CABLING AND CONNECTIONS
vacon • 37
24-hour s358 (0)201 212 575 • Email: [email protected]
6
For more detailed cable installation instructions, see Chapter 8, step 6.
Use cables with a temperature rating of at least +70
°
C. As a rule of thumb, cables and the fuses
can be dimensioned according to the frequency converter nominal OUTPUT current which you can
find on the rating plate. Dimensioning according to the output current is recommended because the
frequency converter input current never significantly exceeds the output current.
Table 13 and show the minimum dimensions of Cu- and Al-cables and the recommended aR fuse
sizes.
If the motor temperature protection of the drive (see Vacon All in One Application Manual) is used
as an overload protection, the cable should be chosen accordingly. If three or more cables are used
parallelly (per block) in bigger units each cable requires a separate overload protection.
NOTE!
The EMC requirements are fulfilled at factory defaults of switching frequencies (all frames).
Table 12. Cable types required to meet standards
Cable type
Level L
(2
nd
environment)
Level T
Mains cable
1
1
Motor cable
2
1/2*
Control cable
4
4
*Recommended
Level L
=
EN61800-3, 2
nd
environment
Level T
=
For IT networks
1
=
Power cable intended for fixed installation and the specific mains voltage.
Shielded cable not required (DRAKA NK CABLES - MCMK or similar
recommended).
2
=
Symmetrical power cable equipped with concentric protection wire and intended
for the specific mains voltage (DRAKA NK CABLES - MCMK or similar
recommended).
4
=
Screened cable equipped with compact low-impedance shield (DRAKA
NKCABLES - JAMAK, SAB/ÖZCuY-O or similar).
