Grundfos TPE 1000 Series Installation And Operating Instructions Manual page 11

Related information
26.1 Supply voltage
27.1 Supply voltage
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.
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.
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 the section on supply
voltage.
1
N
L
PE
Example of a mains-connected motor with mains
switch, backup fuse and additional protection
Pos. Description
1 RCD, type B
Mains connection, single-phase motors
Related information
26.1 Supply voltage
N
L
PE
L
N
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, ensure that the
terminal block for L1, L2 and L3 is pressed home in
its socket when the supply cable has been
connected.
For maximum backup fuse, see section 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.
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.
Corner earthing is not allowed for supply
voltages above 3 x 240 V and 3 x 480 V,
50/60 Hz.
1
L1
L2
L3
PE
Example of a mains-connected motor with mains
switch, backup fuses and additional protection
Pos. Description
1 RCD, type B
L1
L2
L3
11