COMBI521
EN - 37
6.5.3. Anomalous situations
1.
If the instrument fails to generate the nominal voltage, it
emits a long acoustic signal to indicate the negative result
of the test and displays a screen like the one at the side.
M
15/10 – 18:04
R
V t
T
=
=
=
0 . 0 1 M
0 V
3 s
NOT OK
MAN 500V 1.00M
L-PE
MODE
Vtest Lim. FUNC
2.
At the end of the test, if the measured resistance value is
lower than the set limit, the instrument emits a long
acoustic signal to indicate the negative result of the test
and displays a screen like the one at the side.
M
15/10 – 18:04
R
V t
T
=
=
=
0 . 2 9 M
5 3 4 V
3 s
NOT OK
MAN 500V 1.00M
L-PE
MODE
Vtest Lim. FUNC
3.
In AUTO mode, if the insulation measurement L-N is
<50k
= 0.05M
, all the tests are completed or if the
STOP
key has been pressed, if RL-PE and RN-PE> Lim
and Vt> Vnom, the instrument shows a screen like the
one at the side. Disconnect the loads and resume the
test.
M
15/10 – 18:04
RL-N
=
0.01M
Vt
=
15 V
RL-PE > 999 M
Vt = 525 V
RN-PE > 999 M
Vt = 524 V
Not OK – Check loads
AUTO 500V 1.00M
MODE
Vtest Lim.
4.
At the end of the test, if the value of the test voltage is
lower than the nominal value, the instrument displays a
screen like the one at the side.
M
15/10 – 18:04
R
V t
T
=
=
=
0 . 1 2 M
4 8 5 V
3 s
Vtest not correct
MAN 500V 1.00M
L-PE
MODE
Vtest Lim. FUNC
