Digitax HD M75X Series Installation and Technical Guide
107
Issue Number: 5
Maximum continuous input current
The values of maximum continuous input current are given to aid the selection of cables and fuses. These values are stated for the worst case
condition with the unusual combination of stiff supply with bad balance.
The value stated for the maximum continuous input current would only be seen in one of the input phases. The current in the other two phases would
be significantly lower. The values of maximum input current are stated for a supply with a 2 % negative phase-sequence imbalance and rated at the
maximum supply fault current given in Table 6-18.
Table 6-18 Supply fault current used to calculate maximum input currents
Table 6-19 AC input fuse ratings and cable sizes
*
These are fast acting fuses.
Ensure cables used suit local wiring regulations.
Inrush current
The drive will have an inrush current during power-up, the peak inrush is limited to the value shown below:
200 V
Frame 1 7.5 A peak
Frame 2 7.5 A peak
Frame 3 14.9 A peak
400 V
Frame 1 8.1 A peak
Frame 2 8.1 A peak
Frame 3 16.2 A peak
Model
Symmetrical fault level (kA)
All
100 kA
Fuses
The AC supply to the drive must be installed with suitable protection against overload and short-circuits.Table 6-19 shows the
recommended fuse ratings. Failure to observe this requirement will cause risk of fire.
Model
No of input
phases
Typical input
current
(for single axis)
Fuse ratings
(for single axis)
Cable size
(for single axis)
Input
Output
A
IEC gG
UL Class
CC, J or T*
mm²
AWG
mm²
AWG
01200022
1
3.7
8
15
0.75
14
0.75
24
01200040
1
6.9
12
15
1.5
14
0.75
22
01200065
1
11.4
16
15
2.5
12
0.75
20
02200090
1
17.7
25
25
4.0
10
0.75
16
02200120
1
23
32
30
6.0
10
0.75
16
03200160
1
31.5
32
40
6.0
8
1.5
14
01200022
3
5.8
8
15
0.75
14
0.75
20
01200040
3
7.9
12
15
1.5
14
0.75
18
01200065
3
10.5
16
15
2.5
14
0.75
16
02200090
3
16.7
25
25
4.0
10
1.0
14
02200120
3
20.3
32
30
6.0
10
1.5
12
03200160
3
27.9
32
40
6.0
8
2.5
12
01400015
3
3.1
6
15
0.75
14
0.75
20
01400030
3
4.8
8
15
0.75
14
0.75
20
01400042
3
5.3
8
15
0.75
14
0.75
18
02400060
3
10.1
16
25
2.5
14
0.75
16
02400080
3
12.1
16
25
2.5
12
0.75
14
02400105
3
14.9
20
25
4.0
12
1.5
14
03400135
3
20.8
32
30
6.0
10
2.5
12
03400160
3
22.0
32
30
6.0
10
2.5
12
The nominal cable sizes below are only a guide. The mounting and grouping of cables affects their current-carrying capacity, in some cases
smaller cables may be acceptable but in other cases a larger cable is required to avoid excessive temperature or voltage drop. Refer to
local wiring regulations for the correct size of cables.
WARNING
NOTE
CAUTION
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