MM-13- rev 01-EN
20
Assembling of the vibration transducers (SPM) ( if provided)
Vibration transducers are normally supplied disassembled in order to avoid having them damaged
during transport.
To install transducers it is necessary to refer to the instructions supplied by the transducer
manufacturer.
Electric connections
CAUTION
It is important to verify that the supply voltage and the frequency correspond to the values
indicated on the rating plate fixed on the machine.
Before starting the installation work, it is important to check that the incoming cables are
separated from the supply mains, and that the cables are connected to the protective earth.
Check all rating plate data, especially the voltage and winding connection.
Any work on the electric installation must be carried out only by skilled personnel.
The following safety rules must be applied:
De-energize all equipment, including auxiliary equipment
Provide safety protections to avoid re-energizing of the equipment
Verify that all components are isolated from their respective supply
Connect all parts to protective earth and to short circuits
Cover or provide barriers against live parts in the surrounding area
Main terminal box
The winding terminals are places inside the main terminal box.
Generators in standard execution are made with 3 terminals only. In some types with star connection,
an accessible “star point” is provided.
Direction of rotation is clockwise seen from the drive end when the phase sequence L1, L2, L3 is
connected to the terminals U1 V1 V2.
To reverse the direction of rotation, exchange the connection of two of the terminals.
The dimension of the incoming cables must be suitable for the maximum load current and in
accordance with the applicable rules.
CabIe terminals must be of the appropriate type and have the right dimensions.
In order to assure a reliable operation, power cable connections must be properly tightened.
Supply cables must be suitably held in order not to cause stresses on the terminal boards.
The inside of the main terminal box must be free from dirt, humidity and foreign residues. The box
itself, the cable glands, and unused cable entrance holes must be hermetically sealed against dust
and water.
Auxiliary terminal box (if provided)
Auxiliary terminal boxes are fixed to the frame of the generator according to the accessories and to
the customer’s requirements.
Their position is shown on the overall dimensions drawing.
Auxiliary terminal boxes are provided with terminal blocks and cable glands, as shown in the drawing
hereunder. The maximum dimensions permitted for the conductors are normally
limited to 2.5 mm² for signal conductors and to 4 mm² for auxiliary power circuits and the voltage is
limited to 750 V.
