Inrush
Inrush Trend Display
15
15-3
pretrigger
THRESHOLD
(=TRIGGER)
HYSTERESIS
DURATION
AMPLITUDE WINDOW
inrush time
rms during inrush
1
12.3 A
t 35 s
3
1.5 A
2
12.3 A
}
Figure 15-1. Inrush characteristics and relation with start menu
Use Cursor and Zoom to investigate details of the recorded Trends. Selection of channels
to be displayed is done with the up/down arrow keys. Press function key F1 to assign the
arrow keys to this.
The adjustment menu is reached via the SETUP key, F4 – MANUAL SETUP, F3 –
FUNCTION PREF., and F2 – INRUSH. You can set up the default values of the trigger
limits (expected inrush time, nominal current, threshold, hysteresis).
To set Offset and Span of the half cycle rms voltage and current Trend display press
SETUP key, F4 – MANUAL SETUP, F1 – TREND SCALE. For detailed information
see Chapter 24, FUNCTION PREFerences.
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