This paper analyzes the reason of the water pump tripping

After its commissioning, the water pump work after a period of time a closing namely tripping problem happens. After ruled out the switch mechanism failure, according to the conventional method to check the cable, secondary loop connection, and the relay and the fixed value is normal, to start again and often successful. After the suspect is soft fault caused by the DCS system, but change on the control panel operation, still can appear the phenomenon. Usually the cause of the water pump tripping mainly include:

(1), use the head below the pump lift pump too much lead to traffic after the current rise and over current, controls the outlet valve opening solution to traffic control small and reduce the current to allow current range, or change small reduce pump impeller diameter.

(2) be affected with damp be affected with damp, water pump motor lead to too much electricity.

(3), water pump motor quality problem.

(4), water pump voltage instability.

(5), water pump control cabinet system problems