English (GB)
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7.3 Mains supply
7.3.1 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 26.1 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
7.3.2 Three-phase supply voltage
Three-phase motors are available for the voltages
below:
• 3 x 380-500 V - 10 %/+ 10 %, 50/60 Hz, PE
• 3 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.
In order to avoid loose connections, make sure that
you have pressed home the terminal block for L1, L2
and L3 in its socket when you connect the supply
cable.
For maximum backup fuse, see section 27.1 Supply
voltage.
Only the following motors can be supplied through
an IT network:
• Motors with speed of 1450-2000/2200 rpm and
up to 1.5 kW
• Motors with speed of 2900-4000 rpm or
4000-5900 rpm and up to 2.2 kW.
Fig. 6 Example of a mains-connected motor
with mains switch, backup fuses and
additional protection
Fig. 7 Mains connection, three-phase motors
DANGER
Electric shock
- Death or serious personal injury
- Use the recommended fuse size. See
section 26.1 Supply voltage.
If you want to supply the motor through an
IT network, make sure that you have a
suitable motor variant. If you are in doubt,
contact Grundfos.
TM05 4034 1912TM05 3494 1512
If you want to supply the motor through an
IT network, make sure that you have a
suitable motor variant. If you are in doubt,
contact Grundfos.
Corner earthing is not allowed for supply
voltages above 3 x 240 V and 3 x 480 V,
50/60 Hz.
TM05 3942 1812TM05 3495 1512
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