Special Functions; 2Nd Key; V-Time/ Key; R-Dar-Pi-Dd / R(T) Key - Chauvin Arnoux C.A 6545 Notice De Fonctionnement

4.1. 2nd KEY

This key is used to select the secondary functions of the function keys. It is always related to the
symbol.
This symbol disappears as soon as the selected function key is pressed, unless the
In this case, it disappears only if the 2nd key is pressed again or if other function keys are pressed. This is
used to rapidly decrement the parameters using the
4.2. V-TIME/ KEY
 V-TIME primary function
This key is used to show all available secondary information on the small display, both during and after
measurement.
In the insulation measurement function:
Time elapsed since the beginning of the measurement,

Measurement voltage,

In memory recall mode (MR) (C.A 6547): date, time, measurement voltage, measurement

duration and OBJ:TEST number.
 Secondary function
The small display shows the measurement duration programmed in the SET-UP, the symbol

is ON. Pressing the START key starts the measurement.
By default, the measurement lasts 30 minutes, but this value can be changed in the SET-UP

menu.
 As soon as the measurement has started, the small display decrements the remaining time.
 When this time reaches zero, measurement stops.
During the running of a programmed-time test, intermediate samples (resistance/voltage values as a
function of time) are automatically stored.
The time between samples is 30 s by default, but this value may be changed in the SET-UP menu.
The samples may be displayed using the R(t) function (see § 4.3) as long as a new measurement has
not been launched. They are erased at each new measurement.
They are automatically stored with the fi nal value of the resistance when using the MEM function (storage)
(C.A 6547).
If the position of the rotary switch is modifi ed, or if the STOP key is pressed during the measurement,
the measurement is aborted.

4.3. R-DAR-PI-DD / R(t) KEY

 R-DAR-PI-DD primary function
The R-DAR-PI-DD key is used to calculate automatically the Polarisation Index (PI) and the Dielectric
Absorption Ratio (DAR) or perform a Dielectric Discharge test (DD).
These PI and DAR values are particularly useful for monitoring the ageing of the insulation of rotating

4. SPECIAL FUNCTIONS

key without having to press the 2nd key each time.
(Programmed-time test)
53
nd
2
key is activated.