master:Line_Tower_Universal parametersPSCAD Universal Tower

Every parameter of the PSCAD Universal Tower (master:Line_Tower_Universal): 109 names, with the unit, the default and the meaning PSCAD gives each one. Copy a name into parameters().

What master:Line_Tower_Universal is

Universal Tower (Line Constants Manual Entry of XY Positions), a component of PSCAD's Master Library, filed under lines, cables and towers.

Definition: master:Line_Tower_Universal
PSCAD name: Universal Tower
Category: Lines, cables and towers
Parameters: 109, in 7 groups; 71 carry a unit
Read from: PSCAD 5.0.0, 2026-11-07

Read and write master:Line_Tower_Universal in Python

import mhi.pscad

pscad = mhi.pscad.connect()              # the PSCAD that is open; launch() starts one
project = pscad.project("my_case")       # a case loaded in the workspace

for comp in project.find_all("master:Line_Tower_Universal"):   # the exact definition, namespace first
    params = comp.parameters()           # every parameter, as PSCAD holds it
    print(str(params["BSP"]))            # Sub-conductor spacing, in m

comp = project.find_all("master:Line_Tower_Universal")[0]
comp.parameters(BSP="0.9144 [m]")        # a value that carries a unit is written with it

A parameter is named exactly as in the table, letter case included: parameters() gives every one of them in a dictionary, and a name the component does not have is refused.
A value that carries a unit comes back as a number whose unit is only in its text, so read it as text first (str(...)) or the unit is lost. PSCAD keeps a written unit as it is given: "2500 [mohm]" stays in mohm.
A Choice is read and written as its symbol (the capitals in "Written as"), not as the words PSCAD shows in the dialog.
find_all() takes the exact definition only. A wildcard or a bare name without master: comes back empty; the Builder's px_find walks the pages for those.

The Builder's runtime does the same with the unit handled for you: px_get(comp, "BSP") and px_set(...), which also records the old value so the case is put back at the end. Getting started shows them.

Conductor Data16
Ground Wire Data14
Phase/Node Connection Information14
Configuration7
Asymmetrical Bundling Position Data30
Conductor Coordinates24
Ground Wires Coordinates4

Conductor Data

Parameter	Unit	Default	Description
`BSP`Real	m	0.4572	Sub-conductor spacingEnter the distance between sub-conductors in the bundle.Range 1E-38 to 100Used when (NCondB>=2)&&(BundSym==0)
`BundSym`Choice	·	SYMMETRICAL	Bundle configuration isSelect whether or not the bundle is symmetrical. If not, then the individual sub-conductor positions must be entered.Written as SYMMETRICAL (symmetrical), ASYMMETRICAL (asymmetrical)Used when NCondB>=2
`CDataType`Choice	·	DIRECT	Data entry methodSelect direct to enter data values within this dialog.Written as FROM_LIBRARY_FILE (from library file), DIRECT (direct)
`CLName`Text	·	..\conductor.clb	Path to conductor library fileEnter the path to the library file, including the filename.Used when CDataType==0
`CName`Text	·	chukar	NameEnter a descriptive name for this conductor type.
`DCResC`Real	ohm/km	0.03206	DC resistance per unit length (entire conductor)Enter the DC resistance of the entire conductor assembly per unit length (i.e. all strands included if stranded) [ohm/km].Range 1E-38 to 100Used when CDataType==1
`Hollow`Choice	·	SOLID_CORE	Conductor style isEnter the style of conductor on this tower. This can be solid core, hollow or stranded.Written as SOLID_CORE (solid core), HOLLOW (hollow), STRANDED (stranded)Used when CDataType == 1
`NCondB`Choice	·	1	Total bundled sub-conductorsEnter the total number of sub-conductors per bundle (maximum 15).Written as 1 = 1, 2 = 2, 3 = 3, 4 = 4, 5 = 5, 6 = 6, 7 = 7, 8 = 8, 9 = 9, 10 = 10, 11 = 11, 12 = 12, 13 = 13, 14 = 14, 15 = 15
`PERMC`Real	·	1.0	Relative permeabilityEnter the relative permeability of the conductor.Range 1E-38 to 1Used when CDataType==1
`RadiusC`Real	m	0.0203454	Outer radiusEnter the outer radius of the conductor assembly. If stranded, then this value is the radius to the edge of the outer strands [m].Range 1E-38 to 10Used when CDataType==1
`RadiusCin`Real	m	0.0	Inner radiusEnter the inner radius of the conductor assembly if hollow style.Range 0 to 10Used when (CDataType==1) && (Hollow==1)
`RadiusS`Real	m	0.003	Strand radiusEnter the radius of a single conductor strand [m].Range 1E-38 to 1E+38Used when Hollow == 2
`SAGC`Real	m	10.0	Sag (all conductors)Enter the sag for all conductors. This is the difference between the height at the tower, to the height mid-span [m].Range 0 to 10000
`SHBund`Choice	·	VISIBLE	Bundle graphic isWritten as HIDDEN (hidden), VISIBLE (visible)Used when NCondB>=2
`num_out_strnd`Integer	·	12	Total number of outer strandsEnter the total number of strands that line the outer circumference of the conductor assembly.Range 1 to 1000Used when Hollow == 2
`num_tot_strnd`Integer	·	19	Total number of strandsEnter the total number of strands that make up the entire conductor.Range 1 to 1000Used when Hollow == 2

