TAM 00621
13
DSD 45-100
05/2007
Three-phase synchronous motor
English
•
Connectors and terminal box connections must not be exposed to mechanical stress. If
necessary, provide strain, shearing, twist and anti-kink relief.
If the power is being connected via a terminal box, you must ensure that
•
When the insulation is stripped off the ends of the wires, the insulation remains close to the
cable shoe or terminal. Protruding wire ends must be avoided at all costs.
•
The cable shoes used match the dimensions and cross-sections of the terminals and wires.
•
The screwed connections for the electrical connections are tightened to the stipulated torque
(see
Appendix
)
•
The type of protection is retained.
Note:
Any cable entries that are not required must be sealed with sealing elements. The
sealing elements must be fully functional and undamaged when the terminal box is closed.
4 Commissioning,
operation
4.1
Safety instructions
Working on the electric motor:
Work must not be carried out on the electric motor until the motor has come to a
standstill, is electrically isolated and has cooled off. Any connections, such as screw
connections, that are loosened while working on the motor must be tightened again
prior to commissioning.
When carrying out work on the motor, please observe the technical instructions and
notes in the relevant chapters of these Commissioning and Maintenance Instructions.
Attention:
If the optional holding brake is fitted, it must not be used to secure anything
while working on the motor (e.g. for retaining loads)!
Risk of fatality due to electrical shock:
Make sure that the motor is electrically isolated and de-energized.
Never disconnect the motor connections during operation.
Only connect measuring instruments when the motor is isolated from the supply and
completely de-energized.
Only commence work on the motor connections when you are sure the motor is
electrically isolated and there is no voltage flowing.
During operation, there is a potential difference across the motor terminals/contacts
and the motor windings. Never touch these modules/elements while the motor is in
operation.
Dismantling safety devices:
The electric motor must not be operated until the safety devices have been mounted.
On dismantling safety devices during commissioning, ensure the motor is taken out of
operation.
Remount the safety devices immediately after commissioning is completed.
