3.4.2
Measuring the insulation resistance
Fundamentals
Tests are performed in accordance with IEC 62103.
The insulation resistance of the individual circuits is measured before and after the high-voltage
test, and the following value must be obtained:
Rated operating voltage
Insulation resistance
Below 1000 V
At least 1 MΩ
Above 1000 V
At least 10 MΩ
Test equipment
A calibrated test instrument is used for the test.
Test procedure
1. The circuits to be tested are separately short-circuited corresponding to the individual
voltage levels.
– Power circuit/circuits
– Various auxiliary circuits
2. The circuits that are presently not connected to the test instrument are connected to ground
potential.
3. The test voltage is adjusted for each circuit corresponding to the insulation test report.
4. The circuits are tested with respect to one another and with respect to the PE protective
conductor at the electrical cabinet.
Result
The test is passed if the insulation resistances lie within the tolerance specified by the standard.
Tests
3.4 Insulation test
SINAMICS SL150 6SL3860 F03 F70 F98 F79 F76
Reference Manual Rev.201902141425 SL150 luftgekühlt
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