Production description
(1)YWF External Rotor Centrifugal Fans are divided into forward centrifugal fan and backward centrifugal fan according to curved blades, which have compact structure, convenient installation, credible running, little noise, energy saving and high efficiency.
(2)Several speed ranks, adapt to both frequency conversion and voltage transformation speed changing active. Our products are widely used in duct fans, roof ventilator, air purifying equipment, air conditioning, and household appliances, etc.
(3)The voltage of the single phase motor is 220V, 50/60 Hz, and the voltage of three phase motors is 380V, 50/60Hz. We can also supply other fan motors with different voltages and frequencies according to clients' requirement.
(4)The safety grade of this series is IP54, and the insulation classes are class B and class F.
(5)The applicable ambient temperature of the fan motors used in condenser is from -30℃~60℃.
(6) The average service life of motors is over 30,000 hours.
(7) Our products have gotten UL approval, CE approval and CCC approval.
(8)Typical applications
Exhausting industrial processes, roof and building ventilation, clean room and other sensitive HEPA filtering application, laboratory and research facility ventilation, air conditioner, heat exchangers, in-line duct blowers, range hood, fire place inserts, humidifiers, dehumidifiers, hand dryers

Performance parameters

Model	Voltag V	Frequency HZ	Current A	Input Power W	Speed RPM	Max Air Flow M³/H	Capacitor μF	Noise dB(A)	Curve
YWFB2E220	230	50/60	0.4/0.55	90/120	2600/2900	900/1000	3	72/75	①②
YWFB2E220	115	50/60	0.8/1.1	90/120	2600/2900	900/1000	12	72/75	①②
YWFB4E220	230	50/60	0.18/0.21	41/48	1450/1700	430/500	2	50/60	③④