34 • vacon
CABLING AND CONNECTIONS
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.
Tables 6-2 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.
Cable type
Level L
(2
nd
environment)
Level T
Mains cable
1
1
Motor cable
2
1/2*
Control cable
4
4
Table 6-1. Cable types required to meet standards
*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).
Note: The EMC requirements are fulfilled at factory defaults of switching frequencies (all frames).
Clearwater Tech - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.clrwtr.com - Email: [email protected]
