Water Filled Submersible Motor

Why choose us

Features of Water Filled Submersible Motor

Highly corrosion resistant due to the stainless steel or other materials used in construction.
Usually, have an all-in-one design with a sealed motor and pump for waterproofing and efficient cooling.
Compact size with flexibility in installation options, often able to fit into small spaces and inside tanks or sump pits without taking up too much space.
Efficient power consumption, running quietly even at higher capacities than regular models of pumps do and requiring minimal maintenance needs over time.
Able to handle large volumes of water by producing high flow rates underwater for pressure-boosting applications such as swimming pools, waterfalls, aquariums etc.

Water Filled Submersible Motor: Commissioning and Operation

After energising the motor for the first time, ensure that the starting current drops to below the nameplate current within 4 seconds, which means that the motor has run up to full speed. (If motor is being started with a Soft Starter or Auto-transformer the run-up must still be less than 4 seconds).

Check the flow and pressure from the pump to make sure the motor is running in the correct direction of rotation. Swapping any 2 of the 3 phase supply leads can change the direction of rotation.

While the motor is running for the first time check the water for sand. If sand appears continue to pump until the water clears. If the motor is switched off while the pump is still pumping sand this could accumulate in the pump and cause it to seize up.

During testing or checking rotation the number of starts and the time between starts needs to be controlled. As a general rule the motor should be allowed 15 minutes to cool down between each start.

All SME motors are fitted with one or more PT100s so the internal temperature can be monitored and this needs to be kept below 70 deg.C. on Standard Wet wound motors. The standard insulation wire can operate up to 80 deg.C., and the temperature inside the motor can vary between different parts of the motor. In general the hottest part of these motors is in the stator end winding.

It is strongly recommended that the "Over Current" protection is set to trip at about 5% higher than the steady state current recorded when the motor/pump is commissioned. It is not recommended that the "Over Current" protection is set at just above Full Load Nameplate Current, as, in a lot of cases, this will not protect the motor if the current increases, especially if the motor is not fully loaded. We believe that the operator needs to know if the current starts to increase, so they can determine why.

During the life of the Installation all Temperature, Voltages, Current and Insulation Level readings should be recorded, monitored and reviewed as a form of preventative maintenance.