MI 3325 MultiServicerXD
20
Excessive load current through measuring I/O
’s,
Too low resistance between L and N of tested device,
Proper operation of safety relevant internal electronic circuits,
Presence of dangerous voltage on PE terminal of TP1 connector.
If a safety check fails, an appropriate warning message will be displayed and safety
measures will be taken. The warnings and safety measures are described in chapter
4.5
Symbols and messages
4.5.1 Warning messages
Supply voltage warning
Possible causes:
No earth connection.
Instrument is connected to an IT earthing
system. Press YES to continue normally or NO
to continue in a limited mode (measurements
are disabled).
Warning:
The instrument must be earthed properly to work
safely!
Resistance L-
N > 30 kΩ
In pre-test a high input resistance was measured.
Possible causes:
Device under test is not connected or switched
on
Input fuse of device under test is blown.
Select
YES
to proceed with or
NO
to cancel
measurement.
Resistance L-
N < 10 Ω
In pre-test a very low resistance of the device under
test supply input was measured. This can result in a
high current after applying power to the device under
test. If the too high current is only of short duration
(caused by a short inrush current), the test can be
performed otherwise not.
Select
YES
to proceed with or
NO
to cancel
measurement.
Resistance L-
N < 30 Ω
In pre-test a low input resistance of the device under
test was measured. This can result in a high current
after applying power to the device. If the high current is
only of short duration (caused by a short inrush current)
the test can be performed, otherwise not.
