KYORITSU 6315 Quick Manual - Manual (Page 33)

Swell/ Dip/ Int/ Inrush current KEW6315
- 31 - KEW6315
Measurement method
Swell/ Dip/ Int/ Inrush current
Each event will be detected with the r.m.s. values in one gapless waveform and with a half-wave over-
lapping. The beginning of the waveform where the first event is detected is regarded as the start of the
event. If further events are not detected in the following waveform, the beginning of the waveform is
regarded as the end of the event. The detected event is assumed to be continued between the start to
the end of event detection.
Example: Dip event detection
*
Int events are detected in the same method.
Example: Swell event detection
*
Inrush current events are detected in the same method.
rms value(1)
rms value(2)
rms value(3) rms value (5) rms value (7) rms value(9)
rms value(4) rms value(6) rms value(8)
Measured
waveform
rms value(1)
rms value(2)
rms value(3) rms value(5) rms value(7) rms value(9)
rms value(4) rms value(6) rms value(8)
Measured
waveform
RMS waveform
Start of dip End of dip
duration
Hysteresis
Threshold
(4)
(5)
(6)
(7) (8) (9) (1) (2) (3)
RMS waveform
Start of swell
duration
End of swell
(4)
(5)
(6)
(7) (8) (9) (1) (2) (3)
Threshold