1
vacon • 5
Safety
The cross-sectional area of every protective earthing conductor which does not form a part of
the supply cable or cable enclosure shall, in any case, be not less than
•
2.5 mm
2
if mechanical protection is provided or
•
4 mm
2
if mechanical protection is not provided. For cord-connected equipment, provi-
sions shall be made so that the protective earthing conductor in the cord shall, in the
case of failure of the strain-relief mechanism, be the last conductor to be interrupted.
Figure 2. Earth connections and metal aglet in MM5.
However, always follow the local regulations for the minimum size of the protective earth-
ing conductor.
NOTE:
Due to the high capacitive currents present in the AC drive, fault current protective
switches may not function properly.
Metal aglet
Earth connections
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