Major tech MT 770 Manuale di istruzioni - Pagina 8

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1. Ac Current Measurement

5. AC 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

40A

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.

Correct Current

Measurement

1000A

Incorrect Current

Measurement

400A