Mitsubishi Electric FR-A520-0.4K -55K Instruction Manual page 55

c) The safety earth should be as thick as possible, minimum thickness as stated in below table.
d) The earthing point should be as close to the inverter as possible, and the wire as short as possible.
e) The RFI earth should be a braided strap with a 10mm
possible.
f) The earths should be as far away from input and output cables (particularly to equipment sensitive to
RFI) as possible, and any distance where they are parallel should be kept to a minimum.
g) Design in RFI prevention before installation.
Motor Size
3.7kW or less
5.5kW, 7.5kW
11kW to 15kW
18.5kW to 37kW
45kW, 55kW
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INSTALLATION AND WIRING
2
minimum cross sectional area, and as short as
2
(Unit: mm )
Earth Wire Size
400V Class
2
3.5
8
14
22
44