Sir, we have installed 4 inch,10 hp submersible pump 700 ft.but ist failed often motor winding grounded.*** give asolution.

You need to give us much more information.

Is the motor failing to start?

Model of motor, SF, Temp, Nameplate Amperage, Single or 3 Phase motor. What are the sizes of the OCPDs in the circuit.

What is is the motor trying to lift, seawater, fresh water or liquid chemical?

Don, spell out OCPD, Overcurrent Protection Device, or use words such as circuit breaker or fuse, for people that do not know electrical trade jargon.