Major tech MT775 - AC True RMS Current Measurement

9. AC TRUE RMS CURRENT MEASUREMENT
WARNING: Ensure that the test leads are
disconnected from the meter before making
current measurements.
1. Set the function switch to or or
range position, and make sure that the current
under test does not exceed the upper limit of
the measuring range you have selected.
2. Press the trigger to open up the transformer
jaws and clamp around the single conductor
under test.
3. Read the display.
Note: • During current measurements keep the
transformer jaws fully closed, otherwise this
will affect the accuracy of the
measurement.
• When large currents the transformer
jaws may buzz. This is not a fault and
does not affect the accuracy of the
reading.
40A
~
400A
~
1000A
~
Correct Current
Measurement
Incorrect Current
Measurement
!!
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