User Manual

1.2 Features
5
1. Event detection using preset threshold settings
Events exceeding thresholds are detected by setting thresholds for
various power quality parameters.
Up to 100 events can be saved to internal memory.
Up to 1000 events can be saved on PC card.
Events that occur simultaneously are correlated and treated as a
single event.
2. Event Analysis
Confirm when and what kind of events have occurred from the
Event List.
Each event can be analyzed using waveforms, vectors, harmonic
bargraph and related parameter values.
3. External input and output of events
A signal can be output when an event occurs. Also, an externally
applied signal can be set to be recognized as an event.
∆V10 Flicker, IEC flicker measurement
Select either IEC flicker (Pst, Plt) regulated by international standards,
or ∆V10 Flicker commonly used in Japan, and measure with power
quality parameters.
∆-Y and Y-∆ conversion functions provided
∆-Y conversion can be performed on three-phase 3-wire systems, and
Y-∆ conversion can be performed on three-phase 4-wire systems. In
either case, line-to-line voltage or phase-to-neutral voltage display is
available.
Up to one month continuous measurement
Data is saved to internal memory during the measurement period.
Use of a PC card enables continuous measurement for more than one
month.
Time plot graph display
Fluctuations in various power quality parameters are displayed in time
plot graphs.
Calculated maximum, average and minimum values for each interval
are displayed.
Event detection functions
Easy-to-see TFT color LCD
The display is a 6.4-inch (640 x 480 dot) high-contrast, wide-viewing-
angle TFT color liquid crystal display. The screen is easy to see in
both bright and dark environments, and is capable of showing many
power quality parameters at the same time.