Cable And Fuses - KEB COMBIVERT F5 MULTI Applications Manual

Project Planning

10.1.3 Cable and Fuses

Chapter Section Page
10 1 6
By means of this section you can check whether you can still optimize your machine
with regard to the material usage. The specifications are derived from the DIN VDE
0298 Part 4. The values apply approximately and only for the intended operation. In
border cases always proceed in accordance with the above standard. The following
table shows the current-carrying capacity of 3- and/or 5-wire PVC cables (i.e. 2 and/or
3 loaded wires) in dependence on the ambient temperature. The current is to be laid
out to the input current of the frequency inverter.
Cross section of feed cable
Standard Alternatively 30°C 40°C 45°C 50°C
0,5 mm²
0,75 mm²
1 mm²
1,5 mm²
2,5 mm²
4 mm² 2 x 1,5 mm² 34
6 mm² 2 x 2,5 mm² 44
10 mm²
16 mm²
25 mm² 2 x 10 mm² 108
35 mm² 2 x 16 mm² 135
50 mm² 2 x 16 mm² 168
70 mm² 2 x 25 mm² 207
95 mm² 2 x 35 mm² 250
120 mm² 2 x 50 mm² 292
150 mm² 2 x 50 mm² 330
185 mm² 2 x 70 mm² 394
240 mm² 2 x 95 mm² 450
300 mm² 2 x 95 mm² 507
400 mm² 2 x 150 mm² 661
500 mm² 2 x 185 mm² 774
The use of special cables or the way of laying the cables allows even higher currents
(see DIN VDE 0298 Part 4). The motor cable must correspond to the cross-section of
the mains cable.
If in the case of long lines (>30m) still maximum torque is required at the motor shaft,
the cable should be dimensioned for the next larger cross-section in order to reduce
line resistances.
Mains fuses are to be designed for the rated input current of the inverter. The current/
time-characteristic of the fuse must be slow-acting in order to avoid premature tripping
when utilizing the power reserves of the inverter.
Date Name: Basis
04.05.04
KEB COMBIVERT F5
Current in [A] at
- 7 6
- 12 10 10
- 15 13 13
- 18 16 15
- 26 23 22
30 29
38 37
2 x 4 mm² 61 53 51
2 x 6 mm² 82 71 69
94 91
117 113
146 141
180 174
218 210
254 245
287 277
343 331
392 378
441 426
575 555
673 650
6 5
9
11
13
18
24
31
43
58
77
96
119
147
178
207
234
280
320
360
469
550
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