Permanent Magnet Synchronous Motor
WOLONGWolong Electric Drive WEPM5 Series Variable Frequency Speed Control Permanent Magnet Synchronous Motor
Manufactured by Wolong Electric Drive, the WEPM5 series of variable-frequency drive permanent magnet synchronous motors utilize rare-earth magnets for excitation, eliminating field current and rotor copper losses. This design achieves IE5 energy efficiency levels, offering a smaller footprint, lighter weight, and higher power density compared to equivalent asynchronous motors. The motor frame sizes range from 63 to 315, with rated powers from 0.18 to 315 kW. Rated voltage is 380 V, frequency is 50 Hz, and rated speeds are available in three options: 3000r/min, 1500r/min, and 1000r/min. Paired with a dedicated vector inverter, it delivers constant torque across a wide speed range. Available in aluminum housing (frames 63–132) or cast iron housing (frames 160–315), all models feature a totally enclosed fan-cooled (TEFC) design (IC411) with an IP55 protection rating. Insulation class F is used, tested against B-class temperature rise limits. Installation configurations include B3, B5, B35, and B14, allowing direct integration with fans, pumps, compressors, and conveyors. The stator windings are reinforced for variable-frequency operation, capable of withstanding high-frequency pulse voltages from inverters to ensure long-term stable and reliable performance.
Technical Specifications
- Housing Number63~315 (Aluminum case 63~132, Steel case 160~315)
- Rated Power0.18–31 5kW
- Rated Voltage380V
- Rated Frequency50 Hz
- Rated Speed3000 / 1500 / 1000 r/min
- Energy Efficiency RatingIE5
- Ingress Protection RatingIP55 (optional IP56)
- 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
- Speed Control MethodPaired with a dedicated vector frequency inverter for wide-range constant-torque speed control.
- Ambient Temperature-15°C to +40°C, altitude ≤ 1000 m
Key Advantages
IE5 Ultra-High Efficiency: Permanent magnet excitation and copper-loss-free rotor deliver significantly higher efficiency across the entire load range compared to equivalent asynchronous motors.
High Power Density: Smaller frame size and lighter weight at the same power rating, reducing installation space and material costs.
Wide-speed constant torque: Maintains constant torque output below rated speed when paired with a vector inverter, offering a wide speed range.
Low Noise & Low Vibration: Optimized electromagnetic design and precision dynamic balancing ensure smooth, quiet operation.
Frequency-optimized insulation: Windings are designed for VFD conditions to withstand high-frequency pulse voltages, ensuring extended service life.
Available in two structural options: lightweight aluminum housing and high-rigidity steel housing to suit various load and mounting requirements.
Easy Maintenance: Standardized junction boxes and bearing structures for efficient inspection and replacement.
Use Cases
High-Efficiency Fans and Ventilation Systems
Water Pumps and Water Supply/Dewatering Pump Stations
Air Compressors and Refrigeration Equipment
Conveying Machinery and Lifting Equipment
Machine Tool and General Mechanical Spindle Drives
Energy efficiency retrofit for metallurgy, chemical, building materials, and power industries
WEPM5 Series Variable Frequency Drive Permanent Magnet Synchronous Motor Selection Parameters (380V/50Hz)
← Swipe left or right to view full parameters; first column is fixed
| Model | Housing Size | Power (kW) | Speed (r/min) | