Fluke 381 Fluke 381 Users Manual - Page 16

Inrush, Low Battery Indicators, appears

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381 Users Manual Inrush Inrush Current is surge current that occurs when an electrical device is first powered on. The Meter can capture this surge current reading. Current spikes from motor drives are one example of such an event. The Inrush function takes approximately 400 samples over a 100 ms period and calculates the starting current envelope. Low Battery Indicators The Meter uses two low battery symbols: Band Q. When B appears, the batteries in the Meter base should be changed. Low batteries on the Meter base will affect the readings. When Q is displayed, the batteries for the removable display should be changed. Measurements are not affected by low batteries in the display. 12

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381
Users Manual
12
Inrush
Inrush Current is surge current that occurs when an electrical device is first powered on. The
Meter can capture this surge current reading. Current spikes from motor drives are one example
of such an event. The Inrush function takes approximately 400 samples over a 100 ms period and
calculates the starting current envelope.
Low Battery Indicators
The Meter uses two low battery symbols:
B
and
Q
. When
B
appears, the batteries in the Meter base should be changed. Low batteries on the Meter base will
affect the readings. When
Q
is displayed, the batteries for the removable display
should be changed. Measurements are not affected by low batteries in the display.