Every parameter of the PSCAD Three Phase Fault (master:tpflt): 16 names, with the unit, the default and the meaning PSCAD gives each one. Copy a name into parameters().
What master:tpflt is
The three phase fault: a fault branch between the phases and to ground, drawn into the case. Which phases are faulted and to what is set here; when it is applied comes from the logic wired to it, usually a Timed Fault Logic, because this component has no time parameters of its own.
Definition
master:tpflt
PSCAD name
Three Phase Fault
Category
Faults and switching
Parameters
16, in 5 groups; 3 carry a unit
Read from
PSCAD 5.0.0, 2026-11-07
Most used master:tpflt parameters
Parameter
Unit
Description
A
·
Is Phase A in Fault?phase A in the fault, YES or NO
B
·
Is Phase B in Fault?
C
·
Is Phase C in Fault?
G
·
Is this Fault to Neutral?to ground
RON
ohm
Fault ON Resistancethe fault resistance while it is on
Ctype
·
Fault Type ControlINTERNAL uses A, B, C and G; EXTERNAL takes the phases from a signal
Read and write master:tpflt 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 workspacefor comp in project.find_all("master:tpflt"): # the exact definition, namespace first
params = comp.parameters() # every parameter, as PSCAD holds itprint(str(params["A"])) # Is Phase A in Fault?
comp = project.find_all("master:tpflt")[0]
comp.parameters(A="NO") # a Choice is written as its symbol
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, "A") and px_set(...), which also records the old value so the case is put back at the end. Getting started shows them.