Siemens SINAMICS G120C Operating Instructions Manual page 439

Second environment - category C3
Immunity
The converters comply with the requirements of the standard.
Interference emission for unfiltered converters
Converters with integrated filter comply with the requirements of the standard.
Cable-conducted, high-frequency noise emission of an unfiltered converter
Either install an external filter for the converter - or install corresponding filters at the system
level.
Further information is provided on the Internet:
support.industry.siemens.com/cs/ww/en/view/109750634)
Field-conducted, high-frequency noise emission of an unfiltered converter
When installed professionally in accordance with EMC guidelines, the converters fulfill the
requirements of the standard.
Second environment - category C2
Immunity
The converter is suitable for the "second environment".
Emitted interference
The converters fulfill the requirements of the standard when the following conditions are
satisfied.
• You are using a converter with an integrated filter.
• The converter is connected to a TN or TT line supply with grounded neutral point.
• You use a shielded motor cable with low capacitance.
• You maintain the permissible motor cable length.
• Converter and motor have been installed in compliance with EMC, carefully taking into
consideration the installation notes.
• Condition for the converter pulse frequency:
– FSAA ... FSC: Pulse frequency < 4 kHz
– FSD ... FSF: The pulse frequency is not higher than the value set in the factory.
First environment - category C2
To enable you to use the converter in the first environment, during installation you must observe
the limit values for the cable-conducted, low-frequency disturbance variables (harmonics)
in addition to the limit values for the "second environment - category C2".
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK
Compliance with EMC limits with unfiltered devices
Maximum permissible motor cable length (Page 80)
11.9 Electromagnetic compatibility of the converter
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Technical data
437