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The YE2 Series AC Induction Motor is a totally enclosed fan-cooled (TEFC) squirrel cage three-phase asynchronous motor engineered to IE2 high efficiency standards (GB18613-2012 Grade 3 / IEC 60034-30 IE2). Available in frame sizes from 80M to 355L, with rated power from 0.75 kW to 375 kW across 2, 4, 6 and 8 pole configurations. Standard voltage is 380V at 50Hz.
The cast iron frame and IP55 protection degree deliver reliable operation in dusty, humid and outdoor industrial environments. Class F insulation with Class B (80K) temperature rise assessment gives the motor a large thermal margin and extended service life. Installation dimensions comply with IEC 72-1 and DIN 42673, ensuring drop-in compatibility with standard machine interfaces. CE, CCC and CQC energy conservation certified. ISO 9001 certified manufacturer in Ningbo, China.
The YE2 Series AC Induction Motor is a totally enclosed fan-cooled (TEFC) squirrel cage three-phase asynchronous motor designed to meet the IE2 high efficiency standard. It is the direct replacement for the older Y2 Series and is manufactured in accordance with GB18613-2012 (Grades 3 / IE2) and IEC 60034-30. The motor converts electrical energy into mechanical energy through electromagnetic induction between the stator winding and the rotor squirrel cage — there are no brushes, no commutator and no permanent magnets, which is why the YE2 delivers reliable performance with minimal maintenance across decades of continuous service.
The cast iron frame provides the structural rigidity needed to maintain air-gap concentricity under load, which is what keeps vibration and noise low even at 375 kW. Class F insulation is used throughout the stator winding, but the temperature rise is assessed at Class B (80K) rather than the full Class F limit (105K). This means the motor runs cooler than its insulation rating permits, which extends winding life and allows the motor to survive short-term overload conditions that would degrade a motor designed to its thermal limit.
The stator uses 100% copper windings and the rotor is cast aluminium. Combined with precision-machined bearing seats and dynamically balanced rotors, the YE2 Series achieves the low vibration levels required for direct coupling to pumps, fans, compressors and gearboxes without an elastomeric coupling. Installation dimensions comply with IEC 72-1 and DIN 42673, ensuring the motor drops into an existing machine footprint without adapter plates.
The tables below list the standard specifications for the YE2 Series across the main power and speed combinations. For a replacement or OEM application, confirm the required power, pole count, mounting type and shaft dimensions against the machine drawing before ordering. The full model range covers frame sizes 80M through 355L with over 100 standard variants.
