Hioki PQ3100 - Recording Event Waveforms; Event Waveform Recording Period; Event Recording for 200-ms Aggregation; Event Recording for 1-cycle or Half-cycle

Appx.19
Detailed Explanation of IEC Flicker and ∆V10 Flicker (available after the rmware update)
Short interval icker (
Pst
)
This indicates degree of perceptibility (severity) of icker measured over a 10-min period.
Short interval icker value is dened with the following expression.
0.0314P0.1+0.0525P1s+0.0657P3s+0.28P10s+0.08P50s
P
st =
P50s = (P30+P50+P80)/3
P10s = (P6+P8+P10+P13+P17)/5
P3s = (P2.2+P3+P4)/3
P1s = (P0.7+P1+P1.5)/3
P0.1 is not smoothed
Long interval icker (
Plt
)
Indicates the degree of perceptibility (severity) of icker determined from successive
Pst
measurements over a 2-hour period.
The displayed value is updated every 10 min because
Pst
is calculated with the moving average.
Long interval icker value is dened with the following expression.
3
3
(Psti)
N
Plt =
∑
10
9
8
7
6
5
4
3
2
1
Appx. Ind.