6.4 Monitoring Interruptions
86
Quick Start Manual
(2) View the voltage fluctuation graph for an event
EVENT
Voltage values calculated for a single waveform shifted by a half wave
are displayed without alteration as a voltage fluctuation graph.
With the single-phase 2-wire setting (measurement of CH1 only), only a
red time series graph is displayed.
The vertical and horizontal scales of the fluctuation graph change auto
matically during recording.
If you want to change the vertical scale, you can do so while recording i
in progress; however, you must first stop recording if you want to
change the horizontal scale.
The change in voltage display settings are sampled at 256 points per
cycle, and are calculated without any gaps for one wave shifted over
half a wave.
Recording is preset for a pre-trigger of 0.5 second and a fixed recording
length of 10 seconds.
Only one fluctuation graph is recorded in internal memory.
You can read multiple fluctuation graphs by using a PC card.
In [SYSYTEM]-DF2 MAIN[
RECORDING], set “Auto Save” to “BINARY”.
Recording start time
Current time
When a voltage dip or voltage interruption occurs, display a graph of
voltage fluctuation at the time of event occurrence.
10.
Ending the recording interval
Use the same method as when measuring power fluctuation. (page 68)
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