Fluke 381 User Manual

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: 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.

Fluke 381 Specifications

General

Continuity	60 Ω
Resistance (max)	600 Ω
Resistance (min)	6 Ω
Measuring category	CAT III 1000V, CAT IV 600V
AC voltage resolution (min)	600 V
AC current maximum resolution (probe)	2500 A
Product color	Yellow
Operating altitude	0 - 2000 m
Non-operating altitude	0 - 12000 m
Storage temperature (T-T)	-40 - 60 °C
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	0 - 90 %
Probe length	1800 mm
Carrying case	Yes
Probe diameter	7.5 mm

Weight and Dimensions

Depth	277 mm
Width	88 mm
Height	43 mm
Weight	350 g