S
PECIFICATION
Power Analyzer User Manual
© Voltech 2010
Page 73
A
THD
Current
Total
Harmonic
Distortion
%
REF
....
H
H
H
H
H
series
2
2
2
2
2
5
4
3
2
)
0
(
or
2
2
1
Arms
H
difference
REF
Z
Impedance
Ohm (θ)
rms
rms
I
V
Z
V
DC
DC Voltage
Volt (V)
T
DC
vdt
T
V
0
1
A
DC
DC Current
Amp (A)
T
DC
idt
T
A
0
1
R
Resistance
Ohms
(
Ω)
cos
Af
Vf
R
(θ = phase angle)
X
Reactance
Ohms
(Ω)
sin
Af
Vf
X
(θ = phase angle)
Vh
n
Voltage
harmonic n
Volt (V)
r
Vh
q
Vh
Phase
q
Vh
r
Vh
Mag
n
n
n
n
.
.
tan
)
.
.
(
1
2
2
Ah
n
Current
harmonic n
Amp (A)
r
Ah
q
Ah
Phase
q
Ah
r
Ah
Mag
n
n
n
n
.
.
tan
)
.
.
(
1
2
2
V
PK
+
(+)ve Peak
Voltage
Volt (V)
v
max
V
PK
-
(-)ve Peak
Voltage
Volt (V)
v
min
A
PK
-
(+)ve Peak
Current
Amp (A)
i
max
A
PK
+
(-)ve Peak
Current
Amp (A)
i
min
