OPERATING MANUAL MIC-2 ver. 1.8
During an insulation resistance measurement,
it is unacceptable to disconnect the cables
from the object under investigation before the
measurement has concluded; otherwise the
capacity of the object will not be discharged,
what gives rise to a danger of electric shock.
Do not operate a meter with an open or incor-
rectly closed battery (accumulator) compart-
ment or power it from other sources than those
specified in the present manual.
The meter’s inputs are electronically protected
from power surge up to 660V for 30 seconds.
Repairs may be realised solely by an author-
ised service point.
The device complies with the following stand-
ards: PN-EN 61010-1 and PN-EN 61557.
2 Measurements
In order to effectively eliminate interferences,
before the initial measurements it is recommended
to set the frequency of the power network for the
given area (50Hz or 60Hz). In order to do so:
2.1 Insulation resistance meas-
urement
The device measures the insulation resistance
providing a test voltage U to the tested insulation
R
X
and measuring flowing current I at the side of
the R
ISO-
probe, and measured at the R
ISO+
input.
Calculating the insulation resistance value, the me-
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