Installation Guide | iC7-Automation Air-cooled Enclosed Drives Electrical Installation
3 Electrical Installation
3.1 Grounding Principles
Ground the AC drive in accordance with applicable standards and directives.
According to IEC 60364-5-54; 543.1, unless local wiring regulations state otherwise, the cross-sectional area of the protective grounding
conductor must be at least ½ times of the phase conductor and made of the same material when the phase conductor cross-section is
above 35 mm
2
(AWG 2).
The connection must be fixed.
3.2 Prerequisites for Cable Installation
l Before starting, make sure that none of the components of the AC drive are live. Read all safety precautions in this guide and other
documents available for this product.
l Make sure that the motor cables are sufficiently far from other cables.
l The motor cables must across other cables at an angle of 90°.
l If possible, do not route the motor cables in long parallel lines with other cables.
l If the motor cables are in parallel with other cables, obey the minimum distances (see
Table 1).
l The distances are also valid between the motor cables and the signal cables of other systems.
l The maximum length of shielded motor cables is 150m (492ft). If the used motor cables are longer, contact the vendor for more
information.
l Check the maximum cable length of the filters.
l Only use symmetrical and shielded motor cables.
l Check the insulation resistance of cables if necessary.
Table 1: Minimum Distances from Motor Cables to Other Cables
Distance to other cables [m (ft)] Length of the shielded cable [m (ft)]
0.3 (1.0) ≤ 50 (164)
1.0 (3.3) ≤ 150 (492)
Danfoss Drives Oy © 2024.09 AN484843731544en-000101 / 172K4825A | 11
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