COMBI521
EN - 35
6.5.1. TMR mode
1.
With the arrow keys
(
,
)
select the "TMR" option in the
"
Mode
" section. The instrument displays a screen like the
one shown to the side. Set the duration of the
measurement in the "
Time
" section and follow the steps
from point 2 to point 5 of §
6.4.
M
15/10 – 18:04
R
=
- - - M
Vt = - - - V
T = - - - s
PI = - - -
DAR = - - -
TMR 500V 1.00M
10s
MODE
Vtest Lim. Time
2. Press the
GO/STOP
key
on the instrument or the
START
key on the remote switch probe. The instrument starts the
measurement for the entire duration set, showing the
"
Measuring…
" message. The instrument shows the
message "
OK
" on the display in case of a positive result
(value higher than the set minimum threshold) or "
NOT
OK
" in case of a negative result (value lower than the
minimum limit set).
M
15/10 – 18:04
R
=
1 0 2 M
Vt = 523V
T = 10 s
PI = - - -
DAR = - - -
OK
TMR 500V 1.00M
10s
MODE
Vtest Lim. Time
3. With a
measurement duration
≥
60s
, the instrument
shows the indication of the DAR parameter (Dielectric
Absorbtion Ratio) as shown in the screen to the side.
M
15/10 – 18:04
R
=
1 0 2 M
Vt = 523V
T = 60 s
PI = - - -
DAR = 1.03
OK
TMR 500V 1.00M
60s
MODE
Vtest Lim. Time
4. With a
measurement duration
≥
600s
, the instrument
shows the indication of the DAR parameter (Dielectric
Absorbtion Ratio) and of the PI prameter (Polarisation
Index) as shown in the screen to the side.
M
15/10 – 18:04
R
=
1 0 2 M
Vt = 523V
T = 600 s
PI = 1.00
DAR = 1.03
OK
TMR 500V 1.00M
600s
MODE
Vtest Lim. Time
