English (GB)
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5.2 Mains supply
5.2.1 Single-phase supply voltage
• 1 x 200-240 V - 10 %/+ 10 %, 50/60 Hz, PE.
Check that the supply voltage and frequency correspond to the
values stated on the nameplate.
The wires in the motor terminal box must be as short as possible.
Excepted from this is the separated earth conductor which must
be so long that it is the last one to be disconnected in case the
cable is inadvertently pulled out of the cable entry.
For maximum backup fuse, see section 19.1 Supply voltage.
Fig. 4 Example of a mains-connected motor with mains
switch, backup fuse and additional protection
Fig. 5 Mains connection, single-phase motors
5.2.2 Three-phase supply voltage
• 3 x 380-500 V - 10 %/+ 10 %, 50/60 Hz, PE.
Check that the supply voltage and frequency correspond to the
values stated on the nameplate.
The wires in the motor terminal box must be as short as possible.
Excepted from this is the separated earth conductor which must
be so long that it is the last one to be disconnected in case the
cable is inadvertently pulled out of the cable entry.
For maximum backup fuse, see section 20.1 Supply voltage.
Fig. 6 Example of a mains-connected motor with mains
switch, backup fuses and additional protection
Fig. 7 Mains connection, three-phase motors
If the motor is supplied through an IT network,
use a dedicated IT network motor.
Contact Grundfos.
TM05 4034 1912TM05 3494 1512
In order to avoid loose connections, ensure that
the terminal block for L1, L2 and L3 is pressed
home in its socket when the supply cable has
been connected.
Corner grounding is not allowed for supply
voltages above 3 x 480 V, 50/60 Hz.
If the motor is supplied through an IT network,
use a dedicated IT network motor.
Contact Grundfos.
TM05 3942 1812TM05 3495 1512
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