Major tech MT775 Instruction Manual - Page 9

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Major tech MT775 Instruction Manual
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
range position, and make sure that the current
~
40A
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
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.
Correct Current
Measurement
8
~
1000A
Incorrect Current
Measurement
~
or
or
400A
this