218
Specifications of Equations
Wiring
Item
1P2W
1P3W
3P3W2M
3V3A
3P3W3M
3P4W
Harmonic
voltage content
percentage
U hd
k
(
i
)
=
U
U
k
1
×
100
Harmonic
current content
percentage
I hd
k
(
i
)
=
I
I
k
1
×
100
Harmonic
power content
percentage
Phd
k
(
i
)
=
P
P
k
1
×
100
Total voltage
harmonic
distortion
Uthd
(
i
)
=
U
U
k
k
K
( )
=
∑
2
2
1
×
100
(with THD-F setting) or
U
U
k
k
K
k
k
K
( )
( )
=
=
∑
∑
2
2
2
1
×
100
(with THD-R setting)
Total harmonic
current distortion
Ithd
(
i
)
=
I
I
k
k
K
( )
=
∑
2
2
1
×
100
(with THD-F setting) or
I
I
k
k
K
k
k
K
( )
( )
=
=
∑
∑
2
2
2
1
×
100
(with THD-R setting)
(
i
)
: measurement channel,
k
: harmonic order,
K
: maximum analysis order (varies with synchronization frequency)
Real
θU
ki
U
kr
(
i
)
U
ki
(
i
)
I
IV
II
(
−
)
(
−
)
−90
°
+
90
°
+
180
°
(+)
(+)
III
Image
0
°
Phase reference
Example: for harmonic voltage
I
tan
−
( )
( )
−
1
U
U
kr i
ki i
+180
°
III, IV
tan
−
( )
( )
−
1
U
U
kr i
ki i
II
tan
−
( )
( )
−
1
U
U
kr i
ki i
−180
°
U
ki
(
i
)
= 0,
U
kr
(
i
)
< 0
−90
°
U
ki
(
i
)
= 0,
U
kr
(
i
)
> 0
+90
°
U
ki
(
i
)
< 0,
U
kr
(
i
)
= 0
0
°
U
ki
(
i
)
= 0,
U
kr
(
i
)
= 0
0
°
U
ki
(
i
)
> 0,
U
kr
(
i
)
= 0
+180
°
HIOKI PW8001A961-00
Summary of Contents for PW8001-01
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Page 6: ...Contents iv HIOKI PW8001A961 00...
Page 56: ...50 Checking Connections HIOKI PW8001A961 00...
Page 120: ...114 Power Calculation Method HIOKI PW8001A961 00...
Page 162: ...156 Controlling Integration with External Signals HIOKI PW8001A961 00...
Page 236: ...230 U7005 15MS s Input Unit HIOKI PW8001A961 00...
Page 258: ...252 Index HIOKI PW8001A961 00...
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