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The content of this chapter should be thoroughly read and un-
derstood since it describes methods of measurements and basic
principles of interpreting measurement results.
5.1 Current measurement
WARNING
Disconnect the test leads before measuring current us-
ing clamp.
To perform the current measurement:
set the rotary switch at:
press MODE/VFD button to display the following symbol:
, if you are measuring alternating current,
, if you are measuring direct current,
use the clamp-opening trigger
tested conduit. Only one conduit must be within the testing range
of the clamps,
read the measurement result on the display.
If DC current is measured and the meter is not attached to
the tested circuit, but it still indicates a non-zero value, then
you must reset it by pressing and holding
48
5 Measurements
~ / 400A ~,
40A
/ 400A
40A
CMP-402 ● CMP-403 – USER MANUAL
,
and attach the clamps on the
button.
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