Nidec Unidrive M200 Schritt-Für-Schritt-Anleitung Seite 18

Electrochemical corrosion of grounding terminals
Ensure that grounding terminals are protected against corrosion i.e. as could be caused by
condensation.
WARNING
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.
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.
WARNING
Table 12-1 Protective ground cable ratings
Input phase conductor size
2
≤ 10 mm
2
> 10 mm and ≤ 16 mm
2
> 16 mm and ≤ 35 mm
2
> 35 mm
18
Either 10 mm
input phase conductor
2
The same cross-sectional area as the input phase conductor
2 2
16 mm
Half of the cross-sectional area of the input phase conductor
Minimum ground conductor size
2
or two conductors of the same cross-sectional area as the
Unidrive M200/M201/M300 Step By Step Guide
Issue Number: 3