Clamp Meter
7
6. MEASURING INSTRUCTION
6-1 ACA、ACmA Measurement:
(1) Set the range selector switch to the desired position. The current
to be measured should be within the selected measuring range.
(2) Normal measurement (see Fig.1):
Press the jaw trigger to open the clampmeter jaws and close them
over one conductor only. The measured current value is shown on
the display. Earth leakage current or any small AC current that flows
through a ground wire can also be measured by this method.
(3) Measuring out of balance leakage current (see Fig.2):
Clamp onto all conductors except the ground wire. The measured
imbalance current value is shown on the display.
Before this measurement, disconnect any test leads from the meter
for safety.
In some cases wherein reading the display is difficult, press the
HOLD button and read the result after the clamp is removed from the
conductors.
Fig.1 Normal measurement:
INCORRECT CORRECT
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