Analysis of the reasons for centrifugal pump tripping
Thread Content
There is a situation in which, when the outlet valve of the centrifugal pump remains at a low opening degree, the pump current reaches the set value. Once the valve opening increases, the pump shuts down. Please take a look at the reasons behind this situation and the solutions.
Check the opening degree of the return valve. . . . . . . . .
Is there a problem with the pump selection? It’s possible that the selected pump is a bit too small
Maybe the motor has low power?
Turn the machine to check whether the rotating components move smoothly; excessive friction during rotation can cause the motor to overload.
A multi-stage pump? If checking the balance disc clearance, a larger clearance corresponds to a higher load
I don’t know what the original poster is talking about. How much should the outlet valve be opened? Also, what is the flow rate when the outlet valve is opened a little? Can the designed flow rate of the pump be achieved?
Is it because the diameter of the outlet pipe is too large, such that even a slight opening of the valve already results in the flow rate specified in the design; opening it any further would cause an excess flow rate and excessive current. The advanced ones will trip.
Mainly, the export traffic cannot be measured. Because there is no flow meter.