Poly Run Air Conditioning&Refrigerator products

EXternal Rotor Axial Fan



1. External rotor fan blade adopts advanced aerodynamic design, which beautiful in appearance, high efficiency

2. Fan rotor is directly with rotor and blade, that adopt dual-sided dynamic balance, dynamic balance achieved G6.3

3. The fan blade, rotor and grid is all sprayed ,the surface is bright appearance that is not easy oxidation and discoloration, and has good corrosion-resistant effect, motor cover also by the special treatment

4. Fan normal ambient temperature: -25℃ to +60℃, if the temperature range exceed the above, our factory can be customized according to customer requirements

5. The insulation grade of currently supplied fan is B-class, F-class and H-class, the protection class is IP54. At present, we can also supply the fan of working environment temperature: -40℃ to +60℃ and  -25℃ to +80℃. All fans can install thermal protection in them. We will put the IP56 external rotor motor with new structure soon, and this structure has got national patent. It can apply to the high humidity and bad environment

6. Fans have single-phase capacitor running and three-phase asynchronous running. Single-phase motor has 380V/50Hz and 220V/60Hz. Three-phase motor has 380V/50Hz and 380V/60Hz. At the same time can provide customers with motors of the special requirements such as: special voltage, dual voltage and so on

7. The line fan motor can be directly leaded out, and can provide various forms of water-proof junction box for the user’s selection

8. The tasting data of fan flow curves from the wind room is accurate and reliable 


External Rotor Axial Fans Model Introduction

YWF 4 D 1 – 500 –M S -7 L – A -V


1. AC Asynchronous external rotor axial fans

2. Number of poles

3. D: Three-phase motor / E: Single-phase motor

4. 1: 50Hz / 2: 60Hz / 3: 50Hz/60Hz

5. The diameter of blade

6. M: Big air volume / G: High air volume / A: A Series / C: C Series (Use on the normal temperature and high humidity) / E: E Series (Evaporator only)

7. Air flow direction , S: Sucking / B: Blowing

8. Blade quantity

9. Blade shape, L: Sickle type / XL: New sickle type / F: Square type / LT: conjoined type

10. A: Without grid / B: Flat grid / C: Flat concave grid / D: Concave flat grid / E: Standard grid / F: Inlet ring / G: Inlet ring with square plate

11. V: Two-voltage motor / S: Two-speed motor / T: Three-speed motor