Appx.
3
Instant value recording
For instant value recording, an RMS value is measured only once for each set
recording interval. (If the recording interval is less than 0.5 seconds, an RMS value is
measured every 0.5 seconds and the necessary effective values are recorded all at
once.)
Recording interval
Records instant values.
Average/ Maximum value recording
For average/maximum value recording, an RMS value is measured only once every
0.5 seconds and the average/ maximum of all data in the recording intervals is
recorded. (If the recording interval is less than 1 second, an RMS value is handled in
the same manner as instant value recording.)
After recording starts, the average/maximum value in the recording interval is
recorded. As initial data, the instant value immediately after the recording starts is
recorded.
Recording interval
Records instant values.
0.5 seconds interval
Records the average/ maximum value in this period.
Crest factor
In case of AC current measurement, when the peak of the waveform exceeds 2.5
times the range, the peak of the waveform is cut inside the circuit. Consequently
accurate measurement cannot be performed and
[O.F.]
is displayed in the LCD
display of the instrument. In such a case, change to a larger measurement range.
Example: For the CT6500, if the peak of the waveform exceeds 125 A (50 A × 2.5)
in the 50 A range,
[O.F.]
is displayed. Therefore, use the 500 A range.
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