Motor Cable Length And Cross Section - Siemens SINAMICS G120 Hardware Installation Manual

4.4

Motor cable length and cross section

Permissible Cable Length
The use of unshielded motor cables is possible. However to meet C2 EMI class, shielded
cables with appropriate EMI installation are required.
Table 4- 2
• Screened
• Unscreened
Table 4- 3
Frame size
FSA
FSB ... FSC
FSD ... FSF
FSGX
The control cables must be laid separately from the power cables. The connection must be
carried out as shown in the installation section in this manual, to prevent inductive and
capacitive interference from affecting the correct function of the system.
Note
Ensure that the appropriate circuit-breakers or fuses with the specified current rating are
connected between the power supply and the inverter. The technical specifications contain
information about the circuit breaker and fuses. See Technical specifications (Page 65).
Power Module PM240
Hardware Installation Manual, 07/2009, A5E00807525B AD
The inverters will operate at full specification with cable lengths as follows
25 m (80 ft) for filtered drives
50 m (160 ft) for unfiltered drives
100 m (330 ft) for both filtered and unfiltered drives
Using an output reactor or a sine-wave filter as specified in the catalog, the following
cable lengths are possible
HO power
rating
0.37 kW ...
1.5 kW
2.2 kW ...
11 kW
15 kW ...
110 kW
132 kW ...
200 kW
CAUTION
Max. permissable motor cable length using ...
... an output reactor with ...
... screened ... unscreened
cables cables
100 m 100 m
110 yd. 110 yd.
100 m 150 m
110 yd. 160 yd.
200 m 300 m
220 yd. 330 yd.
300 m 450 m
330 yd. 490 yd.
4.4 Motor cable length and cross section
... a sine-wave filter with ...
... screened
cables
200 m
220 yd.
200 m
220 yd.
200 m
220 yd.
300 m
330 yd.
Connecting
... unscreened
cables
300 m
330 yd.
300 m
330 yd.
300 m
330 yd.
450 m
490 yd.
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