Hioki 3197, Instruction Manual

Page: 78 / 200

4.4 Setting Event Detection [REC&EVENT]
70
An event is recorded when high frequency impulse noise is imposed on the
mains voltage waveform.
Setting Transient Events
Move to the setting item.
Select the screen.
1
2
Setting Contents
OFF/ ON (disable/enable transient event recording)
Select from the pull-down menu.
4
Accept Cancel
An event is detected as the presence, during any single cycle of the mains voltage wave-
form, of a frequency component at 10 to 100 kHz with 50 Vrms (±70.7 Vpeak equivalent) or
greater amplitude in either the positive or negative direction on any of the three channels.
See:
"Transient Overvoltage" (p. 112)
3
OFF ON
What is a transient?
On this instrument, a "transient overvoltage" is also called a "transient".
Transient overvoltage is sometimes also called an "excessive voltage spike" or "Impulsive voltage".
Only the existence or non-existence of transient overvoltage is detected.
Although voltage and current waveforms can be displayed when an event is
detected, the transient overvoltage waveform cannot be displayed.