master:umec-xfmr-6w5L parametersPSCAD 3/5 Limb UMEC Transformer

Every parameter of the PSCAD 3/5 Limb UMEC Transformer (master:umec-xfmr-6w5L): 106 names, with the unit, the default and the meaning PSCAD gives each one. Copy a name into parameters().

What master:umec-xfmr-6w5L is

3/5 Limb UMEC Transformer, a component of PSCAD's Master Library, filed under transformers and reactors.

Definition
master:umec-xfmr-6w5L
PSCAD name
3/5 Limb UMEC Transformer
Category
Transformers and reactors
Parameters
106, in 11 groups; 28 carry a unit
Read from
PSCAD 5.0.0, 2026-11-07

Read and write master:umec-xfmr-6w5L 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:umec-xfmr-6w5L"):   # the exact definition, namespace first
    params = comp.parameters()           # every parameter, as PSCAD holds it
    print(str(params["CuL"]))            # Copper Losses, in pu

comp = project.find_all("master:umec-xfmr-6w5L")[0]
comp.parameters(CuL="1 [pu]")            # 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, "CuL") and px_set(...), which also records the old value so the case is put back at the end. Getting started shows them.

Configuration

ParameterUnitDefaultDescription
CoreChoiceยท3_PHASE_BANKTransformer Core ConstructionWritten as 3_PHASE_BANK (3 Phase Bank), THREELIMB (Three-limb), FIVELIMB (Five-limb)
CuLRealpu0.0Copper LossesRange 0 to 1
DtlsChoiceยทNODisplay Details?Written as NO (No), YES (Yes)Used when View!=0
LeadChoiceยทLAGSDelta Lags or Leads YWritten as LAGS (Lags), LEADS (Leads)Used when YD1!=YD2
NLLRealpu0.0No Load LossesRange 0 to 1
NameTextยทT1Transformer Name
SatChoiceยทNOModel Saturation?Written as NO (No), YES (Yes)
TapChoiceยทNONETap Changer WindingWritten as NONE (None), _1 (#1), _2 (#2)
TmvaRealMVA100.0Transformer MVAAt least 1E-06
V1RealkV230.0Primary Voltage (Line-Line, RMS)At least 0.0001
V2RealkV230.0Secondary Voltage (Line-Line, RMS)At least 0.0001
ViewChoiceยทCIRCLESGraphics DisplayWritten as 3_PHASE_VIEW (3 phase view), CIRCLES (Single line (circles)), WINDINGS (Single line (windings))
XlRealpu0.10Leakage ReactanceAt least 1E-307
YD1ChoiceยทYWinding #1 TypeWritten as Y, DELTA (Delta)
YD2ChoiceยทDELTAWinding #2 TypeWritten as Y, DELTA (Delta)
fRealHz60.0Base Operation FrequencyAt least 0.0001

Saturation Curve

ParameterUnitDefaultDescription
EnabIntegerยท0Enable SaturationRange 0 to 1Used when (Sat==1)
Im1Real%2.0Magnetizing Current at Rated VoltageRange 0.0001 to 50Used when (Sat==0)
X10EReal%124.388Point 10 - Current as a PercentageRange 0 to 1000Used when (Sat==1)
X1EReal%0.0Point 1 - Current as a PercentageRange 0 to 1000Used when (Sat==1)
X2EReal%.1774Point 2 - Current as a PercentageRange 0 to 1000Used when (Sat==1)
X3EReal%.487637Point 3 - Current as a PercentageRange 0 to 1000Used when (Sat==1)
X4EReal%.980856Point 4 - Current as a PercentageRange 0 to 1000Used when (Sat==1)
X5EReal%2Point 5 - Current as a PercentageRange 0 to 1000Used when (Sat==1)
X6EReal%3.09543Point 6 - Current as a PercentageRange 0 to 1000Used when (Sat==1)
X7EReal%6.52348Point 7 - Current as a PercentageRange 0 to 1000Used when (Sat==1)
X8EReal%20.357Point 8 - Current as a PercentageRange 0 to 1000Used when (Sat==1)
X9EReal%60.215Point 9 - Current as a PercentageRange 0 to 1000Used when (Sat==1)
Y10ERealpu1.49469Point 10 - Voltage in puRange 0 to 1000Used when (Sat==1)
Y1ERealpu0.0Point 1 - Voltage in puRange 0 to 1000Used when (Sat==1)
Y2ERealpu.324129Point 2 - Voltage in puRange 0 to 1000Used when (Sat==1)
Y3ERealpu.61284Point 3 - Voltage in puRange 0 to 1000Used when (Sat==1)
Y4ERealpu.825118Point 4 - Voltage in puRange 0 to 1000Used when (Sat==1)
Y5ERealpu1.0Point 5 - Voltage in puRange 0 to 1000Used when (Sat==1)
Y6ERealpu1.08024Point 6 - Voltage in puRange 0 to 1000Used when (Sat==1)
Y7ERealpu1.17334Point 7 - Voltage in puRange 0 to 1000Used when (Sat==1)
Y8ERealpu1.26115Point 8 - Voltage in puRange 0 to 1000Used when (Sat==1)
Y9ERealpu1.36094Point 9 - Voltage in puRange 0 to 1000Used when (Sat==1)

Winding 1 Delta Currents

ParameterUnitDefaultDescription
IAB1TextยทยทName for A to B Winding Current [kA]
IBC1TextยทยทName for B to C Winding Current [kA]
ICA1TextยทยทName for C to A Winding Current [kA]

