) [m].

NOTE: This value should not be included as part of the conductor or insulator dimensions. The line constants program will take care of the semi-conductor layer automatically, given this thickness.