3.
Check that the connections are tight.
→ The flushing system has been connected.
Notice!
Leakage of liquids.
► If a leak is detected, switch off the pump and replace the shaft seal
immediately.
6.3.6
Electrical connection
6.3.6.1 Star connection
Star connection for high voltage.
Connect the pump according to the ordering information. The following figure
shows the wiring diagram of the star connection.
U1
V1
W1
W2
U2
V2
L1
L2
L3
Fig.10:
Star connection
6.3.6.2 Delta connection
Delta connection for low voltage.
Connect the pump according to the ordering information. The following figure
shows the wiring diagram of the delta connection.
U1
V1
W1
W2
U2
V2
L1
L2
L3
Fig.11:
Delta connection
6.3.6.3 Frequency converter operation
All three-phase motors can be connected to a frequency converter. Frequency
converter operation may subject the insulation of the motor to a higher load so
that louder motor noise than in the normal case may occur due to eddy currents
caused by voltage spikes.
Large motors driven by a frequency converter are loaded by bearing currents. For
pump motors that are used with an external frequency converter, HILGE
recommends the use of insulated motor bearings for sizes of 37 kW and above to
avoid increased wear of the motor bearings by possible bearing currents.
Assembly and installation
Setup, installation, and connection
BA.H2A.KYY.001.GB_2
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27.02.2018
