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Mentor MP User Guide 35
Issue: 3 www.controltechniques.com
4.2 Ground connections
The drive must be connected to the system ground of the AC supply.
The ground wiring must conform to local regulations and codes of
practice.
Figure 4-3 Location of ground connection on size 1 drives
Figure 4-4 Location of ground connections on size 2A / 2B drives
Figure 4-5 Location of ground connections on size 2C / 2D drives
Where there is a possibility of temporary condensation or
corrosion occurring, the ground connection should be
protected from corrosion by suitable jointing compound.
Ground loop impedance
The ground loop impedance must conform to the
requirements of local safety regulations.
The drive must be grounded by a connection capable of
carrying the prospective fault current until the protective
device (fuse, etc,) disconnects the AC supply.
The ground connections must be inspected and tested at
appropriate intervals.
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