YOKOGAWA CW500, Руководство по началу работы, Страница: 82 / 87

59
IM CW500-02EN
Harmonic voltage-current phase difference θk [deg]
Display digits 4 digits
Display range
0.0° to ±180.0°
Equation c: measurement channel, k: harmonic order
1P2W-1 to 4
θ
1k
, θ
2k
, θ
3k
, θ
4k
,
=
−
sumk
sumk
sumk
P
Q
1
tan
θ
1P3W(3P3W)-1, 2
θ
1k
, θ
2k
,
= −
k sum
k sum
k sum
P
Q
1
1
1
1 tan
θ
θ
3k
, θ
4k
,
=
−
k sum
k sum
k sum
P
Q
2
2
2
1
tan
θ
=
−
sumk
sumk
sumk
P
Q
1
tan
θ
3P3W3A(3P4W)-1
θ
1k
, θ
2k
, θ
3k
,
=
−
sumk
sumk
sumk
P
Q
1
tan
θ
Power Supply Quality Measurement Items
Voltage Transient
Measurement
system
Determines the presence of events at approx. 40.96 ksps (24 µs
interval) without gaps (50 Hz/60 Hz)
Display digits 4 digits
Effective input
range
50 V to 2200 V (DC)
Display range 50 V to 2200 V (DC)
Accuracy 0.5% rdg
*
Defined for 1000 V (DC)
Input
impedance
Approx. 1.67 MΩ
Threshold Specify the absolute peak voltage.
Detection channel (ch)
1P2W-1 to 4 V
1
1P3W-1, 2 V
1
, V
2
3P3W-1, 2 Line voltage V
12
, V
32
3P3W3A
Line voltage V
12
, V
23
, V
31
3P4W
V
1
,
V
2
,
V
3
Specifications