Ground Wire Data

Parameter	Unit	Default	Description
`DCResG`Real	ohm/km	2.8645	DC resistance per unit lengthEnter the DC resistance of the conducting material per unit length [ohm/km].Range 1E-32 to 100Used when (GDataType==1)&&(NG>0)
`DCResG2`Real	ohm/km	2.8645	DC resistance per unit lengthEnter the DC resistance of the conducting material per unit length [ohm/km].Range 1E-32 to 100Used when (GDataType==1)&&(NG>1)&&(GWSame==0)
`ElimGW`Choice	·	ENABLED	Ground wire elimination isSelect whether or not to mathematically eliminate the ground wires.Written as DISABLED (disabled), ENABLED (enabled)Used when NG>0
`G2Name`Text	·	1/2_HighStrengthSteel	NameEnter a descriptive name for this ground wire type.Used when (GWSame==0)&&(NG>1)
`GDataType`Choice	·	DIRECT	Data entry methodSelect direct to enter data values within this dialog.Written as FROM_LIBRARY_FILE (from library file), DIRECT (direct)Used when (NG>0)
`GLName`Text	·	..\conductor.clb	Path to ground wire library fileEnter the path to the library file, including the filename.Used when (GDataType==0)&&(NG>0)
`GName`Text	·	1/2_HighStrengthSteel	NameEnter a descriptive name for this ground wire type.Used when NG>0
`GWSame`Choice	·	IDENTICAL	Ground wires areSelect whether or not the ground wires are identical.Written as IDENTICAL (identical), DIFFERENT (different)Used when (NG>1)
`NG`Choice	·	2	Total number of ground wires isSelect the number of ground wires (1 or 2).Written as 0 = 0, 1 = 1, 2 = 2
`PERMG`Real	·	1.0	Relative permeabilityEnter the relative permeability of the conductor.Range 0 to 1Used when (GDataType==1)&&(NG>0)
`PERMG2`Real	·	1.0	Relative permeabilityEnter the relative permeability of the conductor.Range 0 to 1Used when (GDataType==1)&&(NG>1)&&(GWSame==0)
`RadiusG`Real	m	0.0055245	Outer radiusEnter the outer radius of the ground wire [m].Range 0 to 10Used when (GDataType==1)&&(NG>0)
`RadiusG2`Real	m	0.0055245	Outer radiusEnter the outer radius of the ground wire [m].Range 0 to 10Used when (GDataType==1)&&(NG>1)&&(GWSame==0)
`SAGG`Real	m	10.0	Sag (all ground wires)Enter the sag for all ground wires. This is the difference between the height at the tower, to the height mid-span [m].Range 0 to 10000Used when (NG>0)

