master:peswitch parametersPSCAD Power Electronic Switch
Every parameter of the PSCAD Power Electronic Switch (master:peswitch): 21 names, with the unit, the default and the meaning PSCAD gives each one. Copy a name into parameters().
What master:peswitch is
Power Electronic Switch (Power electronic switch), a component of PSCAD's Master Library, filed under faults and switching.
- Definition
master:peswitch- PSCAD name
- Power Electronic Switch
- Category
- Faults and switching
- Parameters
- 21, in 3 groups; 8 carry a unit
- Read from
- PSCAD 5.0.0, 2026-11-07
Read and write master:peswitch 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:peswitch"): # the exact definition, namespace first
params = comp.parameters() # every parameter, as PSCAD holds it
print(str(params["CD"])) # Snubber Capacitance, in uF
comp = project.find_all("master:peswitch")[0]
comp.parameters(CD="0.1 [uF]") # 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 withoutmaster:comes back empty; the Builder'spx_findwalks the pages for those.
The Builder's runtime does the same with the unit handled for you: px_get(comp, "CD") and px_set(...), which also records the old value so the case is put back at the end. Getting started shows them.
Internal Output Variables
| Parameter | Unit | Default | Description |
|---|---|---|---|
AlphaText | · | · | Alpha in Seconds |
GammaText | · | · | Gamma in Seconds |
IText | · | · | Current in Device (snubber excluded) |
ItText | · | · | Total Current in Device |
ToffText | · | · | Time of Last Turn off |
TonText | · | · | Time of Last Turn on |
VText | · | · | Voltage Across the Device |
Main Data
| Parameter | Unit | Default | Description |
|---|---|---|---|
CDReal | uF | 0.05 | Snubber CapacitanceAt least 0.001Used when (SNUB==1) |
EBOReal | kV | 1.0E5 | Forward Breakover VoltageAt least 1 |
EFVDReal | kV | 0.0 | Forward Voltage DropRange 0 to 10 |
ErwReal | kV | 1.0E5 | Reverse Withstand VoltageAt least 1 |
PFBChoice | · | NO | Protected against Forward Breakover?If protected, the device will turn on before the breakdown protecting it from permanent failureWritten as NO (No), YES (Yes) |
RDReal | ohm | 5000.0 | Snubber ResistanceAt least 0.001Used when (SNUB==1) |
ROFFReal | ohm | 1.0E6 | Thyristor OFF ResistanceAt least 1 |
RONReal | ohm | 0.01 | Thyristor ON ResistanceAt least 0 |
TEXTReal | us | 0.0 | Minimum Extinction TimeRange 0 to 1000 |
Configuration
| Parameter | Unit | Default | Description |
|---|---|---|---|
INTRChoice | · | YES | Interpolated Pulse?Select Yes if the input pulses contain interpolation informationWritten as NO (No), YES (Yes)Used when Type != 0 |
LText | · | T | Device Label (optional)Optional label |
NameText | · | · | Name for IdentificationEnter a name for identification |
SNUBChoice | · | YES | Enable Snubber Circuit?Select Yes or No to enable/disable snubber circuitWritten as YES (Yes), NO (No) |
TypeChoice | · | THYRISTOR | Device TypeSelect the type of power electronic deviceWritten as DIODE (Diode), THYRISTOR (Thyristor), GTO, IGBT, TRANSISTOR (Transistor) |
Related
← master:switch Isolation Switch · master:var_pot Rotary Switch →