Permanent Magnet Direct-Drive HVLS Fan
A low-speed, high-volume ceiling fan up to 7.3 m in diameter. Direct drive with no gearbox, the energy-saving choice for large-space cooling.
7.3m
Max blade diameter
1.5kW
Max running power
5-8°C
Perceived cooling
HVLS (High Volume, Low Speed) fans reach 7.3 m in blade diameter and need only 50 rpm to set up a circulating airflow field, moving more air than any comparable equipment.
The streamlined blades follow aerodynamic design. Driven by 1.5 kW or less, one fan covers a very large area and lowers perceived temperature by 5-8°C. Running 8 hours a day costs about NT$36 in electricity (at NT$3/kWh industrial rate). Durable and maintenance-free.
Features
High efficiency across the full speed and load range, saving energy
Higher MTBF (mean time between failures)
High torque at low speed drives the blades directly: no gears, no friction, no mechanical clearance
Low noise
Easy to install and maintain
High torque, high rigidity, steady at low speed
Why direct drive
Conventional large fans use an induction motor with a gearbox, which hurts efficiency and maintenance. A direct-drive motor connects the blades straight to the rotor.
CONVENTIONAL
Induction motor + gearbox
- Low gearbox efficiency, high energy use and noise
- Rising internal gearbox pressure causes oil leaks
- Power loss after reduction lowers overall efficiency
- Mechanical wear requires regular maintenance
- Bulky and complicated to install
DIRECT DRIVE
Permanent magnet direct-drive motor
- Blades mount directly on the rotor. No gearbox, pulley or chain in between.
- A short, wide core stack delivers high torque at low speed with no reduction needed.
- Full torque even at zero speed or stall, and stable torque across the speed range with a balanced three-phase load.
Specifications
| Model | Blade diameter | Blades | Motor dia. mm | Speed rpm | Weight kg | Airflow CFM | Noise dB | Max coverage m² | Install height m | Drive input V | Drive max power kW |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D50-7360 | 7.3 m | 6 | 276 | 60 | 96 | 866,000 | 30 | 1,200 | 7-12 | 220 | 1.5 |
| D50-6080 | 6.0 m | 6 | 276 | 80 | 84 | 774,000 | 30 | 800 | 6-10 | 220 | 1.5 |
| D50-5095 | 5.0 m | 6 | 276 | 95 | 68 | 686,000 | 35 | 650 | 5-8 | 220 | 1.5 |
| D50-40100 | 4.0 m | 6 | 276 | 100 | 62 | 616,500 | 35 | 540 | 4-6 | 220 | 1.5 |
| D36-30110 | 3.0 m | 6 | 228 | 110 | 38 | 580,600 | 35 | 490 | 3-5 | 220 | 1.5 |
Specifications carried over from the previous catalog. Delivered units follow the shipping datasheet.
Direct-drive motor parameters
- Rated power
- 0.88kW
- Rated speed
- 60rpm
- Rated torque
- 140Nm
- Rated current
- 1.8A
- Rated frequency
- 33Hz
- Peak torque
- 400Nm
- Peak current
- 5.1A
- Torque constant
- 77.8Nm/A
- Back EMF
- 306V
- Protection class
- IP65
Installation photos
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