Electrical Connection - Grundfos SRG Serie Mode D'emploi

20. Mount the cable sock (18) to the top fixation bracket using the
shackle, and pull the motor cable through it to the desired
position. See fig. 9. The power supply cable should be slightly
tightened.
B
31
18
Fig. 9 Top fixation bracket with lifting and safety wires and
cable sock
Remove the lifting wire from the crane before starting
the pump.
21. Remove the lifting wire from the winch and fit it to the wire
clamping (20) on the top fixation bracket.
Use the lifting wire as a relief for the power supply cable. For this
reason, the lifting wire must always be tightened.
DANGER
Electric shock
Death or serious personal injury
- Make sure the power supply to the control cabinet
has been switched off.
22. Connect the power supply cable to the terminals in the control
cabinet.
10

5.4 Electrical connection

The electrical connections must be carried out by a qualified
electrician in accordance with local regulations.
All national and local regulations relating to safety and accident
prevention must be observed.
20
The supply voltage and frequency are marked on the pump
nameplate. Make sure that the pump is suitable for the power
supply available at the installation site.
The pump is supplied complete with a power supply cable of 33 ft
(10 m) which is standard length suitable for up to 22 ft (7 m) deep
tanks. Standard cable lengths are 33 and 49 ft (10 and 15 m),
longer cables are available on request. See section
7.2 Identification.
The motor is marked either with a Y (star) or Δ (delta). Make this
connection in an external control panel using conductors 1 to 6 of
the power supply cable.
Figure
connections. See also section
5.4.1 Starting method
Start the recirculation pump via a soft starter or frequency
converter.
DANGER
Electric shock
Death or serious personal injury
- Before making any electrical connections, make
sure that the fuses have been removed or the
mains switch has been switched to off. Make sure
that the power supply cannot be accidentally
switched on.
10 shows a schematic drawing of these star and delta
5.4.2 Wiring diagrams.