Electrical Installation Considerations; Cable Requirements - Danfoss iC7 Series Design Manual

Design Guide | iC7 Series Air-cooled System Modules

Electrical Installation Considerations

6

Cable Requirements

6.1
Follow these requirements for the mains and motor cables used in the drive system.
Select and install mains cables and motor cables according to the local safety regulations, the input voltage, and the load current of
l
the drive.
Use motor cables rated for at least 70 °C (158 °F) surface temperature. If sufficient airflow at motor cable terminals in the cabinet
l
cannot be ensured, use cables rated for 90 °C (194 °F). Consider the operating temperature of the mains terminals and make sure
that the mains cables do not overheat near the input terminals.
Use symmetrical power cabling with power units connected in parallel. Each power unit must have the same number of cables with
l
an equal cross-section and equal length.
The maximum number of power unit cables and bolts sizes can be found in
Only use symmetrical and shielded 3-phase motor cables.See
individual shield for each phase conductor or single-core phase conductors and PE with or without shield, see
To reach C3 EMC performance, use shielded motor and mains cables.
1
3
Figure 15: Recommended Cable Types for Mains and Motor Cabling
1
PE conductor and shield
3
Shield
1
2
2
Figure 16: Not Recommended Motor Cable Types
1
PE conductor
Information related only to UL cable recommendation:
Use 75 °C (167 °F) rated copper cables only.
l
Danfoss Drives Oy © 2024.03
2
3
1
10.4.1 General Cable Size
Figure 15. Do not use symmetrical and shielded 3-phase cable with
2
2
PE conductor
2
Shield
Information.
Figure 16.
AJ389643111587en-000101 / 172F6361A |
31