Cable Requirements - Danfoss iC7-60EA3N05-206A Operating Manual

iC7-Automation Air-cooled Enclosed Drives
Operating Guide
ELECTRICAL SHOCK HAZARD - LEAKAGE CURRENT HAZARD
Leakage currents exceed 3.5 mA. Failure to connect the drive properly to protective earth (PE) can result in death or serious in-
jury.
-
Ensure reinforced protective earthing conductor according to IEC 60364-5-54 cl. 543.7 or according to local safety regula-
tions for high touch current equipment. The reinforced protective earthing of the drive can be done with:
-
a PE conductor with a cross-section of at least 10 mm
-
an extra PE conductor of the same cross-sectional area as the original PE conductor as specified by IEC 60364-5-54 with a
minimum cross-sectional area of 2.5 mm
-
a PE conductor completely enclosed with an enclosure or otherwise protected throughout its length against mechanical
damage.
-
a PE conductor part of a multi-conductor power cable with a minimum PE conductor cross-section of 2.5 mm
(permanently connected or pluggable by an industrial connector. The multi-conductor power cable shall be installed with an
appropriate strain relief).
-
NOTE: In IEC/EN 60364-5-54 cl. 543.7 and some application standards (for example IEC/EN 60204-1), the limit for requiring
reinforced protective earthing conductor is 10 mA leakage current.

6.4 Cable Requirements

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 cur-
rent of the drive.
• Use motor cables rated for +90 °C for IEC, +75 °C (167 °F) for UL. Consider the operating temperature of the mains terminals, and
make sure that the mains cables do not overheat near the mains terminals.
• Use symmetrical cabling with parallel power units. Each power unit must have the same number of cables with an equal cross-
section and equal length.
Maximum number of power unit cables and bolts sizes can be found in
Only use symmetrical and shielded 3-phase mains and motor cables. See
phase cable with individual shield for each phase conductor or single-core phase conductors and PE with or without shield, see
Illustration 16.
1
3
Illustration 15: Recommended Cable Types for Mains and Motor Cabling
1 PE conductor and shield
2 PE conductor
32 | Danfoss A/S © 2023.09
W A R N I N G
2
(8 AWG) Cu or 16 mm
2
(14 AWG) (mechanical protected) or 4 mm
2
3
2
(6 AWG) Al.
2
(12 AWG) (not mechanical protected).
10.5.1 General Cable Size
Illustration 15. Do not use symmetrical and shielded 3-
2
3 Shield
AQ330347384398en-000201 / 139Z8096
Electrical Installation
2
(14 AWG)
Information.