Email
WhatsApp
YE3 series AC induction motor is a three-phase asynchronous motor built to IE3 premium efficiency level. The rotor uses high-precision low-noise bearings and the stator winding is wound with copper wire selected for low harmonic loss. Compared with a standard IE1 induction motor at the same output power, a YE3 motor draws less current for the same shaft power, which reduces operating cost across the whole service life. Frame sizes 80 to 180 cover 0.75 kW up to 22 kW, in 2-pole, 4-pole and 6-pole synchronous speeds. Standard voltage is 380V / 50Hz, with custom voltages and frequencies available for OEM projects. Typical uses include woodworking machines, cranes, construction machinery, compressors, conveyors, dredgers, rolling mills and industrial fans.
YE3 series is offered in three synchronous speed classes. Each class covers a different power range, so you can match the motor to the driven machine without oversizing the frame.
YE3 series is designed to IE3 premium efficiency level. Compared with a standard IE1 induction motor at the same output power, a YE3 motor draws less current and releases less heat, which lowers energy cost over the full service life.
Premium efficiency class. Copper stator winding, low-loss silicon steel laminations and high-precision bearings reduce current draw and heat generation at full load.
Standard efficiency class. Draws more current for the same shaft output, runs hotter and consumes more energy over the service life. Many markets require IE3 or higher for new equipment.
YE3 series covers frame 80 to 180 and 0.75 kW to 22 kW. The table below shows the typical power range for each frame size at 2-pole, 4-pole and 6-pole configurations.
YE3 series supports five standard mounting configurations that follow IEC standard dimensions. These are the configurations most commonly requested by industrial OEM buyers.
Standard horizontal foot-mounted motor, frames 80 to 180. The most common configuration for pumps, fans, conveyors and compressors.
Large flange on the drive end. Used where the motor bolts directly to a gearbox or machine flange, frames 80 to 180.
Small flange on the drive end for compact installation, frames 80 to 112. Ideal when space is limited or the motor weight must be kept low.
Combination of small flange and foot for higher mounting rigidity, frames 80 to 132. Used where the drive must resist vibration or reversing load.
Combination of large flange and foot for maximum mounting rigidity, frames 80 to 180. Standard for heavy pumps, compressors and machine tools.
Non-standard shaft, custom flange dimensions and special mounting positions can be produced on request for OEM projects.
YE3 series AC induction motor is used wherever an industrial machine needs a three-phase motor with IE3 efficiency, standard IEC mounting dimensions and reliable continuous duty.
Saws, planers, sanders and dust extraction fans on industrial woodworking lines.
Travel, hoist and slewing drives on cranes and industrial lifting equipment.
Concrete mixers, pumps, compactors and site plant drive motors.
Piston, screw and scroll compressor drives where continuous duty matters.
Belt, roller and screw conveyor drive motors on manufacturing and logistics lines.
Sand pumps, slurry pumps and dredger drive motors where dust and moisture are present.
Rolling mill auxiliary drives and machine tool spindle or feed motors.
Centrifugal fans, axial fans and blowers in HVAC, kilns and process plants.
Any machine that needs an IE3 motor with IEC standard mounting and reliable continuous duty.
Reference parameter table for the YE3 series. Exact ratings for each frame are available on request and are listed in the full data sheet.
| Parameter | 2-Pole (3000 rpm) | 4-Pole (1500 rpm) | 6-Pole (1000 rpm) |
|---|---|---|---|
| Rated power | 0.75 – 22 kW | 0.75 – 22 kW | 0.75 – 15 kW |
| Frame range | 80 – 180 | 80 – 180 | 90 – 180 |
| Rated voltage | 380V | 380V | 380V |
| Rated frequency | 50Hz | 50Hz | 50Hz |
| Efficiency class | IE3 | IE3 | IE3 |
| Efficiency range | 80.7% – 92.7% | 82.5% – 93.0% | 78.9% – 91.2% |
| Power factor range | 0.82 – 0.89 | 0.75 – 0.86 | 0.71 – 0.81 |
| Locked-rotor torque | Ts/Tn ≥ 2.0 | Ts/Tn ≥ 2.0 | Ts/Tn ≥ 2.0 |
| Max torque | Tmax/Tn ≥ 2.3 | Tmax/Tn ≥ 2.3 | Tmax/Tn ≥ 2.1 |
| Locked-rotor current | Is/In ≤ 7.0 – 8.3 | Is/In ≤ 6.6 – 7.9 | Is/In ≤ 6.0 – 7.3 |
| Duty cycle | S1 continuous | S1 continuous | S1 continuous |
| Protection grade | IP55 | IP55 | IP55 |
| Insulation class | F | F | F |
| Mounting | B3 / B5 / B14 / B34 / B35 | B3 / B5 / B14 / B34 / B35 | B3 / B5 / B35 |
YE3 series uses a compact cast iron or aluminium frame with IEC standard dimensions, so the motor can replace an existing IE1 or IE2 motor without changing the mounting plate.
Common questions about IE3 efficiency, mounting, voltage and OEM supply.
Provide rated power, synchronous speed, voltage, frequency, mounting configuration and driven machine description. Raydafon will confirm the correct YE3 frame and mounting, and reply with a factory-direct quotation within 24 hours.
Address
Luotuo Industrial Area, Zhenhai District, Ningbo City, China
Tel
