The name itself speaks about the functions of this motor, that is, to be fully functional while in water. The purpose of this electrical motor is to allow working underwater or other liquids where most others fail. It is sealed and typically use for pumps. Whether sump pumps, indoor well or large water wells, you are sure to find a submersible motor to power the pumping mechanism used in the system. Here is how it works.
LetâEUR(TM)s take the example of a water well that needs waterproof pumps. Before sending the pump into the water, this motor is attached to it. Often it may be lowered with the help of a cable or simply the electrical cord. Either way, the pump and the submersible motors stay at the bottom, lightly suspended. A hose fitted to the nipple on the pump sends the water up and out of the well when the submersible motor turns on.
The pumps found in the basement of the wells, are similar to that of toilet vales. Connected with the motor, the pump is placed in the small pit. As water fills the pit, a plastic float very similar to the toilet tank float rises, with the deepening water and trips a switch on the pump. This results into the pump sending water through the plumbing attached using a hose. Depending on the application there may be several motors and pumps located throughout the basement.
Just like the explosion proof motors the design of these are very critical. The reason being that they are in water connected with the electric pump. The pumps push the liquid rather than pulling it, as the former is easier and has fewer loads on the system. This is why the motor is needed to be placed at the source of the liquid. Thus, there is no requirement for a huge motor and subsequently a bigger casing; Similar results may be achieved with a smaller one. Also, it aids in reducing power consumption as well as ensures a cool running pump motor and move great quantity of liquid in a short time.
However, due to the submersion in water, it is critical that all electrical connections be made water-tight to prevent damage to the motor as well as to anyone working on the unit. This is why this motor is placed in a rubber sock which maintains the pump's dryness. When servicing or repair is needed, the pump and the motor are removed from the sock, ensuring that the pump and motor work efficiently for years. Source: GOARTICLES
