Hioki PW3390 - Page 223

10.6 Calculation Formula Specifications
215
10
10
Chapter 10 Specifications
(i) : Measurement channel
k : Order of analysis
K : Maximum analysis order (depending on sync frequency)
1P2W 1P3W 3P3W2M 3P3W3M 3P4W
Harmonic
voltage
content
Harmonic
current
content
Harmonic
power
content
THD Voltage
Percentage
THD Current
Percentage
Items
Phase
System
Uhd
ki
U
k
U
1
------
100=
Ihd
ki
I
k
I
1
----
100=
Phd
ki
P
k
P
1
------
100=
Uthd
i
U
k

2
k2=
K

U
1
-----------------------------
100=
(with THD-F setting), or
(with THD-R setting)
U
k

2
k2=
K

U
k

2
k1=
K

-----------------------------
100
Ithd
i
I
k

2
k2=
K

I
1
---------------------------
100=
(with THD-F setting), or
(with THD-R setting)
I
k

2
k2=
K

I
k

2
k1=
K

---------------------------
100
I
III, IV
II
-
90°
+90°
0°
+180°
0°
U
kr i
U
ki i
–
----------------


1–
tan 180  +
U
kr i
U
ki i
–
----------------


1–
tan
U
kr i
U
ki i
–
----------------


1–
tan 180  –
U
ki i
0 U
kr i
0=
U
ki i
0 U
kr i
0=
U
ki i
0 U
kr i
 0=
U
ki i
0 U
kr i
 0=
U
ki i
0 U
kr i
 0==
Phase reference
Image