Submersible motors

Efficient and cost-effective cooling of submersible motors is a constant source of discussion by well and mine operators. Derating is a less-than-ideal solution. In addition to high capital and energy costs, the overlarge, downgraded motors usually require a larger well diameter. Oil cooling needs careful consideration as well – any failure can cause ecological damage.

ANDRITZ motors are equipped with the innovative modular cooling technology (MCT ), enhancing durability and also being the most efficient possible means of cooling submersible motors. The absolutely maintenance-free motors use potable water as cooling fluid and can be installed in media up to 75° C. A pump impeller brings movement into the cooling circuit and thus provides flow in the right direction. Our own development cooling channels ensure heat absorption at all thermal sources and heat evacuation, as well as providing optimal heat conduction through the outside of the motor to the flow medium. The additional use of heat exchanger modules allows precise dimensioning of the cooling capacity. For more information on our modular cooling technology please have a look at our brochures in the sidebar or contact us directly.

• Reduced investment and energy costs
• Drinking water as the cooling medium
• Suitability for media temperatures up to 75 °C
• Maximum operational reliability
• Extremely long service life

ANDRITZ interior permanent motor technology (IPM) uses a rotor with integrated permanent magnets. Existing asynchronous motors thus become permanent-magnet synchronous motors with impressive performance values: average efficiency increases of 4% and in the partial load ranges, as much as 7% at levels above 90%. Speaking of flexibility, IPM motors perfectly complement our modular shaft pump technology (MST). Through simple mounting and demounting the MST stage modules, the discharge pressure of the pump can be flexibly adjusted to meet the respective operating conditions. For more information on our interior permanent motor technology please have a look at our brochures in the sidebar or contact us directly.

• Enormous increase in efficiency up to over 100% for the same size
• A broad range of application reduces storage and logistics costs
• Extremely high efficiencies up to the part-load operational range guarantee lowest energy costs
• High efficiencies and an excellent power factor go along with lower power consumption and thus enable the use of smaller cable cross-sections
• Flexible adaptation of pump performance to the duty point via frequency converter without losses