Chauvin Arnoux C.A 6549 Bedienungsanleitung Seite 72

 TIMED RUN:
(Timed run test)
This mode is used to perform a measurement for a
duration defi ned in advance, with a predetermined
number of measurement samples: the measurement
is started by pressing START / STOP and stops
automatically after the time programmed by the user.
This duration (Duration) and the time interval
between samples (Sample) can be modifi ed using
the , , and keys when the Timed Run
mode is selected.
When the measurement is started, the chronometer counts down the time remaining. When this time
(Remaining Time) is zero, the measurement is stopped.
During the execution of a timed run test, the intermediate samples are automatically stored: they are used
to plot insulation resistance vs. time. This curve can be displayed after the measurement by pressing
the GRAPH key, as long as no new measurement has been started.
The samples are automatically stored with the fi nal value of the resistance, if it is stored.
During the measurement, if the position of the rotary switch is changed, or the STOP key is pressed,
the measurement is stopped.
 TIMED RUN + DD:
This mode is identical to the previous one except
that 1 minute after the end of the measurement the
instrument calculates and displays the DD term.
The measurement duration is therefore: duration of
timed run + 1 minute.
The insulation resistance vs. time curve can be
displayed after the measurement by pressing
GRAPH, as long as no new measurement has been
started.
 DAR:
The measurement is started by pressing START /
STOP and stops automatically when the DAR ratio
has been calculated, i.e. after 1 minute, the time for
measuring the second insulation resistance value
needed for the calculation (the sample time can be
modifi ed with the , , and keys).
72
MODE
Total Run Time
Manual Stop
Manual Stop + DD
Duration Sample
(h:m)
Timed Run 02:30
Timed Run + DD
DAR (s/s)
PI (m/m)
MODE
Total Run Time
Manual Stop
Manual Stop + DD
Duration Sample
(h:m)
Timed Run 02:30
Timed Run + DD
DAR (s/s)
PI (m/m)
MODE
Total Run Time
Manual Stop
Manual Stop + DD
Duration Sample
(h:m)
Timed Run 02:30
Timed Run + DD
DAR (s/s)
PI (m/m)
02:30:00
(m:s)
00:10
30/60
1.0/10
02:30:00
(m:s)
00:10
30/60
1.0/10
00:01:00
(m:s)
00:10
30/60
1.0/10