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76 Powerdrive F300 User Guide
Issue Number: 2
Size 7
On size 7, the supply and motor ground connections are made using the
M8 studs located by the supply and motor connection terminals.
Size 8 to 11
On size 8 to 11, the supply and motor ground connections are made
using the M10 studs located by the supply and motor connection
terminals.
Figure 4-12 Size 7 to 10 ground connections
1. Ground connection studs.
Figure 4-13 Size 11E ground connections
Table 4-1 Protective ground cable ratings
4.2 AC supply requirements
Voltage:
200 V drive: 200 V to 240 V ±10 %
400 V drive: 380 V to 480 V ±10 %
575 V drive: 500 V to 575 V ±10 %
690 V drive: 500 V to 690 V ±10 %
Number of phases: 3
Maximum supply imbalance: 2 % negative phase sequence (equivalent
to 3 % voltage imbalance between phases).
Frequency range: 45 to 66 Hz
For UL compliance only, the maximum supply symmetrical fault current
must be limited to 100 kA
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.
Input phase
conductor size
Minimum ground conductor size
≤ 10 mm
2
Either 10 mm
2
or two conductors of the
same cross-sectional area as the input
phase conductor.
> 10 mm
2
and ≤ 16 mm
2
The same cross-sectional area as the input
phase conductor
> 16 mm
2
and ≤ 35 mm
2
16 mm
2
> 35 mm
2
Half of the cross-sectional area of the input
phase conductor
11E
Supply
ground
Motor
ground
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