COOLING TOWER DIRECT DRIVE
ABB combines proven laminated-frame motor technology, a high-performance permanent-magnet rotor and a matched adjustable speed drive to deliver high-torque direct drive motors purpose-built for cooling towers.
GEARLESS RELIABILITY FOR COOLING TOWER PERFORMANCE
Key AdvantagesLower Maintenance: Eliminates gearboxes, belts, and pulleys, meaning no oil changes, seal replacements, or belt tensioning are required (only basic motor re-greasing is needed).
Energy Savings: Saves significant energy (up to 60% in system optimization) by pairing a permanent magnet (PM) salient pole rotor with a variable speed drive (VSD) to run the fan at peak efficiency.
Quieter Operation: Reduces noise levels significantly compared to standard noisy motor-and-gearbox assemblies.Higher
Reliability: Removes vulnerable mechanical wear components and avoids oil contamination risks in wet, corrosive cooling tower environments.
Simpler Installation: Couples the fan directly to the motor shaft and matches existing gearbox footprints, making retrofits faster and easier without complex mechanical alignment.
TECHNICAL DATA
CTDD motors combine high-pole PM salient pole rotor designs with variable speed drives to provide efficient, low-speed, high-torque operation for direct fan drive in cooling tower applications.
Up to
3000Nm
Power range 5-2250Hp (3.7-1678kW).
Up to
60%
Saves energy and reduces mechanical stress on the system.
Frame
FL5800
Frame size FL210 to FL5800.
Rotor
IPM
Interior salient pole permanent magnet rotor for torque density and higher efficiency.
Ingress protection
IP23 | IP55
Inpro/Seal® bearing isolator combined with slinger and labyrinth non-contact shaft seal protects motor from water ingress.
Rotor option
IPM
The VPI (vacuum pressure impregnation) insulation system ensures long motor life in extreme environmental conditions.
