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Measurement Method
6.7 IEC Flicker
107
9.
Checking recorded measurement data
Determine the maximum value of Pst and Plt during the measurement period.
LIST
The Pst, Plt statistics
are confirmed from the
list display.
Statistics on Pst and Plt are displayed every 10 minutes, along with the
date and time.
• Pst: short interval flicker value
• Plt: long interval flicker value
• EN50160, “Voltage characteristics of electricity supplied by public
distribution systems”, specifies "In any period of one week the long
term flicker severity caused by voltage fluctuation should be Plt
≤1 fo
95% of the time."
Pst Plt
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