ABB ACS 400 User Manual page 173

Cabling Instructions
Keep individual unscreened wires between the cable clamps and the screw terminals as short as
possible. Route control cables away from power cables.
Mains Cable
A four conductor cable (three phase with protective earth) is recommended for the mains cabling.
Shielding is not necessary. Dimension the cables and fuses in accordance with the input current.
Always pay attention to local legislation when sizing the cables and fuses.
The mains input connectors are at the bottom of the converter unit. Mains cable routing must be
done so that the distance from the sides of the converter is at least 20 cm to avoid excessive
radiation to the mains cable. In the case of shielded cable, twist the cable screen wires together into
a bundle not longer than five times its width and connect to the PE terminal of the converter. (Or PE
terminal of input filter, if present.)
Motor Cable
The motor cable must be a symmetrical three conductor cable with a concentric PE conductor or a
four conductor cable with a concentric shield, however, a symmetrical constructed PE conductor is
always recommended. Minimum requirement for the motor cable screen is presented in Figure 66.
Copper wire screen
Helix of copper tape Inner insulation
Insulation jacket
Cable core
Figure 66 Minimum requirement for motor cable screen (e.g. MCMK, NK Cables).
162 ACS 400 User's Manual
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