Hioki PW3360-21 - Page 216

12.5 Calculation Formulas
208
Harmonic phase angle (PW3360-21 only)
* Subscript c: measurement channel,
k: order being analyzed; r: resistance after FFT; i: reac-
tance after FFT
Wiring
setting
Item
Single-phase
2 wire
Single-phase
3 wire
Three-phase
3 wire
Three-
phase
4 wire
1P2W 1P3W 1P3W1U 3P3W2M 3P3W3M 3P4W
Voltage phase
angle
φUck
(phase_U
c
)
[deg.]
φU
1k
φU
1k
φU
2k
φU
1k
φU
1k
φU
2k
φU
1k
φU
2k
φU
3k
tan
-1
• The harmonic voltage phase angle is corrected and displayed using the U
1
fundamental
wave as 0°.
When using 3P3W3M wiring, the fundamental wave of the phase voltage u
1
is used as 0°.
• When U
ckr
=U
cki
=0, φU
ck
=0°
Current phase
angle
φIck
(phase_I
c
)
[deg.]
φI
1k
φI
1k
φI
2k
φI
1k
φI
2k
φI
3k
tan
-1
• The harmonic current phase angle is corrected and displayed using the U
1
fundamental
wave as 0°.
• When using current-only wiring, the phase angle is corrected
and displayed using the I
1
fundamental wave as 0°.
• When I
ckr
=I
cki
=0, φI
ck
=0°
Power
phase angle
φPck
(phase_P
c
)
[deg.]
φP
1k
φP
1k
φP
2k
φP
1k
φP
2k
φP
3k
tan
-1
φP
k
When P
ck
=Q
ck
=0, φP
ck
=0°
U
ckr
U –
cki
---------- ----


I
ckr
I–
cki
---------- ----


Q
ck
P
ck
--------

