Siemens SINAMICS G150 - Minimum Cable Lengths for Motor Connection to a Motor with One-Winding System

Electrical installation
4.7 Power connections
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A
85
4.7.4
Minimum cable lengths for motor connection to a motor with one-winding
system
Minimum cable lengths for motor connection to a motor with one-winding system for units connected
in parallel
For units connected in parallel for connection to a motor with one-winding system, the
following minimum cable lengths must be adhered to, if a motor reactor (option L08) is not
being used. It must also be ensured that the cables are of the same length.
Table 4- 4 Minimum cable lengths
Article number
Unit rating [kW]
Minimum cable length [m]
3 AC 660 ... 690 V
6SL3710-2GH42-8EA3 1750 12
6SL3710-2GH42-0EA3
1950
10
6SL3710-2GH42-2EA3
2150
8
6SL3710-2GH42-4EA3
2400
8
6SL3710-2GH42-7EA3
2700
10
4.7.5
Connecting the motor and power cables
Connecting the motor and power cables on the cabinet unit
Note
Position of the connections
For the location of t
he connections, see the layout diagrams.
1. Open the cabinet, remove the covers (if necessary) in front of the connection panel for
motor cables (terminals U2/T1, V2/T2, W2/T3; X2) and power cables (terminals U1/L1,
V1/L2, W1/L3; X1).
2. Move or remove the bottom plate below the connection panel through which the motor
cables are fed.
3. Screw the protective earth (PE) into the appropriate terminal (with earth symbol) (50 Nm
for M12) at the points provided in the cabinet.
4. Connect the motor cables to the connections.
Make sure that you connect the conductors in the correct sequence: U2/T1, V2/T2,
W2/T3 and U1/L1, V1/L2, W1/L3!