Measurements; Switching The Tester On And Off; Elimination Of Interferences; Insulation Resistance Measurement - Sonel MIC-5 Manual Del Uso

3.1

Switching the tester ON and OFF

To turn ON the meter, shortly press
turn OFF the meter – press and hold
approx. 2 sec.
3.2

Elimination of interferences

In order to effectively eliminate interferences, be-
fore the initial measurements it is recommended to
set the frequency of the power network for the giv-
en area (50 Hz or 60 Hz).
3.3 Insulation resistance measure-
ment
The device measures the insulation resistance
providing a test voltage U to the tested insulation
R and measuring flowing current I at the side of
X
the R probe, and measured at the R
ISO-
Calculating the insulation resistance value, the
meter uses the technical insulation measurement
method (R
lected between the two following values: 250 V or
500 V.
The level of the output current of the converter
is 1 mA. Activation of the current limitation is sig-
nalled by means of a continuous sonic alarm. The
result of the measurement is then correct, but at
the measurement terminals there is a measure-
ment voltage which is lower than the one adjusted
before the measurement. The current limitation
may occur particularly often in the first stage of the
measurement due to the process of charging of
the capacity of the measured object.
22

3 Measurements

=U/I). The measurement voltage is se-
X
MIC-5 – USER MANUAL
In order to change the
frequency:
 turn off the meter,
 turn on the meter by
holding
SEL button. The device
will display the frequen-
cy set at - 50 Hz (F50)
or 60 Hz (F60).
button. To
button for
the pressed
input.
ISO+