4
vacon • 30
Power cabling
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
4.4
Cable dimensioning and selection
Table 13 shows the minimum dimensions of the Cu cables and the corresponding fuse sizes.
These instructions apply only to cases with one motor and one cable connection from the AC drive
to the motor. In any other case, ask the factory for more information.
4.4.1
Cable and fuse sizes, enclosures MU2 and MU3
The recommended fuse types are gG/gL (IEC 60269-1). The fuse voltage rating should be selected
according to the supply network. The final selection should be made according to local regulations,
cable installation conditions and cable specifications. Bigger fuses than those recommended below
must not be used.
Check that the fuse operating time is less than 0.4 seconds. Operating time depends on used fuse
type and impedance of the supply circuit. Consult the factory about faster fuses. VACON
®
also rec-
ommends for high speed gS (IEC 60269-4) fuse ranges.
The cable dimensioning is based on the criteria of the International Standard
IEC60364-5-52
: Cables must be
PVC-isolated; use only cables with concentric copper shield; Max number of parallel cables is 9.
When using cables in parallel,
NOTE HOWEVER
that the requirements of both the cross-sectional area and
the max number of cables must be observed.
For important information on the requirements of the grounding conductor, see chapter Grounding and earth
fault protection of the standard.
For the correction factors for each temperature, see International Standard
IEC60364-5-52
.
Table 13. Cable and fuse sizes for
VACON
®
20 X.
Enclosure
size
Type
I
INPUT
[A]
Fuse
(gG/gL)
[A]
Mains and
motor cable
Cu [mm
2
]
Terminal cable size
Main
terminal
[mm
2
]
Earth
terminal
MU2
0004 2
0003 4 - 0004 4
4.3
3.2 - 4.0
6
3*1.5+1.5
0.2 — 2.5
M4 ring
terminal
0005 2 - 0007 2
0005 4 - 0006 4
6.8 - 8.4
5.6 - 7.3
10
3*1.5+1.5
0.2 — 2.5
M4 ring
terminal
0008 4
9.6
16
3*2.5+2.5
0.2 — 2.5
M4 ring
terminal
MU2
1-phase
0004 2
8.3
20
(Mains) 2*1.5+1.5
(Motor) 3*1.5+1.5
0.2 — 2.5
stranded
M4 ring
terminal
0005 2
11.2
20
(Mains) 2*2.5+2.5
(Motor) 3*2.5+2.5
0.2 — 2.5
stranded
M4 ring
terminal
0007 2
14.1
25
(Mains) 2*2.5+2.5
(Motor) 3*2.5+2.5
0.2 — 2.5
stranded
M4 ring
terminal
MU3
0011 2
0009 4
13.4
11.5
16
3*2.5+2.5
0.5 — 16.0
M5 ring
terminal
0012 2
0012 4
14.2
14.9
20
3*2.5+2.5
0.5 — 16.0
M5 ring
terminal
0017 2
0016 4
20.6
20.0
25
3*6+6
0.5 — 16.0
M5 ring
terminal
