Starting Current Or Overcurrent (True Inrush™) Measurement; Frequency Measurement (Hz); Frequency Measurement (V) - AEMC 401 User Manual

Clamp-on meter

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3.10 STARTING CURRENT OR OVERCURRENT (True Inrush™)

MEASUREMENT

To measure a starting current or overcurrent, proceed as follows:

Set the switch to

measured. Press the

Perform a long press on the

displayed, along with the triggering threshold. The clamp then awaits

detection of the True InRush™ current. "------" is displayed and the A

symbol flashes.

After detection and acquisition for 100 ms, the RMS value of the True-

Inrush™ current is displayed. Pressing the

PEAK+/PEAK- values subsequently.

A long press on the

switch will exit the True InRush™ mode.

NOTE: The triggering threshold in A is 10A if the initial current is zero (starting of

installation). For an established current (overload in an installation) see §3.4.3.

3.11

The frequency measurement is available in V and A for AC measurements. The

measurement is based on a count of zero crossings (positive-going edges).

To measure the frequency in voltage, proceed as follows:

Set the switch to

Select AC by pressing the

is reached.

Connect the black lead to the COM terminal and the red lead to the "+"

terminal.

Connect the test probes or the alligator clips to the circuit to be

measured.

, then clamp the jaws around the conductor to be

(yellow) button to select AC measurement.

button or a change of function on the rotary

and press the

(yellow) button until the desired choice

button. The InRh symbol is

button will display the

button. The Hz symbol is displayed.

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