Kikusui KHA3000, Руководство по эксплуатации, Страница: 161 / 392

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KHA3000
161
HA-Observation and Analysis Menu
Observation, Analysis and Judgem
ent of Harm
onics
Browsing Data Frame
The time position of a measurement window can be specified for analysis. The time position
of the measurement window is controlled as a data frame. The length of time for each data
frame varies depending on the measurement time. The longer the measurement time, the
longer the length of time for each data frame and the lower the resolution in the time direction.
Measuring
technique standard Measurement
time (T) Time per data
frame (second) Number of data frames that can be input
(proportional to measurement time)
IEC 61000-4-7
Ed2.0
IEC 61000-4-7
Ed2.1 T

150 s 0.2
0 to 750 (fundamental frequency 50 Hz
or 60 Hz)
150 s < T

300 s 0.4
300 s < T

600 s 0.8
600 s < T

1200 s 1.6
1200 s < T

2400 s 3.2
2400 s < T

4800 s 6.4
4800 s < T

9600 s 12.8
IEC 61000-4-7
Ed1.0 T

150 s
0.32
*1
0 to 469 (fundamental frequency 50 Hz
*1
)
0 to 564 (fundamental frequency 60 Hz
*2
)
0.266
*2
150 s < T

300 s
0.64
*1
0.532
*2
300 s < T

600 s
1.28
*1
1.06
*2
600 s < T  1200 s
2.56
*1
2.13
*2
1200 s < T

2400 s 5.12 *1
4.25
*2
2400 s < T

4800 s 10.24
*1
8.51
*2
4800 s < T

9600 s 20.48 *1
17.02
*2
Example: If the measurement time is set to 150 seconds in IEC 61000-4-7 Ed2.0, the setting range of
the data frame becomes 0 to 750. Five data frames correspond to 1 second.
Measurement time
1 2 3 4 5
Measurement window: 0.2 s or 16 cycles:
Length of time for a data frame
Data frame No.
PHDVXUHPHQWZLQGRZ 7”V PHDVXUHPHQWZLQGRZ V7”V
PHDVXUHPHQWZLQGRZVV7”V PHDVXUHPHQWZLQGRZVV7”V
PHDVXUHPHQWZLQGRZVV7”V PHDVXUHPHQWZLQGRZVV7”V
PHDVXUHPHQWZLQGRZVV7”V 70HDVXUHPHQWWLPH