Submittal Sheet

SMARTVFD HVAC2
9 31-00109EF—01
CABLING AND FUSES
Use cables with heat resistance of at least 158 °F (70 °C). The cables and the fuses must be dimensioned according to the
tables below.
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.
Table 9. Cable types required to meet standards.
EMC category cat. C2 cat. C4
Mains cable types 1 1
Motor cable types 3 1
Control cable types 4 4
Table 10. Cable type descriptions.
Cable type Description
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).
Table 11. Cable and fuse sizes for SmartVFD HVAC2, 115 V, 1~.
Frame Horsepower
Fuse
[A]
Mains cable
Cu [AWG]
Motor cable
Cu [AWG]
Terminal cable size (min/max)
Main
terminal
[AWG]
Earth
terminal
[AWG]
Control
terminal
[AWG]
Relay
terminal
[AWG]
MI2 .33-1HP 20 2*14+14 3*16+16 16-12 16-12 20-16 20-16
MI3 1.5HP 32 2*10+10 3*16+16 16-12 16-12 20-16 20-16
Table 12. Cable and fuse sizes for SmartVFD HVAC2, 208 - 240 V, 1~.
Frame Horsepower
Fuse
[A]
Mains cable
Cu [AWG]
Motor cable
Cu [AWG]
Terminal cable size (min/max)
Main
terminal
[AWG]
Earth
terminal
[AWG]
Control
terminal
[AWG]
Relay
terminal
[AWG]
MI1 .33-.75HP 10 2*16+16 3*16+16 16-12 16-12 20-16 20-16
MI2 1-2HP 20 2*14+14 3*16+16 16-12 16-12 20-16 20-16
MI3 3HP 32 2*10+10 3*16+16 16-10 16-10 20-16 20-16