Industrial Standard Motor
Panbu ElectricWE3 Series Low-Voltage Three-Phase Induction Motors
The WE3 series is a low-voltage three-phase asynchronous motor from Wolong, designed for the general industrial market. It features a Totally Enclosed Fan Cooled (TEFC) construction and covers frame sizes 63 to 355, with rated power ranging from 0.12 to 315kW. Rated voltages are 220V/380V/400V/660V, and rated frequencies are 50Hz/60Hz. Designed according to IEC 60034-30 energy efficiency standards, the series offers IE3 and IE4 efficiency levels, balancing high energy efficiency with cost-effectiveness. Built with premium cold-rolled silicon steel sheets and low-loss windings, combined with high-precision bearings and optimized airflow, these motors feature low temperature rise, quiet operation, and minimal vibration, making them ideal for long-term continuous duty. Mounting configurations include B3, B5, B35, and B14, allowing direct integration with gearboxes, fans, pumps, and other equipment.
Technical Specifications
- Housing Number63~355
- Rated Power0.12–31 5kW
- Rated Voltage220V/380V/400V/660V
- Rated Frequency50Hz/60Hz
- Jisu2/4/6/8 Extreme
- Energy Efficiency RatingIE3, IE4
- Ingress Protection RatingIP55 (optional IP56/IP65)
- Insulation ClassF class, temperature rise evaluated according to B class.
- Cooling MethodIC411 Totally Enclosed Fan-Cooled
- Installation MethodB3, B5, B35, B14, etc.
- Work scheduleS1 Continuous Duty
- Ambient Temperature-15°C to +40°C, altitude ≤ 1000 m
Key Advantages
High Efficiency & Energy Saving: Optimized electromagnetic design and low-loss silicon steel achieve IE3/IE4 efficiency, significantly reducing operating costs.
Robust design: Cast iron base and integral end cover for high rigidity, rapid heat dissipation, and reliable continuous heavy-duty operation.
Low Noise & Low Vibration: Precision dynamic balancing and optimized airflow design ensure smooth, quiet operation.
Insulation Durability: Class F insulation with vacuum pressure impregnation (VPI) for enhanced moisture and dust resistance, extending service life.
Flexible installation: Multiple mounting configurations and shaft extensions for direct compatibility with various transmission equipment.
Variable Frequency Compatible: Reinforced winding insulation design enables wide-range speed control when used with a variable frequency drive.
Use Cases
Fans and Ventilation Equipment
Pumps and Water Supply & Drainage Systems
Air Compressor
Conveying Machinery and Transmission Equipment
Machine Tools and General Machinery
Universal drive for metallurgy, chemical engineering, building materials, power generation, and other industries
WE3 Series Low-Voltage Three-Phase Induction Motor Selection Parameters (Representative Models for 380V/50Hz)
← Swipe left or right to view full parameters; first column is fixed
| Model | Housing Size | Power (kW) | JiShu | Speed (r/min) | Current (A) | Efficiency (%) | Power Factor | Ingress Protection Rating | Energy Efficiency Rating |
|---|---|---|---|---|---|---|---|---|---|
| WE3-63M1-2 | 63 | 0.18 | 2 | 2800 | 0.52 | 65 | 0.8 | IP5 | IE3 |
| WE3-71M1-4 | 71 | 0.37 | 4 | 1400 | 1.05 | 73.5 | 0.78 | IP5 | IE3 |
| WE3-90S-4 | 90 | 1.1 | 4 | 1420 | 2.6 | 81.4 | 0.79 | IP5 | IE3 |
| WE3-112M-4 | 112 | 4 | 4 | 1440 | 8.8 | 86.1 | 0.82 | IP5 | IE3 |
| WE3-132S-4 | 132 | 5.5 | 4 | 1440 | 11.9 | 87.2 | 0.83 | IP5 | IE3 |
| WE3-160M-4 | 160 | 11 | 4 | 1460 | 22.6 | 89.5 | 0.84 | IP5 | IE4 |
| WE3-180M-4 | 180 | 18.5 | 4 | 1465 | 36 | 91.2 | 0.86 | IP5 | IE4 |
| WE3-225S-4 | 225 | 37 | 4 | 1475 | 69.9 | 92.7 | 0.87 | IP5 | IE4 |
| WE3-250M-4 | 250 | 55 | 4 | 1480 | 102 | 93.5 | 0.87 | IP5 | IE4 |
| WE3-280S-4 | 280 | 75 | 4 | 1485 | 138 | 94.2 | 0.88 | IP5 | IE4 |
| WE3-315S-4 | 315 | 110 | 4 | 1487 | 201 | 95 | 0.88 | IP5 | IE4 |
| WE3-355M-4 | 355 | 250 | 4 | 1490 | 447 | 95.8 | 0.89 | IP5 | IE4 |
| WE3-355L-6 | 355 | 315 | 6 | 990 | 578 | 95.6 | 0.86 | IP5 | IE4 |
Download
WE3 Series Low-Voltage Three-Phase Induction MotorsProduct Catalog (PDF) – Download for full technical specs, installation dimensions, and selection tables.
WE3 Series Low-Voltage Three-Phase Induction MotorsProduct Catalog
PDF Document · Free Public Download
Industrial standard motors
WE4 Series Low-Voltage Three-Phase Induction Motors
The Wolong WE4 Series, the next generation of high-efficiency low-voltage three-phase asynchronous motors, features frame sizes 80 to 400, power ratings from 0.55 to 400 kW, and energy efficiency up to IE4/IE5. Built with high-grade silicon steel and an optimized cooling design, it is ideal for industrial applications requiring high energy efficiency and reliability.
WE5 Series Low-Voltage Three-Phase Induction Motors
The Wolong WE5 Series flagship high-efficiency low-voltage three-phase asynchronous motor, frame sizes 90 to 450, power range 1.1 to 560 kW, with IE5 efficiency rating. It features integrated smart temperature sensing and condition monitoring interfaces, designed for demanding industrial applications requiring high load rates and long-term operation.
WEBP Series Variable Frequency Drive Three-Phase Asynchronous Motors
Wolong WEBP Series Variable Frequency Drive Three-Phase Induction Motors, frame sizes H80~H355, power ratings 0.18~375kW, 2/4/6/8/10 poles, with independent forced-air cooling (IC416). Energy efficiency covers IE2~IE5 (WEBP2/WEBP3/WEBP4/WEBP5 sub-series), offering a wide speed range, low temperature rise, and reliable operation. Ideal for constant torque and constant power VFD applications.
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Cases are automatically linked by product series and application industry, allowing you to view retrofit details and performance data for similar operating conditions.
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