The Revolutionary
​Direct Drive System

• No Gearbox, No Long Drive Shaft
• Highest Pole Numbers (66,88)
• Unbeatable Efficiency
• Quiet Operation
• IP65 and C5VH per ISO 12944-2 (Painted against corrosion)

The Patented Direct Drive Technology
Gearless Motor for Cooling Tower

Direct Drive Technology
for Cooling Towers

EMF Motor proudly presents the world's most efficient motor with patented PM technology, providing ideal solutions for cooling tower applications.

Our exclusive motor technology allows us to manufacture gearless, high pole number (66-88) and highly efficienct motors. Experience reliable speed control, lower maintenance, quieter operation, and unparalleled energy saving. The fan directly couples to the motor and is controllable via sensorless flux vector drivers.

​Thanks to the abundant magnetic poles, we achieve high torque at reduced rotational speeds,  minimizing motor winding losses compared to conventional high-pole motors. This motor ensuresexceptional efficiency,even at very low speeds.

Case Study: Cooling Tower Motor Upgrade
​

Old Conventional System                          
• 37 kW, 1,470 rpm, IE2 AC motor
• Connected to gearbox (i = 6.1)
• 3-meter shaft with couplings
• Propeller at 4 degrees
• Consumed 33.5 kW
​• No mention of efficiency or voltage

Replacement
• Old system replaced with existing fan
• Propeller angle set to 8 degrees
• Both systems have airspeed of 10.2 m/sec and airflow of 193 m³/sec Benefits
• Reduced maintenance and costs
• Improved reliability
• Quieter operation (6 dB less)
• Easy installation ( Compact Design )

Replaced with SQMC200-400 Motor
• 25 kW, 208 rpm, 1150 Nm
• Efficiency: 93%
• Nominal voltage: 354 V, 62 A
• Driven by inverter   



Energy Effciency
• Conventional system consumes 
27,6% more Energy
• Estimated electrical Cost Savings of
​4.500 €/year
• Payback period is short due to Cost Savings

 Advantages of SQMC Motor

• Direct drive, no gearbox
• Highest pole numbers ( 66 - 88 )
• Increased system reliability by reducing the number of mechanical components
• Reduced maintenance
• Up to 97 % motor efficiency
• Easy installation
• Lowest operating cost​
• Low vibration, less noise

• ​Environmentally friendly
• Adjustable speed with full torque
• Stable operation at low speed
• Compact and symmetric design
• Special bearing
• Sensorless controlled by flux vector drivers
• Wide voltage range (230 to 690 VAC)

• C5VH per ISO 12944-2 (painted against corrosion)
• Simple mounting
• No shaft and coupling adjustment
• No mounting hole on the fan stack
• No need for other components (shaft, gearbox, couplings)

Specifications

• Mounting:
• Insulation:
• Protection:
• Vibration:
• Ambient Temperature:
• Thermal Protection:
• Cooling:

• Flange/Foot
• Class F
• Class IP65
• A level according to IEC 60034-14
• -10°C / +50°C
• 120°C PTO (PT100, PT1000, KTY, PTC are optional)
• Natural / IC 410

Common applications
Wet and dry cooling towers
Air cooled condensors
Air cooled heat exchangers

SQMC vs. AC Motor & Gearbox Comparison Diagram