Phase/Node Connection Information

Parameter	Unit	Default	Description
`NC1`Integer	·	1	Conductor 1 (C1)Enter a number for this conductor to coincide with the external node connection.Range 1 to 30
`NC10`Integer	·	10	Conductor 10 (C10)Enter a number for this conductor to coincide with the external node connection.Range 1 to 30Used when Nc>=10
`NC11`Integer	·	11	Conductor 11 (C11)Enter a number for this conductor to coincide with the external node connection.Range 1 to 30Used when Nc>=11
`NC12`Integer	·	12	Conductor 12 (C12)Enter a number for this conductor to coincide with the external node connection.Range 1 to 30Used when Nc>=12
`NC2`Integer	·	2	Conductor 2 (C2)Enter a number for this conductor to coincide with the external node connection.Range 1 to 30Used when Nc>=2
`NC3`Integer	·	3	Conductor 3 (C3)Enter a number for this conductor to coincide with the external node connection.Range 1 to 30Used when Nc>=3
`NC4`Integer	·	4	Conductor 4 (C4)Enter a number for this conductor to coincide with the external node connection.Range 1 to 30Used when Nc>=4
`NC5`Integer	·	5	Conductor 5 (C5)Enter a number for this conductor to coincide with the external node connection.Range 1 to 30Used when Nc>=5
`NC6`Integer	·	6	Conductor 6 (C6)Enter a number for this conductor to coincide with the external node connection.Range 1 to 30Used when Nc>=6
`NC7`Integer	·	7	Conductor 7 (C7)Enter a number for this conductor to coincide with the external node connection.Range 1 to 30Used when Nc>=7
`NC8`Integer	·	8	Conductor 8 (C8)Enter a number for this conductor to coincide with the external node connection.Range 1 to 30Used when Nc>=8
`NC9`Integer	·	9	Conductor 9 (C9)Enter a number for this conductor to coincide with the external node connection.Range 1 to 30Used when Nc>=9
`NG1`Integer	·	4	Ground Wire 1 (G1)Enter a number for this conductor to coincide with the external node connection.Range 1 to 30Used when (NG>0)&&(ElimGW==0)
`NG2`Integer	·	5	Ground Wire 2 (G2)Enter a number for this conductor to coincide with the external node connection.Range 1 to 30Used when (NG>1)&&(ElimGW==0)

Configuration

Parameter	Unit	Default	Description
`Nc`Choice	·	3	Total number of conductorsEnter the total number of conductors, excluding ground wires (maximum 12).Written as 1 = 1, 2 = 2, 3 = 3, 4 = 4, 5 = 5, 6 = 6, 7 = 7, 8 = 8, 9 = 9, 10 = 10, 11 = 11, 12 = 12
`SHSag`Choice	·	HIDDEN	Graphic of conductor sag isSelect whether or not to diplay conductor sag graphic.Written as HIDDEN (hidden), VISIBLE (visible)
`STL`Choice	·	NONE	GroupingEnable grouping of conductors if you would like to organize them into circuits. This is important for the display of double-circuit line constants in load flow RXB format in the output file.Written as NONE (None), ORGANIZE_CONDUCTORS_INTO_CIRCUITS (Organize conductors into circuits)Used when ((Nc==6) \|\| (Nc==9) \|\| (Nc==12)) && (Transp==1)
`ShuntG`Real	mho/m	1.0E-11	Shunt conductanceEnter a shunt conductance value for all conductors in this tower. Typically this value is around 1e-11 [mho/m].Range 1E-38 to 1
`TName`Text	·	3H5	NameEnter a descriptive name for this tower.
`Transp`Choice	·	ENABLED	Ideal transposition of circuit(s)Select whether or not to ideally transpose the circuit(s). Ideal transposition ensures a perfectly balanced impedance.Written as DISABLED (disabled), ENABLED (enabled)
`X`Real	m	0.0	Relative x-position of tower centreEnter the local horizontal placement of the tower. This value is relational to other towers in this cross-section [m].Range -1E+38 to 1E+38

