KYORITSU 6315 Instruction Manual - Manual (Page 120)

KEW6315 Displaying recorded events
KEW6315 - 118 -
Detection of Transient
Voltage waveforms will be monitored at approx 40ksps, gapless, to calculate and check for transient event
every 200ms. The beginning of the 200ms period where the first transient is detected is regarded as the
start of the event. If further events are not detected in the following 200ms period, the beginning of the
period is regarded as the end of the event. The detected transient is assumed to be continued between the
start to the end of event detection.
Example of Transient detection
Save data
When an event occurs, event type, time of start/ end and measured values will be recorded together with
the following data.
Event waveform
Waveforms and also event data on all the chs are recorded for approx. 200ms (50Hz: 10-cycle, 60Hz:
12-cycle) at 8192 points in total. When different events occur within 1 sec, only the waveforms which
contain the highest-priority events will be recorded. However, if the same type of events occur at the
same time, the one containing the highest (deepest) values will be recorded. If the highest (deepest)
values are also the same, the one with a longer duration will be recorded. As for the channels, there is
no priority order.
[Priority order]: Voltage transient -> INT -> Dip -> Swell -> Inrush current
RMS variations
Voltage/ current rms value variations and event data on all chs are recorded for 1 sec.
Example of Dip detection for approx. 800ms (saved data)
.
Threshold value
Start of transient
Measured
waveform
RMS waveform
Approx. 200ms
Approx. 1 sec.
Measured
waveform
Approx. 200ms
Duration
End of transient
Approx. 200ms
Approx. 1 sec.