Development and production of systems for measurement and control
By cursor buttons ▲ and ▼ move to event of your interest and pressing the button
SET
will display the event details.
Mowing the graph left or right use the buttons ▲ and ▼. In order to select the phase or phases to be shown on graph
press button
SET
and select the phase.
5.6.2. Rapid Voltage Change (RVC)
A Rapid Voltage Change (RVC) is an event characterized by a quick transition from one steady-state voltage to
another. Typically, RVC events are counted for a period of one hour, or for each day.
If the change in voltage is sufficient to cross the dip threshold or the swell threshold, then the event shall not be
recorded as an RVC event. It is a dip or a swell.
5.6.3. List of transients
PLA44 captures transients of voltage as short as 25 μs and keeps last 50 transients of each type in the nonvolatile
memory.
Type of event
Description
Different
Transients started by differential threshold defined by zone
Absolute
Transients started by threshold absolute value defined by set value of voltage
Waveform of transient event is possible be zoomed to the detail view by pressing the button
Fn
(
Zoom
). The detailed
zoom view can be moved forward and back by cursor buttons ▲ and ▼.
5.6.4. Power cuts
Power cuts of device supply voltage are recorded into the memory. Each recording is stored with date and time of
power cut start and end.
Last 15 supply voltage power cuts are captured in the nonvolatile memory.
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