HT COMBITEST422, User Manual

Page: 35 / 111

COMBITEST422
EN - 35
" 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.
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
"
Measur
ing…
" 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 durati
on ≥ 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
6.5.2. AUTO mode
1. With the arrow keys (

,

) select the "AUTO" option in
M

15/10
– 18:04