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Clamp Meter
Using the Meter
9
Measuring Inrush Current
Inrush current is surge current that occur when an
electrical device is first powered on. Once the device has
reached its normal working condition, the current
stabilizes. See Figure 4.
To capture the inrush current reading:
1. With the system under test powered down, place the
source wire into the Meter jaws.
2. Turn the knob to A.
3. Press E on the Meter.
4. Power up the system under test. The inrush current
is shown on the Meter display.
A
A
OFF
A
AC+DC
V
A
A
OFF
A
V
AC+DC
V
AC+DC
600 V CAT
1000 V CAT
Auto
Range
355
AC/DC CLAMP METER
2000 A 600 V CAT
TRUE RMS
COM
V
HOLD
RANGE
ZERO
INRUSH
MIN MAX
Hz
FILTER
A
A
OFF
A
AC+DC
V
A
A
OFF
A
V
AC+DC
V
AC+DC
600 V CAT
1000 V CAT
Auto
Range
355
AC/DC CLAMP METER
2000 A
600 V CAT
TRUE RMS
COM
V
HOLD
RANGE
ZERO
INRUSH
MIN MAX
Hz
FILTER
Auto
Range
INRUSH
A
1
2
Off
On
4
3
100 ms
fbq07.eps
Figure 4. Measuring Inrush Current
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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