| Model | Power kW | Power HP | Rated Speed | Efficiency % | Power Factor | Rated Current | Rated Torque | Ts/Tn | Tmax/Tn | Is/In |
|---|---|---|---|---|---|---|---|---|---|---|
| YE2-801-2 | 0.75 | 1 | 2875 | 77.4 | 0.83 | 1.77 | 2.49 | 2.3 | 2.3 | 7.0 |
| YE2-90S-2 | 1.5 | 2 | 2890 | 81.3 | 0.84 | 3.32 | 4.96 | 2.2 | 2.3 | 7.6 |
| YE2-100L-2 | 3 | 4 | 2890 | 84.6 | 0.87 | 6.17 | 9.91 | 2.2 | 2.3 | 7.8 |
| YE2-112M-2 | 4 | 5.5 | 2910 | 85.8 | 0.88 | 8.04 | 13.1 | 2.2 | 2.3 | 8.3 |
| YE2-132S1-2 | 5.5 | 7.5 | 2930 | 87.0 | 0.86 | 11.2 | 17.9 | 2.0 | 2.3 | 8.3 |
| YE2-132S2-2 | 7.5 | 10 | 2840 | 88.1 | 0.88 | 14.6 | 25.2 | 2.0 | 2.3 | 7.9 |
| YE2-160M1-2 | 11 | 15 | 2930 | 89.4 | 0.89 | 21.0 | 35.9 | 2.0 | 2.3 | 8.1 |
| YE2-160M2-2 | 15 | 20 | 2930 | 90.3 | 0.89 | 28.4 | 40.9 | 2.0 | 2.3 | 8.1 |
| YE2-160L-2 | 18.5 | 25 | 2935 | 90.9 | 0.89 | 34.7 | 60.2 | 2.0 | 2.3 | 8.2 |
| Model | Power kW | Power HP | Rated Speed | Efficiency % | Power Factor | Rated Current | Rated Torque | Ts/Tn | Tmax/Tn | Is/In |
|---|---|---|---|---|---|---|---|---|---|---|
| YE2-802-4 | 0.75 | 1 | 1400 | 79.6 | 0.76 | 1.88 | 5.12 | 2.3 | 2.3 | 6.6 |
| YE2-90L-4 | 1.5 | 2 | 1440 | 82.8 | 0.77 | 3.57 | 9.95 | 2.3 | 2.3 | 7.0 |
| YE2-100L1-4 | 2.2 | 3 | 1440 | 84.3 | 0.81 | 4.90 | 14.6 | 2.3 | 2.3 | 7.6 |
| YE2-100L2-4 | 3 | 4 | 1440 | 85.5 | 0.82 | 6.50 | 19.9 | 2.3 | 2.3 | 7.6 |
| YE2-112M-4 | 4 | 5.5 | 1440 | 86.6 | 0.82 | 8.56 | 26.5 | 2.2 | 2.3 | 7.8 |
| YE2-132S-4 | 5.5 | 7.5 | 1450 | 87.7 | 0.83 | 11.5 | 36.2 | 2.0 | 2.3 | 7.9 |
| YE2-132M-4 | 7.5 | 10 | 1450 | 88.7 | 0.84 | 15.3 | 49.4 | 2.0 | 2.3 | 7.5 |
| YE2-160M-4 | 11 | 15 | 1460 | 89.8 | 0.84 | 22.2 | 72.0 | 2.2 | 2.3 | 7.7 |
| YE2-160L-4 | 15 | 20 | 1460 | 90.6 | 0.85 | 29.6 | 90.1 | 2.2 | 2.3 | 7.8 |
| YE2-180M-4 | 18.5 | 25 | 1470 | 91.2 | 0.86 | 35.8 | 120.2 | 2.0 | 2.3 | 7.8 |
| YE2-180L-4 | 22 | 30 | 1470 | 91.6 | 0.86 | 42.4 | 142.9 | 2.0 | 2.3 | 7.8 |
| Model | Power kW | Power HP | Rated Speed | Efficiency % | Power Factor | Rated Current | Rated Torque | Ts/Tn | Tmax/Tn | Is/In |
|---|---|---|---|---|---|---|---|---|---|---|
| YE2-90S-6 | 0.75 | 1 | 930 | 75.9 | 0.72 | 2.09 | 7.7 | 2.0 | 2.1 | 6.0 |
| YE2-100L-6 | 1.5 | 2 | 940 | 79.8 | 0.75 | 3.80 | 15.2 | 2.0 | 2.1 | 6.5 |
| YE2-112M-6 | 2.2 | 3 | 960 | 81.8 | 0.76 | 5.38 | 21.9 | 2.0 | 2.1 | 6.6 |
| YE2-132S-6 | 3 | 4 | 960 | 83.3 | 0.76 | 7.20 | 29.8 | 2.0 | 2.1 | 6.8 |
| YE2-132M1-6 | 4 | 5.5 | 960 | 84.6 | 0.76 | 9.45 | 39.8 | 2.0 | 2.1 | 6.8 |
| YE2-132M2-6 | 5.5 | 7.5 | 960 | 86.0 | 0.77 | 12.6 | 54.7 | 2.0 | 2.1 | 7.0 |
| YE2-160M-6 | 7.5 | 10 | 970 | 87.2 | 0.78 | 16.8 | 73.8 | 2.0 | 2.1 | 7.0 |
| YE2-160L-6 | 11 | 15 | 970 | 88.7 | 0.78 | 24.2 | 108.3 | 2.0 | 2.1 | 7.2 |
| YE2-180L-6 | 15 | 20 | 970 | 89.7 | 0.81 | 31.4 | 147.7 | 2.0 | 2.1 | 7.3 |
Five design characteristics separate the YE2 Series from a commodity induction motor. Each one is measurable in field service.
