MI 3394 CE MultiTesterXA
Instrument
operation
9
3.3 Symbols and 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 k
Ω
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.
Select
YES
to proceed with or
NO
to cancel
measurement.
Warning for improper supply voltage condition. If
pressing OK instrument will continue to work in a limited
mode (measurements are disabled).
