Operation Manual
MI 3310 / MI 3310A SigmaGT Instrument description
15
2.4 Warnings, messages and symbols
Warnings 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!
No mains voltage.
Connect PAT to mains
voltage.
Instrument not connected to the mains supply voltage.
For some measurements like differential / touch leakage
tests, PRCD / RCD tests and active polarity, operating the
instrument from mains voltage is required.
Connect the instrument to the mains voltage and start
selected test again.
L – N resistance 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.
It is recommended to additionally check the DUT before
proceeding with the test!