4
vacon • 41
Power cabling
4.4.2
Cable and fuse sizes, frames MS2 to MS3, North America
The recommended fuse types are gG/gL (IEC 60269-1) or class T (UL & CSA). 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 shall 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 recommends high speed J (UL & CSA), aR (UL recognized, IEC 60269-4) and gS (IEC
60269-4) fuse ranges.
Table 18. Cable and fuse sizes for
VACON
®
20 CP, North America.
The cable dimensioning is based on the criteria of the
Underwriters’ Laboratories UL508C
:Cables must
be PVC-isolated; Max ambient tempe30 °C, max temperature of cable s70 °C; 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 earthing conductor, see standard Underwriters’
Laboratories UL508C.
For the correction factors for each temperature, see the instructions of standard
Underwriters’ Labo-
ratories UL508C
.
Frame
Type
I
INPUT
[A]
Fuse
(class T)
[A]
Mains and
motor cable
Cu
Terminal cable size
Main terminal
Earth
terminal
MS2
0004 2
0003 4 - 0004 4
4.3
3.2 - 4.0
6
AWG14
AWG24-AWG12 AWG17-AWG10
0005 2 - 0007 2
0005 4 - 0006 4
6.8 - 8.4
5.6 - 7.3
10
AWG14
AWG24-AWG12 AWG17-AWG10
0008 4
9.6
10
AWG14
AWG24-AWG12 AWG17-AWG10
MS2
1-phase
0004 2
8.3
20
AWG14
AWG24-AWG12 AWG17-AWG10
0005 2
11.2
20
AWG14
AWG24-AWG12 AWG17-AWG10
0007 2
14.1
25
AWG14
AWG24-AWG12 AWG17-AWG10
MS3
0011 2
0009 4
13.4
11.5
15
AWG14
AWG20-AWG6
AWG17-AWG10
0012 2
0012 4
14.2
14.9
20
AWG12
AWG20-AWG6
AWG17-AWG10
0017 2
0016 4
20.6
20.0
25
AWG10
AWG20-AWG6
AWG17-AWG10
Содержание 20 CP
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