14-4
IM WT5000-02EN
14.2 Executing IEC Voltage Fluctuation/Flicker Measurements
Display Example; Normal Voltage Fluctuation/Flicker
Measurement (Measurement mode: Flicker)
Display during Measurement
Number of the element whose measured data is displayed
Number and bar graph of the
observation periods that have
completed measurements
Elapsed time and bar graph within one
observation period
Flicker measurement status: Start
Edition number of the standard
Limit value
For items whose judgment is set to OFF,
<OFF> is displayed to the right of the limit
value.
“d(t)” is displayed here when the IEC
61000-4-15 edition number is set to
Edition 1.1 or the IEC 61000-3-3 edition
number is set to Edition 2.0.
Observation periods that have
completed measurements
• The last dc, dmax, and Tmax values are
compared to their limit values, and the
judgments (Pass/Fail) are displayed to
the right of the last values.
• Short-term flicker value Pst is calculated
and compared to its limit value, and the
judgment (Pass/Fail) is displayed.
Total elapsed
measurement time
Observation period in measurement
• An asterisk is displayed to the right of No., and dc, dmax, and Tmax (or
d(t)) of that row display the maximum values within the observation
period. The values are updated when the instantaneous values at
every 2 seconds exceeds the maximum values up to that point.
• The judgments of items whose judgment is set to OFF will be blank.
Judge Display When the Measurement Is Complete
Flicker measurement status: Complete
Element judgment
For elements whose measured data is
displayed, the judgment is Pass if the
judgments of all items whose judgment is
set to ON are Pass; otherwise it is Fail.
Total judgment
The judgment is Pass if the judgments of
all elements under measurement are
Pass; otherwise it is Fail.
Element under measurement
Long-term flicker value Plt is compared to
its limit value, and the judgment (Pass/Fail)
is displayed.
For dc, dmax, Tmax (or d(t)), and Pst, the judgment is Pass if the judgments of all
observation periods are Pass; otherwise it is Fail.
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