Use; Getting Started; Zero Adjustment; Measurement - Chauvin Arnoux PAC 25 Manual De Instrucciones

2.1. GETTING STARTED

Switch the clamp on by pushing the slide switch to the 1mV/A or the 10mV/A setting.
The 1mV/A setting corresponds to the 1400A range of the PAC 25 and PAC 26.
The 10 mV/A setting corresponds to the 150A range of the PAC 26.
The ON indicator lights green. If it blinks, there remain less than 4 hours of use. If it fails to light, you
must replace the battery (see § 4.2).

2.2. ZERO ADJUSTMENT

„ Switch the clamp on.
„ Make sure that the clamp is not on a conductor and that its jaws are correctly closed.
„ Connect the clamp to the measuring instrument. The phase is on the red lead.
„ Press the zero adjustment button, DC Zero.
„ The OL indicator lights for approximately three seconds to indicate that the zero adjustment is in
progress.
„ If the zero has been correctly adjusted, the OL indicator goes off. If it remains on, the zero could
not be adjusted.
In this case, check that the clamp is not on a conductor and that its jaws are correctly closed, then
press the DC Zero button again.
Or switch the clamp off and back on; the last adjustment will then be used, even if it is not good.

2.3. MEASUREMENT

The zero must be adjusted before each measurement.
„ Once the zero has been adjusted, press the trigger of the clamp to open the jaws.
„ Clamp the cable carrying the current to be measured. Use the centring marks to help you centre the
cable inside the jaws of the clamp.
The arrow on the clamp must point in the presumed direction of current flow.
„ Release the trigger and check that the jaws are correctly closed.
„ The value measured is displayed on the measuring instrument.
If the OL indicator lights, it means that the current is too strong to be measured. If you are in the 10mV/A
range, switch to the 1mV/A range.
„ Apply the conversion factor corresponding to the setting of the switch.
PAC 26
PAC 25, PAC 26
To calculate the current in A, divide the reading in V on the measuring instrument by the coefficient.

2. USE

producer
source
Range 150 A
Range 1400 A
consumer
load
10 mV/A
1 mV/A
28