Earth Connection; Three Phase Connection; Single Phase Connection - HYDROO VDROO Serie Manual De Instrucciones De Instalación Y Operación

6.5. Earth connection

DANGER:
· Always connect the external protection wire to the ground (earth
connection) before making any other electric connections.
· The whole electric equipment must be connected to earth. This applies
to the pump, the motor and any other protection equipment. Run a test
to verify that the earth connection is correctly connected.
· If the motor's power cable gets disconnected accidentally, the earth lead
should be the last one to get disconnected from its connection.
Make sure that the earth lead is longer that the phase leads. This is also
applicable to the two ends of motor's power leads.

6.6. Three phase connection

Power supply [V]
Delta connection
220 - 240
50 Hz
380 - 415
220 - 277
60 Hz
380 - 480
3) 60 Hz, 0,37 - 1,1 kW motors: 220 - 277 / 380 - 440 V
82
Star connection
380 - 415
660 - 690
390 – 480 3)
660 - 690
Figure 15:
Diagram for delta
connection

6.7. Single phase connection

The electric connections of single phase motors, like those for three phase motors, are
done on the motor terminals located at the motor's connection box. The size of the
connections box for single phase motors is noticeable bigger than that for three phase
motors, since it contains a capacitor.
Power supply [V]
Low voltage
50 Hz 220 - 230
Figure 16:
Diagram for star connection
High voltage
240
Figure 17:
Connection for
clockwise turn
Figure 18:
Connection for anti-
clockwise rotation
83