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7
6.1.1 Cabling
Use cables with heat resistance of at least +70
°
C. The cables and the fuses must be dimensioned
according to the tables below. Installation of cables according to UL regulations is presented in
Chapter 6.1.4.
The fuses function also as cable overload protection.
These instructions apply only to cases with one motor and one cable connection from the frequency
converter to the motor. In any other case, ask the factory for more information.
1
st
environment
(restricted
distribution)
2
nd
environment
Cable type
Level H/C
Level L
Level T
Level N
Mains cable
1
1
1
1
Motor cable
3*
2
1
1
Control cable
4
4
4
4
Table 6-1. Cable types required to meet standards.
Level C
= EN 61800-3+A11, 1
st
environment, unrestricted distribution
EN
61000-6-3
Level H
= EN 61800-3+A11, 1
st
environment, restricted distribution
EN
61000-6-4
Level L =
EN61800-3,
2
nd
environment
Level T:
Level N:
1
= Power cable intended for fixed installation and
the specific mains voltage. Shielded cable not
required.
(NKCABLES/MCMK
or
similar recommended)
2
= Power cable equipped with concentric protection
wire and intended for the specific mains voltage.
(NKCABLES /MCMK or similar recommended).
3
= Power cable equipped with compact low-
impedance shield and intended for the specific
mains voltage.
(NKCABLES /MCCMK, SAB/ÖZCUY-J or similar recommended).
*360º earthing of both motor and FC connection required to meet the
standard
4
= Screened cable equipped with compact low-
impedance shield (NKCABLES /jamak,
SAB/ÖZCuY-O or similar).
Types MF4 – MF6: A cable entry flange should be used when installing the motor cable at both ends
in order to reach the EMC levels.
Note: The EMC requirements are fulfilled at factory defaults of switching frequencies (all
frames).
