Electrical Connections - Atlas Copco GA 37 VSD Instruction Book

Instruction book
5.3

Electrical connections

Important remark
API480496
Working with machinery controlled by a frequency converter requires special safety
precautions. These safety precautions depend on the kind of network used (TN, TT, IT
system). Consult Atlas Copco.
Most compressors are designed for use in TT/TN networks and are intended for
industrial environments where the electrical supply is separated from the residential/
commercial supply network.
To use the machine in light industrial, commercial or residential environments with a
shared supply network or in an IT network, extra measures can be required. Contact
Atlas Copco.
Set the switch (S) on (I) for use in a TT/TN network, and set the switch off (O) for use in
an IT network.
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