13-1
IM WT1801-01EN
13 Vector Display (Option)
Vector Display (OTHERS (Vector))
On models with the harmonic measurement option or the simultaneous dual harmonic measurement option,
you can select a wiring unit to display vectors of the phase differences and amplitudes (rms values) of the
fundamental signals, U(1) and I(1), in each element in the unit. The positive vertical axis is set to zero (angle
zero), and the vector of each input signal is displayed.
Vector Display Example
For a 3P3W system with a three-voltage, three-current method
• U1(1), U2(1), and U3(1) are line voltages.
• I1(1), I2(1), and I3(1) are line currents.
I1(1)
I3(1)
I2(1)
O
U1(1)
U3(1)
U2(1)
ΦU1-U2
ΦU2-U3
ΦU3-U1
Size of the peripheral circle (range)
U1(1) 102.60 V
I1(1) 3.5237 A
P1(1) 0.3562kW
S1(1) 0.3615kVA
Q1(1) -0.0618kvar
λ1(1) 0.9853
U2(1) 101.45 V
I2(1) 3.5090 A
P2(1) 0.5542kW
S2(1) 0.6016kVA
Q2(1) 0.2342kvar
λ2(1) 0.9211
U3(1) 101.40 V
I3(1) 3.4990 A
P3(1) -0.2128kW
S3(1) 0.5997kVA
Q3(1) -0.5067kvar
λ3(1) -0.3549
Wiring ΣA = 3P3W(3V3A)
PLL Src = U1
fPLL1 = 743.00 Hz
ΦU1-U2 = 57.67
ΦU1-U3 = 302.78
ΦU1-I1 = 315.35
ΦU2-I2 = 22.91
ΦU3-I3 = 249.22
300.0 V
6.000 A
For a 3P4W (three-phase, four-wire
system)
• U1(1), U2(1), and U3(1) are line
voltages.
• I1(1), I2(1), and I3(1) are line
currents.
For a 3P3W (three-phase, three-wire
system)
• U1(1), U2(1), and U3(1) are line
voltages.
• I1(1), I2(1), and I3(1) are line c
urrents.
However, U3(1) and I3(1) are not
actually measured for the 3P3W
system. The vectors are displayed
through computation.
Φ2(1)
Φ1(1),
ΦU1-I1
Φ3(1)
ΦU1-U3
ΦU1-I2
U1(1)
I1(1)
I3(1)
U3(1)
I2(1)
U2(1)
ΦU1-U2
ΦU1-I3
I1(1)
I3(1)
I2(1)
O
U1(1)
U3(1)
U2(1)
ΦU1-U2
ΦU2-U3
ΦU3-U1
If the analysis window width (number of cycles of the fundamental signal) that is determined by the
fundamental frequency is shorter than the data update interval, vectors are not displayed. Set a longer data
update interval. For details, see “Notes about the Numeric Data Display.”
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