Insulation Test - Siemens SINAMICS S120 Manual

Cabinet design and EMC
7.1 Information
7.1.3

Insulation test

Insulation test
In accordance with EN 60204-1, an insulation test must be performed on the
machine/system.
The test may be done with one of the following tests:
● Insulation resistance test
● Voltage test
Disconnect from the power supply
Disconnect the machine/system from the line supply prior to testing.
Insulation resistance testing
Insulation resistance testing should be preferably carried out. The insulation resistance when
carrying out the test must not be less than 1 MΩ Testing is carried out with 500 V DC
between the main-circuit conductors
carried out on individual sections of the system.
Exception: A lower resistance value is permissible for certain components of the electrical
equipment; however, the value must not be lower than 50 kΩ.
SINAMICS components are covered by this exception. They must therefore be disconnected
during testing and tested separately.
Voltage test
Use test equipment according to EN 61180-2
Test equipment to EN 61180-2 should be used for voltage testing.
The rated frequency for the test voltage must be 50 Hz or 60 Hz.
The maximum test voltage must be either twice the rated voltage value for the equipment
power supply or 1000 V. The higher of the two values should be used. The maximum test
voltage must be applied between the conductors of the main circuits
conductor system for approx. 1 s.
Components and devices that are not rated to withstand this test voltage must be
disconnected prior to testing.
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WARNING
WARNING
and the protective conductor system. Testing may be
1)
Manual, (GH3), 01/2013, 6SL3097-4AE00-0BP3
and the protective
1)
Chassis power units