EXTECH MA3110 [8/15] Ac current measurements

MA3110-en-GB_V1.0 12/16

AC Current Measurements

WARNING: Ensure that power to the device under test is OFF before starting this

procedure. Switch power to the device under test ON only after the clamp has been safely

attached to the device under test.

CAUTION: Do not move fingers above the LCD at any time during a test.

1. Switch the meter OFF and switch OFF power to the device under test.

2. Switch the meter ON and select ‘A’ with the function switch. The display will show the

automatic range icon (AUTO).

3. Turn the knurled clamp lock mechanism counter-

clockwise to release the flexible clamp.

4. Fully enclose only one conductor of the device under

test with the flexible clamp probe (see accompanying

diagrams). Do not attempt to measure current higher

than the specified current limit.

5. Re-lock the clamp turning the clamp lock clockwise.

6. Switch power to the device under test ON. Never move fingers above the LCD when

running a test.

7. Read the current value in the display. The meter will automatically select the appropriate

range (600.0A and 3000A).