Table 8: Recommendations for Cables
Cable type
Category C4 (Level T)
Supply cable
Power cable intended for fixed installation and the specific DC voltage. Shielded cable not required. (NKCABLES/
MCMK or similar recommended)
Motor cable
Power cable equipped with concentric protection wire and intended for the specific mains voltage. (NKCABLES/
MCMK or similar recommended).
Control cable
Shielded cable equipped with compact low-impedance shield (NKCABLES/jamak, SAB/ÖZCuY-O or similar).
For the definitions of EMC protection levels, see IEC/EN 61800-3 + A1.
A
C
B
e
3
0
b
g
0
7
9
.1
0
A
The PE conductor and the shield
C
The shield
B
The PE conductors
Illustration 13: Cables with PE Conductors
In all the enclosure sizes, to comply with the EMC standards, use the default values of the switching frequencies.
If installing a safety switch, make sure that the EMC protection continues from the start of the cables until their ends.
The drive must obey the standard IEC 61000-3-12. To obey it, the short circuit power S
SC
must be a minimum of 120 R
SCE
at the
interface point between mains and the public mains. Make sure to connect the drive and the motor to mains with a short circuit power
S
SC
that is a minimum of 120 R
SCE
. If necessary, contact the mains operator.
6.4 Get Access and Locate the Terminals
6.4.1 Get Access and Locate the Terminals for FR4/FI4
Context:
Follow these instructions to open the AC drive for installing the cables, for example.
Electrical Installation
Operating Guide | VACON® NX Inverters FI4-FI8
AQ299433367205en-000101 / DPD00908
40 | Danfoss A/S © 2019.07
Summary of Contents for VACON NX FI6
Page 1: ...Operating Guide VACON NX Inverters FI4 FI8...
Page 2: ......
