Appx.17
Recording Trends and Event Waveforms
Method for verifying aggregation values required by IEC61000-4-30
3-s aggregated values
(= 150/180-cycle data)
10-min aggregated
values
2-h aggregated values
Magnitude of the supply
voltage
Applies to the average value of Urms values obtained on each channel over
the recording interval.
Voltage harmonics Measurement condition: Recording items*
1
is set to Yes harmonic.
Applies to the average value of the values obtained over the recording
interval.
Voltage interharmonics
Supply voltage unbalance Applies to the average value of unb values and unb0 values of Uunb obtained
over the recording interval.
Measurement conditions • Recording interval*
1
is set to 150/180
cycle.
• Recording interval*
1
is set to 10 min.
• Recording interval*
1
is set to 2 hour.
• TREND screen check requires that Tdiv (horizontal axis) be set to the
minimum value to make cursor measurements.*
2
*1: See “5.2 Recording Settings” (p. 69).
*2: See “8.1 Verifying the Basic Trend” (p. 98).
IEC icker (available after the rmware update)
When measuring IEC icker based on the standard, set the Recording interval to 2 hour and use
only a Plt value with even-numbered but 2 hours after the recording starts (e.g., 2 hours, 4 hours
and more).
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