Grundfos SP 3A User Manual

English (GB)
11
6.6 Connection of three-phase motors
Three-phase motors must be protected. See section
6.1.2 Three-phase motors.
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. 14.
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. 15.
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. 16.
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)
TM03 2099 3705
Connection Grundfos 6" motors
PE Yellow and green
U1 Brown
V1 Black
W1 Grey
W2 Brown
U2 Black
V2 Grey
L1
PE WVU
PE
M
L3L2
3
TM03 2100 3705TM03 2101 3705TM07 6468 1920
L2L1
M
L3PE
W2 U2 V2
PE U1 W1V1
3
L2L1
M
L3PE
W2 U2 V2
PE U1 W1V1
3
PE L1
PE
L2 L3
M
U1 V1 W1
W2V2U2
3
~

Grundfos SP 3A Specifications

General

Brand	Grundfos
Model	SP 3A
Category	Water Pump
Language	English