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6.3. Current Measurements
WARNING! This clamp is designed to take current measurements on circuits with a maximum voltage
difference of 600 V AC/DC between any conductor and ground potential. Using the clamp for current
measurements on circuits above this voltage may cause electric shock, instrument damage and/or
damage to the equipment under test. Before measuring current make certain that the test leads are
removed from the instrument.
The clamp is overload protected up to 600 V AC/DC for up to 1 Min. Do not take current readings on
circuits where the maximum current potential is not known. Do not exceed the maximum current that
this instrument is designed to measure.
6.3.1. Measurements with the Clamp:
1. Set Function Switch to 50 A / 1000 A position.
2. Press the trigger to open the transformer jaws and clamp them around a conductor. Jaws should
be completely closed before taking a reading.
Note: Take the clamp only around the live conductor (L1 or N)
3. Select the desired AC or DC range by pressing MODE-button.
4. The most accurate reading will be obtained by keeping the conductor across centre of the
transformer jaws. The reading will be indicated on the display.
5. DCA Zero: The zero feature removes offset values and improves the accuracy for DC current
measurements.
•
Perform a zero adjustment by selecting 400A/1500A DC range with the function selector switch
and
without
•
The display shows zero. The offset value is now stored and removed from all
measurements
•
Now
perform
a
conductor
your
current
measurement,
in
the
clamp,
as
-37-
press
the
described
in
points
ZERO
button.
–
1
4.
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