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Electrical installation
4.2 Terminal description
SINAMICS V20 Inverter
24
Operating Instructions, 07/2012, A5E03728167
Recommended cable cross-sections and screw tightening torques
Screw tightening torque (tolerance: ± 10%)
Frame size
Rated output
power
Cable cross-section
Mains and PE terminals
Motor / DC / braking resistor /
output earth terminals
400 V
0.37 ... 0.75 kW 1.0 mm
2
A
1.1 ... 2.2 kW
1.5 mm
2
1.0 Nm
B
3.0 ... 4.0 kW
2.5 mm
2
1.0 Nm
1.5 Nm
C
5.5 kW
4.0 mm
2
7.5 kW
6.0 mm
2
D
11 ... 15 kW
10 mm
2
2.4 Nm
Maximum motor cable lengths
Frame size
Maximum cable length
Unshielded cable
Shielded cable
A, unfiltered
50 m
25 m
A, filtered
50 m
10 m
B
50 m
25 m
C
50 m
25 m
D
50 m
25 m
Star-delta connection of the motor
Select delta connection if either a 230 / 400 V motor on a 400 V inverter or a 120 / 230 V
motor on a 230 V inverter is supposed to operate at 87 Hz instead of 50 Hz.
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