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5 Installation at Site
Connecting the motor
1. Check the electrical voltage of the available power supply network against the
data on the motor name plate.
2. Connect the earth conductor (PE).
3. Knock out any knock-out openings in the terminal box. While doing this, avoid
causing damage to the terminal board, cable connections, etc. inside the
terminal box.
4. Connect the motor in star configuration or delta configuration in accordance
with the rated voltage (see name plate) and the available power supply
network. Alternatively, the 6-core connection of the three windings can be
connected to an external switchgear for automatic switchover.
Fig. 3: Star configuration
Fig. 4: Delta configuration
ð The terminal boards of motors with shaft centreline heights of 80 mm and
90 mm may differ from the schematic shown. In this case, star configuration
or delta configuration is selected by setting jumpers.
5. Optionally, the 2-core connection of the series-connected PTC thermistors for
temperature monitoring of the motor can be connected to terminals 1T1 and
1T2 with a suitable thermistor relay (PTC thermistor tripping unit). Observe the
maximum measuring voltage!
KSB IE4-Motor
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