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Electrical installation
4.6 Power connections
1. Open the cabinet, remove any covers in front of the terminals for the motor cables
(connections U2/T1, V2/T2, W2/T3; X2) and power cables (connections U1/L1, V1/L2,
W1/L3; X1).
Remove or move the base plate under the terminals for inserting the power or motor
cables.
Feed the power cable from the top or bottom into the enclosure and take it up as far as
the circuit breaker terminals as indicated by the dashed line in the diagram (4).
Connect the ground (PE) conductor to the ground terminal provided in the enclosure,
marked with the ground symbol (50 Nm for M12).
2. Secure the power cable to the strain relief on the C-rails located inside the enclosure on
the sides.
3. Lay the cable according to the permissible bending radius, and route it, if required, also
through the top hat.
4. Connect the power cable with the prescribed torque to the circuit breaker (connections
U1/L1, V1/L2, W1/L3; X1).
Then screw the motor cables onto the terminals.
Make sure that the conductors have been connected properly (U2/T1, V2/T2, W2/T3).
Note
Pay attention to the torque
The tightening torques for the supply system connections to the main switch -Q1 are
specified in the respective technical data of the cabinet unit.
Cabinet units 380 ... 480 V: 700 HP (450 kW) ... 1000 HP (800 kW), 500 ... 690 V:
700 HP (710 kW) ... 1250 HP (1200 kW)
1. Open the cabinet, remove the covers (if necessary) in front of the motor cable (terminals
U2/T1, V2/T2, W2/T3; X2) and power cable (terminals U1/L1, V1/L2, W1/L3; X1)
terminals.
2. Move or remove the bottom plate below the terminals through which the motor cables are
fed.
3. Connect the ground (PE) conductor to the ground terminal provided in the enclosure,
marked with the ground symbol (50 Nm at M12).
4. Connect the line and motor cables to the corresponding terminals.
Make sure that you connect the conductors in the correct sequence: U2/T1, V2/T2,
W2/T3 and U1/L1, V1/L2, W1/L3!
72
Operating Instructions, 12/2018, A5E36652151A
Enclosed Drives
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