Product Description
Grundfos have been making submersible motors for more than 30 years and is one of the world’s largest manufacturers of high-quality submersible motors. The MS submersible motors are not only rated among the very best on the market for use with submersible pumps of any make, they are also designed to be the perfect fit for the SP pumps, matching their best duty points.
Features and benefits:
- A complete motor range
Grundfos offers a complete range of submersible motors in different voltages:
- High motor efficiency
Within the area of high motor efficiency, Grundfos is a market leader.
- Overtemperature protection
Protecting the motor against too high motor temperature is the simplest and cheapest way of avoiding that the motor life is reduced. Accessories for protection against overtemperature are available for both Grundfos MS and MMS submersible motors. When the temperature becomes too high, the protection device cut outs, and thereby avoids damage to the pump and motor.
The Grundfos MS submersible motors, except MS 402, are available with a built-in Tempcon temperature sensor for protection against overtemperature. By means of this sensor connected to the MP 204 motor protector via the power line, you can read out and/or monitor the motor temperature. As an alternative, you can fit the MS motors with Pt100 and Pt1000 sensors for temperature monitoring via a control unit.
- Protection against upthrust
In case of a very low counter pressure in connection with startup, there is a risk that the entire chamber stack may rise. This is called upthrust. Upthrust may damage both pump and motor. Therefore, both Grundfos pumps and motors are protected against upthrust as standard, preventing upthrust from occurring in the critical startup phase. The protection consists of either a built-in stop ring or hydraulic balancing.
- Built-in cooling chambers
In all Grundfos MS submersible motors, cooling chambers at the top and at the bottom of the motor and internal circulation of motor liquid ensure efficient cooling.
- Lightning protection
Grundfos recommends that you use extra lightning protection to minimize the risk of motor burnout caused by lightning strike.
- Reduced risk of short-circuit
The stator is hermetically encapsulated in stainless steel. The stator windings are embedded in polymer compound. This results in high mechanical stability, optimum cooling and eliminates the risk of short circuits in the windings caused by condensing water
- Shaft Seal
The shaft seal is of the lip seal type characterized by low friction against the rotor shaft. The choice of rubber offers good wear resistance, good elasticity and resistance to particles. The rubber material is approved for use in potable water.
