Hi Guys
Yeah it sounds like the Aquifer cant supply the fluid required to maintain the pressure, so it’s not really an electrical problem. If you are testing drawdown, and inflow that is the best route. The system may have to be rethought around what your aquifer can supply, and indeed will...
Overloads are to protect the motor, General advice to take full load current of the motor, alarm at +10% and trip (shutdown) at +20%. Adjust these figures according to source as you would shutdown the whole system.
You may have resolved this, if so feel free to ignore me. But I would table the question what is the fluid source? Are the pumps in an oilwell, riser or flowline? Before I throw in my tuppenceworth.
