Measurement; Overload Indication; Auto Off; Specifications - Chauvin Arnoux PAC 12 Notice De Fonctionnement

3.3. MEASUREMENT

After having switched on the clamp, connected it to the measurement instrument on the appropriate
range, and followed the auto zero procedure (see the two paragraphs above), clamp the conductor to
be measured ➀ between the jaws of the clamp.
On DC current measurement, ensure that the arrow located on the external edge of the jaws
➁ corresponds to the direction of the current flowing in the conductor (source ⇒ receiver).

3.4. OVERLOAD INDICATION

Detection of overload of the range of the clamp is indicated by the red light ➄. This indicator flashes for
a peak current greater than 60 A on the 40 A range (10 mV/A) or 600 A on the 400 A range (1 mV/A).

3.5. AUTO OFF

The clamp has an Auto Off feature which switches off 10 minutes after the clamp has been switched on,
without the controls being used.
When the clamp is switched off by this automatic function, the switch ➆ must first be set to the OFF
position before being switched on again.
This function can be overridden by the user when switching on. Simply press the auto zero button ➃ at
the same time as setting the switch ➆ from the OFF position to the 1 mV/A or
10 mV/A position. If the green indicator ➅ flashes whilst the zero reset button is being pressed, this
indicates that the auto off function has been inhibited.
Ranges
40 A
400 A

4.1. REFERENCE CONDITIONS

- Temperature : 18 ... 28°C
- Humidity rate : 20 ... 75% RH
- Battery voltage : 9 V ± 0.1 V
- Position of conductor : centred on the markings of the clamp
- Magnetic field : Earth's DC field
- Absence of external AC magnetic field
- Absence of electric field
- Measurement for a DC current or an AC sinusoidal current
- Impedance of the measurement instrument :

4. SPECIFICATIONS

Input/output
ratio
10 mV/A
1 mV/A
Measurement extent
AC rms
0.2 ... 40 A
0.5 ... 400 A
≤
65 Hz
≥ ≤
1 MW and 100 pF
12
peak max
0.2 ... 60 A
0.5 ... 600 A
DC
0.4 ... 60 A
0.5 ... 600 A