Winding 2 Delta Currents

ParameterUnitDefaultDescription
IAB2TextยทยทName for A to B Winding Current [kA]
IBC2TextยทยทName for B to C Winding Current [kA]
ICA2TextยทยทName for C to A Winding Current [kA]

Winding 1 Line Currents

ParameterUnitDefaultDescription
ILA1TextยทยทName for Phase A Current (+in) [kA]
ILB1TextยทยทName for Phase B Current (+in) [kA]
ILC1TextยทยทName for Phase C Current (+in) [kA]

Winding 2 Line Currents

ParameterUnitDefaultDescription
ILA2TextยทยทName for Phase A Current (+in) [kA]
ILB2TextยทยทName for Phase B Current (+in) [kA]
ILC2TextยทยทName for Phase C Current (+in) [kA]

Tap Setting

ParameterUnitDefaultDescription
aRealยท1.0Tap SettingRange 0.1 to 1.9Used when (Tap > 0)

PU Transformer Flux (Five Limb)

ParameterUnitDefaultDescription
lfykffTextยทยทYoke Flux (Red-Yellow)
pwlbbfTextยทยทWinding 1 Flux (Blue-phase)
pwlbrfTextยทยทWinding 1 Flux (Red-phase)
pwlbyfTextยทยทWinding 1 Flux (Yellow-phase)
pwlkbfTextยทยทWinding 1 Leakage Flux (Blue-phase)
pwlkrfTextยทยทWinding 1 Leakage Flux (Red-phase)
pwlkyfTextยทยทWinding 1 Leakage Flux (Yellow-phase)
rtykffTextยทยทYoke Flux (Blue-Yellow)
swlbbfTextยทยทWinding 2 Flux (Blue-phase)
swlbrfTextยทยทWinding 2 Flux (Red-phase)
swlbyfTextยทยทWinding 2 Flux (Yellow-phase)
swlkbfTextยทยทWinding 2 Leakage Flux (Blue-phase)
swlkrfTextยทยทWinding 2 Leakage Flux (Red-phase)
swlkyfTextยทยทWinding 2 Leakage Flux (Yellow-phase)
zolbfTextยทยทOuter-limb Flux (Blue-phase)
zolrfTextยทยทOuter-limb Flux (Red-phase)
zsbfTextยทยทZero-sequence Flux (Blue-phase)
zsrfTextยทยทZero-sequence Flux (Red-phase)
zsyfTextยทยทZero-sequence Flux (Yellow-phase)

PU Transformer Flux (Three Limb)

ParameterUnitDefaultDescription
lfyoketTextยทยทYoke Flux (Red-Yellow)
pwlbbtTextยทยทWinding 1 Flux (Blue-phase)
pwlbrtTextยทยทWinding 1 Flux (Red-phase)
pwlbytTextยทยทWinding 1 Flux (Yellow-phase)
pwlkbtTextยทยทWinding 1 Leakage Flux (Blue-phase)
pwlkrtTextยทยทWinding 1 Leakage Flux (Red-phase)
pwlkytTextยทยทWinding 1 Leakage Flux (Yellow-phase)
rtyoketTextยทยทYoke Flux (Blue-Yellow)
swlbbtTextยทยทWinding 2 Flux (Blue-phase)
swlbrtTextยทยทWinding 2 Flux (Red-phase)
swlbytTextยทยทWinding 2 Flux (Yellow-phase)
swlkbtTextยทยทWinding 2 Leakage Flux (Blue-phase)
swlkrtTextยทยทWinding 2 Leakage Flux (Red-phase)
swlkytTextยทยทWinding 2 Leakage Flux (Yellow-phase)
zsbtTextยทยทZero-sequence Flux (Blue-phase)
zsrtTextยทยทZero-sequence Flux (Red-phase)
zsytTextยทยทZero-sequence Flux (Yellow-phase)

PU Transformer Flux (1 Phase Bank)

ParameterUnitDefaultDescription
pwlbbsTextยทยทWinding 1 Flux (Blue-phase)
pwlbrsTextยทยทWinding 1 Flux (Red-phase)
pwlbysTextยทยทWinding 1 Flux (Yellow-phase)
pwlkbsTextยทยทWinding 1 Leakage Flux (Blue-phase)
pwlkrsTextยทยทWinding 1 Leakage flux (Red-phase)
pwlkysTextยทยทWinding 1 Leakage Flux (Yellow-phase)
swlbbsTextยทยทWinding 2 Flux (Blue-phase)
swlbrsTextยทยทWinding 2 Flux (Red-phase)
swlbysTextยทยทWinding 2 Flux (Yellow-phase)
swlkbsTextยทยทWinding 2 Leakage Flux (Blue-phase)
swlkrsTextยทยทWinding 2 Leakage Flux (Red-phase)
swlkysTextยทยทWinding 2 Leakage Flux (Yellow-phase)
yokebsTextยทยทYoke Flux (Blue)
yokersTextยทยทYoke Flux (Red)
yokeysTextยทยทYoke Flux (Yellow)

Core Aspect Ratios

ParameterUnitDefaultDescription
rayoRealยท1.0Ratio Yoke/Outer-limb AreaUsed when (Core>1)
raywRealยท1.0Ratio Yoke/Winding-limb Area
rlyoRealยท2.0Ratio Yoke/Outer-limb LengthUsed when (Core>1)
rlywRealยท2.0Ratio Yoke/Winding-limb Length

Related

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