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Cross-sectional area of phase conductors
(
S
)
[mm
2
]
Minimum cross-sectional area of the cor-
responding
protective earthing conductor
[mm
2
]
S
≤
16
16
<
S
≤
35
35 <
S
S
16
S
/2
The values above are valid only if the protective earthing conductor is made of the same metal as
the phase conductors. If this is not so, the cross-sectional area of the protective earthing con-
ductor shall be determined in a manner which produces a conductance equivalent to that which
results from the application of this table.
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, provisions
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.
However, always follow the local regulations for the minimum size of the protective earthing con-
ductor.
NOTE:
Due to the high capacitive currents present in the AC drive, fault current protective switches
may not function properly.
Do not perform any voltage withstand tests
on any part of Vacon 8000 Solar.
There is a certain procedure according to which the tests shall be performed.
Ignoring this procedure may result in damaged product.