Asymmetrical Bundling Position Data

Parameter	Unit	Default	Description
`XB1`Real	m	-0.1	Sub-Conductor 1 - X Position
`XB10`Real	m	-0.1	Sub-Conductor 10 - X PositionUsed when NCondB>=10
`XB11`Real	m	-0.1	Sub-Conductor 11 - X PositionUsed when NCondB>=11
`XB12`Real	m	-0.1	Sub-Conductor 12 - X PositionUsed when NCondB>=12
`XB13`Real	m	-0.1	Sub-Conductor 13 - X PositionUsed when NCondB>=13
`XB14`Real	m	-0.1	Sub-Conductor 14 - X PositionUsed when NCondB>=14
`XB15`Real	m	-0.1	Sub-Conductor 15 - X PositionUsed when NCondB==15
`XB2`Real	m	-0.1	Sub-Conductor 2 - X Position
`XB3`Real	m	-0.1	Sub-Conductor 3 - X PositionUsed when NCondB>=3
`XB4`Real	m	-0.1	Sub-Conductor 4 - X PositionUsed when NCondB>=4
`XB5`Real	m	-0.1	Sub-Conductor 5 - X PositionUsed when NCondB>=5
`XB6`Real	m	-0.1	Sub-Conductor 6 - X PositionUsed when NCondB>=6
`XB7`Real	m	-0.1	Sub-Conductor 7 - X PositionUsed when NCondB>=7
`XB8`Real	m	-0.1	Sub-Conductor 8 - X PositionUsed when NCondB>=8
`XB9`Real	m	-0.1	Sub-Conductor 9 - X PositionUsed when NCondB>=9
`YB1`Real	m	0.1	Sub-Conductor 1 - Y Position
`YB10`Real	m	0.1	Sub-Conductor 10 - Y PositionUsed when NCondB>=10
`YB11`Real	m	0.1	Sub-Conductor 11 - Y PositionUsed when NCondB>=11
`YB12`Real	m	0.1	Sub-Conductor 12 - Y PositionUsed when NCondB>=12
`YB13`Real	m	0.1	Sub-Conductor 13 - Y PositionUsed when NCondB>=13
`YB14`Real	m	0.1	Sub-Conductor 14 - Y PositionUsed when NCondB>=14
`YB15`Real	m	0.1	Sub-Conductor 15 - Y PositionUsed when NCondB==15
`YB2`Real	m	0.1	Sub-Conductor 2 - Y Position
`YB3`Real	m	0.1	Sub-Conductor 3 - Y PositionUsed when NCondB>=3
`YB4`Real	m	0.1	Sub-Conductor 4 - Y PositionUsed when NCondB>=4
`YB5`Real	m	0.1	Sub-Conductor 5 - Y PositionUsed when NCondB>=5
`YB6`Real	m	0.1	Sub-Conductor 6 - Y PositionUsed when NCondB>=6
`YB7`Real	m	0.1	Sub-Conductor 7 - Y PositionUsed when NCondB>=7
`YB8`Real	m	0.1	Sub-Conductor 8 - Y PositionUsed when NCondB>=8
`YB9`Real	m	0.1	Sub-Conductor 9 - Y PositionUsed when NCondB>=9

Conductor Coordinates

Parameter	Unit	Default	Description
`XC1`Real	m	-5	Conductor 1 - X Position
`XC10`Real	m	40	Conductor 10 - X PositionUsed when Nc>=10
`XC11`Real	m	45	Conductor 11 - X PositionUsed when Nc>=11
`XC12`Real	m	50	Conductor 12 - X PositionUsed when Nc>=12
`XC2`Real	m	0	Conductor 2 - X PositionUsed when Nc>=2
`XC3`Real	m	5	Conductor 3 - X PositionUsed when Nc>=3
`XC4`Real	m	10	Conductor 4 - X PositionUsed when Nc>=4
`XC5`Real	m	15	Conductor 5 - X PositionUsed when Nc>=5
`XC6`Real	m	20	Conductor 6 - X PositionUsed when Nc>=6
`XC7`Real	m	25	Conductor 7 - X PositionUsed when Nc>=7
`XC8`Real	m	30	Conductor 8 - X PositionUsed when Nc>=8
`XC9`Real	m	35	Conductor 9 - X PositionUsed when Nc>=9
`YC1`Real	m	30	Conductor 1 - Y Position
`YC10`Real	m	30	Conductor 10 - Y PositionUsed when Nc>=10
`YC11`Real	m	30	Conductor 11 - Y PositionUsed when Nc>=11
`YC12`Real	m	30	Conductor 12 - Y PositionUsed when Nc>=12
`YC2`Real	m	30	Conductor 2 - Y PositionUsed when Nc>=2
`YC3`Real	m	30	Conductor 3 - Y PositionUsed when Nc>=3
`YC4`Real	m	30	Conductor 4 - Y PositionUsed when Nc>=4
`YC5`Real	m	30	Conductor 5 - Y PositionUsed when Nc>=5
`YC6`Real	m	30	Conductor 6 - Y PositionUsed when Nc>=6
`YC7`Real	m	30	Conductor 7 - Y PositionUsed when Nc>=7
`YC8`Real	m	30	Conductor 8 - Y PositionUsed when Nc>=8
`YC9`Real	m	30	Conductor 9 - Y PositionUsed when Nc>=9

Ground Wires Coordinates

Parameter	Unit	Default	Description
`XG1`Real	m	-2.5	Ground Wire G1 - X PositionUsed when NG>0
`XG2`Real	m	2.5	Ground Wire G2 - X PositionUsed when NG>1
`YG1`Real	m	40	Ground Wire G1 - Y PositionUsed when NG>0
`YG2`Real	m	40	Ground Wire G2 - Y PositionUsed when NG>1

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