Power and Voltage Quality Trainer
AD 2
– MI 3399
188
Application Trainer is raised to more than 1700 A (after pressing the RESET key). This
clearly indicates a possible inrush event.
Figure 4-76: Measurement submenu
4.9.2 Inrush capturing
In order to capture inrush waveforms, it is necessary to choose the RECORDERS
WAVEFORM RECORDER. This recorder type is specifically designed to capture
events, such as current inrush or voltage dips. In order to capture inrush, it is necessary
to select
“Level I” trigger. By observing RMS (996 A) and MAX (1786 A) values from
the figure above, we can choose the current LEVEL which will trigger inrush capturing.
In this case we chose 1100A trigger level with rising slope. The instrument starts
waveform recorder when the measured current reaches the given current threshold,
as shown in the figure below.
Current
t
I
Rms(10msec)
Trigger Point
Pretrigger
(1 sec)
Duration (2 sec)
Trigger:
Current level
Waveform record
µSD
Card
REC001.WAV
REC001.INR
}
Figure 4-77: Current Level Triggering (Inrush)
After the WAVEFORM RECORDER is set up, we can proceed with recording. The
recorder is started by pressing the START (F1) key. A yellow icon in the status bar
indicates that waveform recorder is active and is waiting for an inrush event to happen.
Summary of Contents for MI 3399
Page 27: ...Electrical Installation Safety Trainer AD 1 MI 3399 27...
Page 46: ...Electrical Installation Safety Trainer AD 1 MI 3399 46 3 Exit settings...
Page 74: ...Electrical Installation Safety Trainer AD 1 MI 3399 74...
Page 197: ...Power and Voltage Quality Trainer AD 2 MI 3399 197 Figure 4 89 Transient Chart view...
Page 204: ...PAT Appliances Machines Safety Trainer AD 3 MI 3399 204...
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