English (GB)
11
6.6 Connection of three-phase motors
Three-phase motors must be protected. See section
For electrical connection via the MP 204, see the separate
installation and operating instructions for this unit.
When a conventional motor-protective circuit breaker is being
used, the electrical connection must be carried out as described
below.
6.6.1 Motors wound for direct-on-line starting
The connection of Grundfos submersible motors wound for
direct-on-line starting appears from the table below and fig.
.
Check the direction of rotation as described in section
6.6 Connection of three-phase motors
Fig. 14
Grundfos motors - direct-on-line starting
6.6.2 Motors wound for star-delta starting
The connection of Grundfos submersible motors wound for
star-delta starting appears from the table below and fig.
Check the direction of rotation as described in section
6.6 Connection of three-phase motors
.
Fig. 15
Grundfos motors wound for star-delta starting
If direct-on-line starting is required, the motors must be
connected as shown in fig.
.
Fig. 16
Grundfos motors wound for star-delta starting -
direct-on-line starting
6.6.3 MS6000P Synchronous motors requiring double
cabling
Fig. 17
Grundfos MS6000P 37 kW and 45 kW
Mains
Cable/connection
Grundfos 4" and 6" motors
PE
PE (yellow and green)
L1
U (brown)
L2
V (black)
L3
W (grey)
TM
03
20
99
37
05
Connection
Grundfos 6" motors
PE
Yellow and green
U1
Brown
V1
Black
W1
Grey
W2
Brown
U2
Black
V2
Grey
L1
PE
W
V
U
PE
M
L3
L2
3
T
M
0
3
2
10
0 3
7
05
TM0
3
2
10
1 3
7
0
5
T
M
07
6
4
6
8
19
20
L2
L1
M
L3
PE
W2 U2 V2
PE U1
W1
V1
3
L2
L1
M
L3
PE
W2 U2 V2
PE U1
W1
V1
3
PE L1
PE
L2 L3
M
U1
V1
W1
W2
V2
U2
3
~