Connecting-Up Information - Siemens Simodrive 1PH7 Planning Manual

Motor Description
1.7 Electrical connections
Fig. 1-3
1.7.2

Connecting-up information

Note
The overall system compatibility is only guaranteed when using shielded power
cables.
Shields must be incorporated in the protective grounding concept. Protective
ground should be connected to conductors that are open-circuit and that are not
being used and also electrical cables that can be touched. If the brake feeder
cables in the SIEMENS cable accessories are not used, then the brake conductor
cores and shields must be connected to the cabinet ground (open-circuit cables
result in capacitive charges!).
Warning
!
S Before carrying-out any work on the induction motor, please ensure that it is
powered-down and the system is locked-out so that the motor cannot re-start!
S Please observe the rating plate data and circuit diagram in the terminal box.
Appropriately dimension the connecting cables.
S Twisted or three-core cables with additional ground conductor should be used
as motor feeder cables. The insulation should be removed from the ends of the
conductors so that the remaining insulation extends up to the cable lug or termi-
nal.
S The connecting cables should be freely arranged in the terminal box so that the
protective conductor has an overlength and the cable conductor insulation can-
not be damaged. Connecting cables should be appropriately strain relieved.
S Please ensure that the following minimum air distances are maintained: Supply
voltages up to 500 V: Minimum air distance 4.5 mm
S After connecting-up, it should be checked, whether
– the inside of the terminal box is clean and free of any cable pieces,
– all of the terminal screws are screwed tightly,
– minimum air clearances are maintained,
1PH7/1-24
Motor
1/U
2/V
6/W
Power cable
SIMODRIVE
Conductor end sleeves acc. to DIN 46228
U
V
W
 Siemens AG, 2004. All rights reserved
Induction Motors, 1PH7 (APH7S) – 05.04 Edition