MI 3321 MultiservicerXA
Instrument description
14
- Short circuit or too low resistance between L and N of tested device,
- Correct input mains voltage,
- Input PE connection.
If pre-tests fail, an appropriate warning message will be displayed.
The warnings and measures are described in chapter
2.3 Symbols and messages
.
2.3 Symbols and messages
Mains voltage is not
correct or PE not
connected.
Check mains voltage
and PE connection!
Warning for improper supply voltage condition. Possible
causes:
- No earth connection or other wiring problem on
supply socket.
- Incorrect mains voltage.
Determine and eliminate the problem before proceeding!
Warning:
-
The instrument must be earthed properly!
Warning!
Instrument is
connected to the IT
earthing system or PE
not connected.
Press START key to
continue.
Supply voltage warning. Possible causes:
- No earth connection,
- Instrument connected to an IT earthing system.
Press the START key to continue if instrument is connected
to the IT supply system.
Warning:
-
The instrument must be properly earthed!
Resistance L
– N too
high (>30 k
).
Check fuse and switch.
Are you sure to
proceed? (Y/N)
An excessively high resistance was measured in the fuse
pre-test. Indication means that tested device has too low
consumption or is:
- Not connected,
- Switched off,
- Contains a fuse that has blown.
Select
YES
or
NO
with Y or N key.
Resistance L
– N low.
Are you sure to
proceed? (Y/N)
A low resistance of the device under test (DUT) supply input
was measured in the pre-test. This means that it is very
likely that an excessively high current will flow after applying
power to the DUT. If the high current is only of short duration
(caused by a short inrush current) the test can be performed,
otherwise not.
Select
YES
or
NO
with Y or N key.
Resistance L
– N too
low.
Are you sure to
proceed? (Y/N)
An extremely low resistance of the DUT supply input was
measured in the pre-test. It is likely that fuses will blow after
applying power to the DUT. If the too high current is only of
short duration (caused by a short inrush current) the test can
be performed otherwise it must be stopped.
Select
YES
or
NO
with Y or N key.
