Electrical Connection - Grundfos DPK.10.50.075 Installation And Operating Instructions Manual

11. Electrical connection

The electrical connection must be carried out in
accordance with local regulations.
Warning
The pump must be connected to a
mains switch with a minimum contact
gap of 3 mm in all poles.
The classification of the installation
site must be approved by the local fire-
fighting authorities in each individual
case.
Grundfos control boxes, pump
controllers must not be installed in
potentially explosive environments.
Make sure that all protective equipment
has been connected correctly.
Fig. 6 Wiring diagram, DOL starting
Fig. 7 Wiring diagram, star-delta starting
The supply voltage and frequency are marked on the
pump nameplate. The voltage tolerance must be
within - 5 %/+ 5 % of the rated voltage. Make sure
that the motor is suitable for the power supply
available at the installation site.
All pumps are supplied with 10 m cable and a free
cable end.
Pumps with sensors must be connected to a GU01
or GU02 pump controller. See fig. 6 for DOL-
connected pumps or fig. 7 for star-delta-connected
pumps. For further information, see the installation
and operating instructions for the selected control
box or pump controller at www.grundfos.com.
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