Additional measures for CSA conformity
Frame sizes FSA ... FSC
● Install the inverter on a surge protection device with the following features:
– Rated voltage 3-phase 480 V AC
– Overvoltage category III
– Overvoltage VPR
≤2500 V
– Applications, type 1 or type 2
Frame sizes FSD … FSF
● Operate the inverter under the following ambient conditions:
– Pollution degree 2
– Overvoltages category III
4.8.5
Maximum permissible motor cable length
Table 4-7
Maximum permissible motor cable lengths for FSAA … FSC
1)
Inverter
frame size
EMC category: Sec‐
ond environment,
C2 or C3
No EMC category
Inverter with filter
Inverter with filter
and without output
reactor
Inverter without filter
and without output
reactor
Inverter without fil‐
ter, with an output re‐
actor
with shielded motor
cable
Shielded Unshiel‐
ded
Shielded Unshiel‐
ded
Shielded Unshiel‐
ded
FSAA
25 m
2)
50 m
100 m
150 m
3)
150 m
150 m
4)
225 m
4)
FSA …
FSC
25 m
2)
50 m
100 m
150 m
150 m
150 m
4)
225 m
4)
1)
The values are valid for a pulse frequency set at the factory
2)
When using a low-capacitance motor connection cable FSAA … FSB: 50 m, FSC: 100 m
3)
Exception for 2.2 kW: 125 m with standard motor cable, 150 m when using a motor cable with low
capacitance
4)
For a line voltage 440 V … 415 V: shielded 100 m, unshielded 150 m
Installing
4.8 Connect the line supply, motor and braking resistor
SINAMICS G120C converter
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34263257B AF
77
