SUBMERSIBLE MOTORS INDUSTRIAL PRODUCT AND SERVICE PRODUCT SPECIFICATION BRUSH HMA Submersible Motors BRUSH HMA has many years valuable experience with the design and manufacture of submersible motors used in the dredging industry dating back to the mid 1970’s. This experience has been built up over the years and has now set BRUSH HMA up as a major supplier to the main Dredging companies Motor Designs BRUSH HMA’s AC submersible motors are specially designed to suit customer’s requirements. Special attention has been paid to the design of a sturdy, rugged motor with: • • • • Low maintenance requirements Very high reliability Expected service lifetime of over 30 years The motor can be adjusted in speed, power and torque by means of a frequency converter A BRUSH 2.6MW submersible motor with natural cooling arrangement supplied to Boskalis for the Prins der Nederlanden vessel. Low speed designs are available up to 6.5 MW leaving out the need for a gearbox to improve the reliability of the underwater drive system. Specifics for the design are: • • • • The BRUSH submersible motors have a generous overload margin with solid lamination, winding and rotor design The BRUSH submersible motor is oil filled and therefore no re-greasing of the bearings is required. The oil filling also prevents from condensation of water in the motor The motor will be supplied with bearings to cope with the pump impeller forces and are designed for 30,000 running hours as a minimum Cooling of the motor can be either by natural cooling or forced cooling both by the surrounding seawater The Prins der Nederlanden at sea. The following instrumentation is available: • • • • • • Stator temperature measurement Bearing temperature measurement Oil temperature measurement Shaft speed measurement (redundant) Pressure difference transmitter Seawater / Oil Water leakage detection in auxiliary connection boxes Furthermore options are available for: • • • Exchangeable drive shaft Factory load test Horizontal and/or vertical execution A BRUSH 4MW submersible motor with forced cooling fitted to the Gerardus Mercator vessel, supplied to Jan de Nul.

Repair and Re-conditioning In addition to the manufacture of new submersible motors BRUSH HMA also conducts maintenance, repair and re-condtitioning of submersible motors of our own design and third party manufactures at our facility in Ridderkerk, The Netherlands. BRUSH HMA BRUSH HMA owes its origins to Smit Slikkerveer and Holec Machines en Apparaten, both were important manufacturers of electrical machines and providers of service activities. Final assembly of a new build submersible motor at our Ridderkerk facility BRUSH Specialises in: Turbogenerators Design, production of 2-pole and 4-pole...