COMBITEST422
EN - 46
6.6.5. Anomalous situations
1. If the instrument detects a frequency higher than the
maximum limit (63Hz), it does not carry out the test and
displays a screen like the one to the side.
R C D
15/10
– 18:04
TT
T
Ut
=
=
- - -
- - -
ms
V
FREQ. = >63Hz
VL-PE=231V VL-N=234V
Freq. out of range
X1
30mA
+
MODE
I
n
Type
Ut
2. If the instrument detects a L-N or L-PE voltage lower than
the minimum limit (100V), it does not carry out the test
and displays a screen like the one to the side. Check that
the system being tested is supplied
R C D
15/10
– 18:04
TT
T
Ut
=
=
- - -
- - -
ms
V
FREQ. = 0.00 Hz
VLPE=<100V VL-N=<100V
Voltage <100V
X1
30mA
+
MODE
I
n
Type
Ut
3. If the instrument detects a L-N or L-PE voltage higher
than the maximum limit (265V), it does not carry out the
test and displays a screen like the one to the side. Check
the connection of measuring cables.
R C D
15/10
– 18:04
TT
T
Ut
=
=
- - -
- - -
ms
V
FREQ. = 50.00 Hz
VLPE=>265V VL-N=>265V
Voltage >265V
X1
30mA
+
MODE
I
n
Type
Ut
4. If the instrument detects a dangerous voltage on PE
conductor, it provides the warning screen shown to the
side and blocks the execution of the tests. Check the PE
conductor and earth connection efficiency.
R C D
15/10
– 18:04
TT
T
Ut
=
=
- - -
- - -
ms
V
FREQ. = 0.00Hz
VL-PE=- - -V
VL-N=- - -V
Voltage on PE
X1
30mA
+
MODE
I
n
Type
Ut
