Hioki PQ3100 User Manual

Appx.10
Event Detection Methods
Voltage swells, Voltage dips, Interruptions
Measurement method
• Voltage swell, voltage dip, and interruption events are detected using the RMS voltage refreshed
each half-cycle that is calculated from the voltage waveform obtained over a 1-cycle time,
refreshed each half-cycle.
• Events are detected using line voltage for 3-phase 3-wire wiring and phase voltage for 3-phase
4-wire wiring.
• Voltage swells are detected when RMS voltage refreshed each half-cycle exceeds the threshold
value.
• Voltage dips and interruptions are detected when RMS voltage refreshed each half-cycle falls
below the threshold value.
Event IN and OUT
Event IN Voltage swells: Time when RMS voltage refreshed each half-cycle exceeds
the threshold value.
Voltage dip/Interruption: Time when RMS voltage refreshed each half-cycle
falls below than the threshold value.
Event OUT Voltage swells: The time when an RMS voltage refreshed each half-
cycle falls below the value calculated by subtracting the hysteresis from
the threshold value after once the RMS voltage refreshed each half-cycle
exceeds the threshold value
Voltage dip/Interruption: The time when an RMS voltage refreshed each
half-cycle exceeds the value calculated by adding the hysteresis to the
threshold value after once the RMS voltage refreshed each half-cycle falls
below the threshold value
RMS voltage
refreshed each
half-cycle
Event IN
Event OUT
Hysteresis
Threshold
Voltage swell
RMS voltage
refreshed each
half-cycle
Event IN
Event OUT
Hysteresis
Threshold
Voltage dip, interruption

Hioki PQ3100 Specifications

General

Brand	Hioki
Model	PQ3100
Category	Measuring Instruments
Language	English