Chauvin Arnoux C.A 6543 Manual De Instrucciones página 39

3. MEASUREMENT FUNCTIONS
3.1 AC / DC Voltage
Select any insulation, resistance or continuity measurement position with the rotary selector switch and
the device is automatically in AC / DC voltage measurement mode. The voltage is permanently measured
and is shown on the small display.
Proceeding with a measurement is prohibited if an external voltage is present at the terminals before
pressing START / STOP. Similarly, if an interference voltage is detected during measurement, the
measurement is stopped and the voltage indicated.
3.2 Insulation measurement
As soon as one of the MΩ positions has been selected, the main display shows "- - - - MΩ", and the
small display indicates the voltage present at the device's + and - terminals.
! If the external voltage present at the device's terminals exceeds the thresholds shown on the
table below, then pressing the yellow START / STOP button does not bring about insulation measurement
but instead triggers a discontinuous audible signal (beep, beep, beep, ...) and the
2 seconds, then the device goes back to automatic voltage measurement.
! If the external voltage present at the device terminals is below the thresholds shown below, then
insulation measurement can go ahead:
Test Max voltage allowed
voltage for measurement
50 V
100 V
250 V
500 V
1000 V
Pressing START immediately begins the measurement. The measurement value is displayed on the
main digital display and on the bar graph. An audible beep is given out every 10 seconds to indicate that
measurement is in progress.
!
If the generated voltage is liable to be dangerous (> 120 V), the
If, during insulation measurement, an external voltage > 25 V
measurement is stopped as long as the voltage is applied to the instrument. The
flashes and the voltage value is indicated on the small digital display.
If the measurements fluctuate greatly, it is possible to use the SMOOTH function (see § 4.5).
By pressing the V-TIME button during measurement you can alternate between displaying, on the small
display, the duration of the voltage measurement and the exact voltage generated (see § 4.2).
Pressing the STOP button stops the measurement.
After the measurement has been stopped the main result remains displayed.
It is possible to scroll down all the other results available on the main display using the R-DAR-PI button.
This button can also be used before measurement is begun (see § 4.3).
If the "Time-controlled test" mode has been selected, the R (t) button makes it possible to access all the
saved interval measurements automatically. (see § 4.2 and 4.3).
If the ALARM function is activated, a buzzer is triggered as soon as the measurement crosses the
threshold programmed in the SET-UP configuration menu (see § 4.4).
8 V
16 V
50 V
50 V
50 V
39
symbol flashes for
!
symbol is displayed.
±3 V or 35V is detected, the
AC DC
!
symbol