Hioki PW3360-21 - Page 217

12.5 Calculation Formulas
209
Chapter 12 Specifications
12
* Subscript c: measurement channel, k: order being analyzed
Total harmonic distortion (PW3360-21 only)
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
Total harmonic dis-
tortion-F
THD-F_U
c
[%]
THD-F_U
1
THD-F_U
1
THD-F_U
2
THD-F_U
1
THD-F_U
1
THD-F_U
2
THD-F_U
1
THD-F_U
2
THD-F_U
3
• When using 3P3W3M wiring, the phase voltage is used.
Total harmonic dis-
tortion-F
THD-F_I
c
[%]
THD-F_I
1
THD-F_I
1
THD-F_I
2
THD-F_I
1
THD-F_I
2
THD-F_I
3
Total harmonic dis-
tortion-R
THD-R_U
c
[%]
THD-R_U
1
THD-R_U
1
THD-R_U
2
THD-R_U
1
THD-R_U
1
THD-R_U
2
THD-R_U
1
THD-R_U
2
THD-R_U
3
Total harmonic dis-
tortion-R
THD-R_I
c
[%]
THD-R_I
1
THD-R_I
1
THD-R_I
2
THD-R_I
1
THD-R_I
2
THD-R_I
3
U
ck

2
k2=
40

U
C1
----------- ---------------------
100
(%)
I
ck

2
k2=
40

I
C1
----------- -------------------
100
(%)
U
ck

2
k2=
40

U
ck

2
k1=
40

----------- ---------------------
100
(%)
I
ck

2
k2=
40

I
ck

2
k1=
40

----------- -------------------
100
(%)