master:rms3ph parametersPSCAD Three Phase RMS Meter
Every parameter of the PSCAD Three Phase RMS Meter (master:rms3ph): 8 names, with the unit, the default and the meaning PSCAD gives each one. Copy a name into parameters().
What master:rms3ph is
The three phase RMS meter, analog or digital, per-unitised on a rated voltage.
- Definition
master:rms3ph- PSCAD name
- Three Phase RMS Meter
- Category
- Meters and output
- Parameters
- 8, in 1 group; 4 carry a unit
- Read from
- PSCAD 5.0.0, 2026-11-07
Most used master:rms3ph parameters
| Parameter | Unit | Description |
|---|---|---|
Scale | kV | Rated Voltage for Per-Unitizing (L-L,RMS)rated voltage for per-unitising |
freq | Hz | Fundamental Frequencyfundamental frequency |
Type | · | Meter Typeanalog or digital |
Ts | s | Smoothing Time Constantsmoothing time constant |
Read and write master:rms3ph 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:rms3ph"): # the exact definition, namespace first
params = comp.parameters() # every parameter, as PSCAD holds it
print(str(params["Scale"])) # Rated Voltage for Per-Unitizing (L-L,RMS), in kV
comp = project.find_all("master:rms3ph")[0]
comp.parameters(Scale="460 [kV]") # 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, "Scale") and px_set(...), which also records the old value so the case is put back at the end. Getting started shows them.
Configuration
| Parameter | Unit | Default | Description |
|---|---|---|---|
NSAMInteger | · | 64 | Number of Samples in a CycleRange 8 to 256Used when Type==1 |
NameText | · | · | Name for IdentificationEnter a name for identification |
ScaleReal | kV | 230.0 | Rated Voltage for Per-Unitizing (L-L,RMS)At least 1E-38 |
TsReal | s | 0.02 | Smoothing Time ConstantAt least 0Used when Type==0 |
TypeChoice | · | ANALOG | Meter TypeWritten as ANALOG (Analog), DIGITAL (Digital) |
ViewChoice | · | SINGLE_LINE | Connected to a Node Loop With:Written as 3_PHASE (3 Phase View), SINGLE_LINE (Single Line View) |
VinitReal | kV | 0.0 | Initial Voltage (L-L, RMS)At least 0Used when Type==1 |
freqReal | Hz | 60.0 | Fundamental FrequencyAt least 0Used when Type==1 |
Related
- All 345 definitions in the component reference
- Build and run a PSCAD case from Python
- PSCAD automation with Python: getting started
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