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Do not
remove the test lead immediately. Wait until the discharge
is complete before touching the circuit under test.
In order to ensure the measurement accuracy, do not twist the
test lines together.
Guaranteed temperature and humidity of the insulation resistance accuracy
Insulation
resistance
range
resistance accuracy
Guaranteed temperature of
the insulation resistance
accuracy
0Ω-100MΩ <85% RH(No condensation)
23℃±5℃
101MΩ-20GΩ <75% RH(No condensation)
21GΩ-200GΩ <65% RH(No condensation)
Insulation resistance test can only be carried out on an uncharged
circuit. Before testing, check that the test leads are good and confirm that
the circuit under test is uncharged.
Turn the rotary switch to gear, then press VSEL to select the voltage
value to be tested.
One end of the ground wire (black) is connected to the instrument
connection EARTH and the other end is connected to the ground end of the
circuit under test. One end of the high-voltage rod test line (red) is
connected to the other end of the instrument LINE and the head is in contact
with the circuit under test.If the test has a green branch line as a shielded
line, the accuracy of connecting the GUARD port during testing is better.
If the matching test line does not carry this line, it does not need to be
connected. As shown in the figure, press the TFRT test button. The LCD shows
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