Sonel MIC-5 Manual Del Uso página 26


During the measurement cycle, the buzzer
emits a short single signal every five seconds,
so it is possible to record the chronological
characteristics of the resistance of the insula-
tion under investigation.

During measurements the AUTO-OFF is not
active.

In the mode of voltage measurement the AUTO-
OFF countdown starts anew each time the volt-
age is changed by more than 5 V.

Once a measurement has been concluded,
the last result is shown on the display along
with the symbol
measurement disappears if there is a volt-
age exceeding 20 V at the measurement
terminals.
+
a continu-
ous double
tone sonic
signal
24
Additional information
displayed by the meter
The measured object is under a voltage
exceeding 20 V. The measurement is
blocked. During 5 s a double tone sonic
signal is generated, and then the meter
displays the voltage of the object. Dis-
connect the meter from the object
(both terminals) immediately.
There may be an attempt to discharge
the object before the measurement – It
will be signalled by means of the dis-
played symbol
charge is undertaken if the voltage ex-
ceeds 20 V, but is lower than 100 V.
The insulation resistance is too low, the
measurement is finished. The symbol is
displayed, if:

after 10 seconds from starting the
test, the measurement voltage has
not reached the adjusted value,

an overvoltage caused by insula-
tion breakdown is present during
the measurement.
The measurement range has been ex-
ceeded.
A warning regarding a high voltage at
the terminals of the meter.
The object is discharged.
MIC-5 – USER MANUAL
. The last result of the
. An attempt to dis-