Current Measurements - Unitest BEHA CHB 5 Bedienungsanleitung

5.2

Current Measurements

Before switching to a new function, the probes must always be removed from the
UUT.
1) Turn selector switch (3) to the current range (mA or A) you need
2) Open the clamp, and close it round the conductor. Make sure that the clamp proper-
ly encircles the conductor, and that there is no air gap between the jaws. For best
measurement results and highest accuracy, have the conductor placed in center of
clamp jaws.
Only use the frequency range switch (10) for hamrmonics wave
measurement.
For incorrect measurement, the display equals zero. In compliance with the Kirchhoff's
current law states the sum of all currents equals zero. However, this measurement lay-
out in conjunction with a very sensitive current clamp can be used to measure leakage
currents.
If the display is not visible during measurement, press the "HOLD" button (4) to
retain the display. The clamp can then be removed from the conductor and the sto-
red value read.
Addtional it´s possible to activate the MAX.-MIN.- PEAK measurement. Press the
key (4) to select the mode.
PE correct
N measurement
L
PE
non correct
N
measurement
L
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