Electrical Connection - Grundfos SRG Serie Instrucciones De Instalación Y Funcionamiento

Power
supply
cable
Cable
clamp (17)
Fig. 8 Attaching the power supply cable to the
lifting wire
17. Position the crane in the foot and mount the
lifting wire in the drum of the winch.
Always leave at least three turns of wire on
Caution
the drum. Otherwise the wire may break
loose from the drum fixation.
Follow the separate installation and
Note
operating instructions for cranes.
18. Lift the complete pump (pump rack with motor)
using the crane and slide it over the column
profile.
19. Slowly lower the pump into the tank and down to
position on the connection flange.
20. Mount the cable sock (pos. 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
Caution
before starting the pump.
21. Remove the lifting wire from the winch and fit it to
the wire clamping (pos. 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.
10
Lifting wire (15)
Snap hook
Wire clamp
20
Warning
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.

4.4 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.
Warning
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.
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 10 m (standard length, suitable for up to 7 m
deep tanks). Standard cable lengths are 10 and 15
m, longer cables are available on request. See
section 6.2 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 10 shows a schematic drawing of these star
and delta connections. See also section
diagrams.
If the pump is connected in delta during operation,
the pump can be started in a star-delta connection.
Delta
W2 U2 V2
U1 V1 W1
L1 L2 L3
Fig. 10 Schematic drawing of delta and star
connection
4.4.2 Wiring
Star
W2 U2 V2
U1 V1 W1
L1 L2 L3