What are the reasons for excessive current in the motor and heating of the bearing after the pump starts?
Thread Content
Wear-resistant and corrosion-resistant centrifugal pump, flow rate 15 m3/h, head 70 m, 15 kW–2. The pump outlet has two bypass routes: one leads to the belt filter, and the other leads to the plate and frame filter. When the pump is operating toward the belt filter, everything functions normally; however, when it is switched to the plate and frame filter, an excess current is detected, and the bearings overheat. What’s the reason? Process Management Group
:(The resistances of your two wires are different; check whether the wire that’s hot has lower resistance, observe any changes in pump pressure, and try adjusting the motor frequency.)
Most likely, the plate and frame pressure drop is too high, so you selected a pump head that is too low
After the switch, did the outlet pressure decrease? If that is the case, when the pump operates at high flow rates, the shaft power increases
The resistance on the plate and frame side is lower than the rated head of the pump, resulting in an increase in the flow rate of the centrifugal pump