The YE2 Series achieves IE2 efficiency across the full 0.75-375 kW range. At 22 kW / 4-pole, efficiency reaches 91.6%; at 18.5 kW / 2-pole, 90.9%. On a 22 kW continuous-duty pump running 6,000 hours per year, the difference between IE2 and IE1 efficiency translates to roughly 1,200 kWh of electricity saved annually — a measurable reduction in operating cost over the motor's service life.
Class F insulation is rated for a maximum winding temperature of 155°C. By assessing temperature rise at Class B (80K rise, maximum 130°C), the YE2 Series operates with a 25K thermal margin below its insulation limit. This margin absorbs brief overload conditions, high ambient temperatures and voltage imbalance without degrading the winding, directly extending motor life.
The cast iron frame and IP55 protection degree mean the motor is protected against dust ingress and water jets from any direction. This is the protection level required for outdoor installations, washdown areas, and dusty environments found in mining, chemical and food processing plants. The cast iron construction also maintains air-gap concentricity under load, keeping vibration low across the full power range.
Installation dimensions comply with IEC 72-1 and DIN 42673, which means the YE2 Series mounts directly into the same footprint as the Y, Y2 and Y3 Series motors it replaces. Shaft centre heights, foot hole spacing and flange dimensions are all standard, so no adapter plate or machine modification is required. B3, B5, B14, B34 and B35 mounting types cover virtually every machine interface.
The stator winding uses 100% copper magnet wire. Copper has lower resistivity than aluminium, which reduces I²R losses in the winding and contributes directly to the IE2 efficiency rating. Copper also has better thermal conductivity, which helps conduct heat away from the winding hot spots and further extends insulation life.
Every YE2 Series motor is produced under an ISO 9001 quality system with CE safety certification, China Compulsory Certification (CCC) and CQC energy conservation certification. Material certificates are retained against the production batch, and each motor receives routine and type tests before packing. Traceability documentation is available with the shipment.
The YE2 Series is specified wherever a reliable, efficient three-phase motor is required for continuous industrial duty. The applications below are the ones most often quoted on a Raydafon YE2 enquiry.
A common procurement question is whether to specify YE2 (IE2) or YE3 (IE3) for a given application. The comparison below uses the same 22 kW / 4-pole power rating for both series.
| Parameter | YE2 Series (IE2) | YE3 Series (IE3) |
|---|---|---|
| Efficiency Class | IE2 / GB18613 Grade 3 | IE3 / GB18613 Grade 2 |
| Efficiency at 22kW/4P | 91.6% | 92.4% |
| Annual Energy Cost (6,000h) | Baseline | ~0.9% lower |
| Regulatory Status (China) | Phased out for new installations | Current minimum for new installations |
| Initial Cost | Lower | Moderately higher |
| Best Suited For | Replacement of existing IE2 motors, regions without IE3 mandate | New installations, energy-efficiency compliance, export to EU/US |
To confirm the correct YE2 model and issue a quotation, Raydafon needs the five items below. For a replacement motor, the original nameplate data or a dimensioned drawing is usually sufficient.
| # | Required Detail | Typical Format |
|---|---|---|
| 01 | Required power and pole count | e.g., 7.5 kW, 4-pole |
| 02 | Mounting type and orientation | B3, B5, B14, B34 or B35 |
| 03 | Shaft dimensions | Shaft diameter (D) and keyway |
| 04 | Voltage and frequency | 380V 50Hz standard; other voltages available |
| 05 | Quantity and delivery date | Units required and required-on-site date |
Whether you are replacing a worn induction motor, specifying a new drive for an OEM machine build, or sourcing YE2 Series motors in production volume, Raydafon can quote to your power, pole count, mounting type and shaft requirements. OEM and project quantities supplied directly from the Ningbo factory. ISO 9001 certified. CE, CCC and CQC certified.
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Luotuo Industrial Area, Zhenhai District, Ningbo City, China
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