250mm gavanised sheet steel backward curve/inclinded centrifugal fan

1.YWFB250,230V,50/60Hz,2350rpm 2.UL,CE approval,S1 continuous operation 3.thermal protector

1. An overview of centrifugal fans

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°C~60°C.

6. The average service life of motors is over 30,000 hours.

7. Our products have gotten UL approval, CE approval and CCC approval.

2. Brief Introduction of AC Backward Centrifugal fan YWFB250

—Material: Impeller: gavanised sheet steel

                    Rotor: Coated in black

— The number of blades: 11

—Direction of rotation: Clockwise, seen on rotor

—Type of protection: IP54 or IP44

—Insulation class: B or F

—Mounting position: Shaft horizontal or rotor on bottom; rotor on top on request(Any)

—Condensate discharges: Rotor-side

—Mode of operation: Continuous operation (S1)

—Bearings: Maintenance- free ball bearings

—Motor protection: Design with thermal overload protector

—Cable exit: variable, lateral

—Product conforming to standard: CE Approval

—Approval: UL Approval, CCC Certificate

3. performance parameters

Model	Voltage V	Frequency Hz	Current A	Input Power     W	Speed   RPM	Capacitor μF	Net weight KG	Noise dBA	Air volume m3 /h	Curve
YWFB2E250	230	50/60	0.70/1.0	165/235	2550/2750	5	3	68/69	1300/1360	1,2
YWFB2E250	115	60	2.45	268	3100	25	3	69	1550	3
YWFB4E250	230	50/60	0.35/0.36	65/80	1450/1700	3	3	55/59	750/950	4,5

 4. shape and the size of installation

5. air volume and static pressure curve

250mm gavanised sheet steel backward curve/inclinded centrifugal fan