1
vacon • 8
Safety
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
Figure 2. Protective grounding connections MU2, single-phase version.
In VACON
®
20 X, the phase conductor and the corresponding protective grounding conductor can
be of the same cross-sectional area, provided they are made of the same metal (because the cross-
sectional area of the phase conductor is less than 16 mm
2
).
The cross-sectional area of every protective grounding conductor which does not form a part of the
supply cable or cable enclosure must not, in any case, be 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, provisions
shall be made so that the protective groundingconductor in the cord must, in the case of
failure of the strain-relief mechanism, be the last conductor to be interrupted.
However, always follow the local regulations for the minimum size of the protective grounding
conductor.
NOTE:
Due to the high capacitive currents present in the AC drive, fault current protective switches
may not function properly.
