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In addition to the voltage, current is also recorded. This allows you to see cause and
effect of deviations. Function key 【F2】 accesses event tables where voltage
events are listed in sequence.
Trend
Available function keys:
F1 Switch between voltage and current trends, the header shows parameters
being displayed.
F2 Access to Events tables
F3 Access to Cursor
F4 Selection of Cursor move or Zoom
F5 Switch between RUN and HOLD.
Event criteria such as threshold, hysteresis and others are preset, but they may be
adjusted. The adjustment menu is reached via the 【SETUP】 key and limits setup.
Events tables
The Events table lists all threshold crossings of phase voltages. Thresholds
according to international standards or user –definable thresholds can be used. The
Events table records major event characteristics: start time, duration, voltage
magnitude, event type, and occurrence phase etc.
Tips and Hints
The occurrence of Dips and Swells may indicate a weak power distribution system. In
such a system voltage will change considerably when a big motor or a welding
machine is witched on or off. This may cause lights to flicker or even show visible
dimming. It may cause reset and loss of data in computer systems and process
controllers.
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