Figure 5.2.4 Test procedure runningg
e insulation resistance test is completed after ap-
prox. 1 to 3 seconds and the test instrument now
displays the test result. The UNITEST 0100 ELEC-
TROcheck works with a limit value of 1 M
Ω
. The in-
sulation resistance measured is evaluated and di-
rectly displayed as result “OK” (10) “OK” ?? (6)
together with the
symbol (14). Additionally the
green LED behind the LC display is illuminated in-
dicating that the test has been completed success-
fully. The illumination of the red LED indicates that
the test result has been unsuccessful.
Figure 5.2.5 Test result with limit value met
Figure 5.2.6 Test result with limit value not met
The test may take up to 10 seconds for UUTs
with high capacitive shares (e.g. in the event of
very long cables or conductors).
The test will not be carried out if a voltage is
present at the test leads. The test instrument
indicates the following together with an addi-
tional acoustic signal when starting the test.
Figure 5.2.7 Foreign voltage present
14
Testing the Insulation Resistance
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