Simplified Pipe-Type Cable

 Name for Identification

Text

Optional text parameter for identification of the component.

Detailed Graphic Layers

Choice

Select show or hide.

Loss Tangent is Defined At

REAL

Literal

Enter the frequency at which loss tangents are defined [Hz].

Horizontal Translation from Centre

REAL

Literal

Enter the translation of the pipe 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. The x-coordinate of all coax cables included in this pipe must be relative to this depth.

Depth Below Ground Surface

REAL

Literal

Enter the depth of the pipe centre-point below the earth surface [m]. The y-coordinate of all coax cables included in this pipe must be relative to this depth.

Placement in Relation to Ground Plane

Choice

Select Underground or Aerial.

Eliminate Pipe

Choice

Choose whether or not to mathematically eliminate the pipe conductor.

Pipe Number

Choice

Select 1 to 5.

This is a unique pipe number, used for sorting multiple pipes in the same right-of-way.

Pipe Outer Insulator Layer

Choice

Choose whether or not to include an insulating layer between the pipe and ground. Note that if no insulation layer is present, the conductor will be mathematically eliminated.

Eliminate Pipe

Choice

Choose whether or not to mathematically eliminate the pipe conductor.

Insulator Outer Radius

REAL

Literal

Enter the outer radius of the insulator [m].

Insulator Relative Permittivity

REAL

Literal

Enter the relative permittivity of the insulator.

Insulator Loss Tangent

REAL

Literal

Enter the loss tangent of the insulator.

Insulator Relative Permeability

REAL

Literal

Enter the relative permeability of the insulator.

Conductor Outer Radius

REAL

Literal

Enter the outer radius of the conductor [m].

Resistivity

REAL

Literal

Enter the resistivity of the conductor [Wm].

Conductor Relative Permeability

REAL

Literal

Enter the relative permeability of the conductor.

Cable Layers

Choice

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

Cable Configuration

Choice

Select trefoil-touching or trefoil non-touching.

Angle of Cable #1 in Degrees

REAL

Literal

Enter the angle of cable #1 in relation to the vertical starting point [deg].

Cross-Bonding or Conductor Elimination

Choice

Select whether to enable or disable.

Ideal Cross-Bonding/Transposition Is

Choice

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

Cross-Bonding/Transposition 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).

Transposition of 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.

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.

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.

Conductor Inner Radius (Enter 0.0 for Solid)

REAL

Literal

Enter the inner radius of the conductor [m].

Conductor/Sheath/

Armour/Outer Conductor

REAL

Literal

Enter the outer radius or thickness of the corresponding conductor [m]. Depends on Layer Thickness is Specified As.

Insulating Layers

REAL

Literal

Enter the outer radius or thickness of the corresponding insulator [m]. Depends on Layer Thickness is Specified As.

Conductor Property Given As

Choice

Select either DC Resistance or one of the several Resistivity options.

DC Resistance/Resistivity

REAL

Literal

Enter the DC resistance or resistivity of the corresponding conductor [W/km or Wm]. Depends on Conductor Property Given As.

Insulation Property Given As

Choice

Select either Capacitiance or one of the several Relative Permittivity options.

Loss Tangent

REAL

Literal

Enter the loss tangent of the insulator.

Capacitance/Relative Permittivity

REAL

Literal

Enter the capcitance or the relative permittivity of the insulator. Depends on Insulation Property Given As.

Temperature Correction for Conductor Resistances

Choice

Select whether to enable or disable..

Loss Tangent is Defined At

REAL

Literal

Enter the frequency at which loss tangents are defined [Hz].

Relative Permeability

REAL

Literal

Enter the relative permeability of the corresponding conductor or insulator.

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.

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.