Chauvin Arnoux C.A 6543 Manual De Instrucciones página 41

4.1 Button
2nd
Use this button to select the second function activated by the buttons, it is always associated with the
symbol.
2nd
This symbol disappears upon pressing the function button chosen, except if the M button is activated.
In this case, it only disappears when the
pressed. This allows you to rapidly decrease parameters with the M button, without having to press the
button every time.
2nd
4.2 V-TIME /
I I I I I First function V-TIME
With this button, all the secondary information available can be displayed on the small display.
For insulation measurement:
- The time elapsed since the start of the measurement
- The voltage between the instrument's + and - terminals
- Date, time, test voltage and OBJ :TEST number in memory recall mode (MR)
For resistance or continuity measurement:
- Voltage between the instrument's + and – terminals
- Date, time, test voltage and OBJ :TEST number in memory recall mode (MR)
I I I I I Second function
- The small display indicates the measurement duration programmed in SET-UP, the
up. Pressing the START button commences measurement.
- The measurement duration is set to 15 minutes by default (programmed in during manufacturing).
- As soon as the measurement is commenced, the small display counts down the remaining duration of
the measurement.
Once this duration reaches zero, measurement stops.
As the time-controlled test is carried out, interval samples (resistance/voltage values as a function of
time) are automatically saved.
The time between each sample is set to 30 s by default, but this value can be changed in the SET-UP menu.
The samples are displayed with the R (t) function (see § 4.3) as long as a new measurement has not
been commenced. With each new measurement, the previous sample value is erased from the memory.
These sample values are saved with the last value of the resistance if used with the MEM (memory
storage) function.
!
If the selector switch's position is altered, or if the STOP button is pressed during measurement,
then measurement is interrupted.
This function is only active for insulation measurement.
4.3 R-DAR-PI / R (t) Button
I I I I I First function R-DAR-PI
The R-DAR-PI button allows automatic measurement of the Polarisation Index (PI) and the Dielectric
Absorption Ration (DAR).
These two parameters are particularly useful when monitoring the ageing of insulation on electrical
machines or on long cables for example.
4. SPECIAL FUNCTIONS
button is pressed again or if other function buttons are
2nd
Button
(time-controlled test)
41
symbol lights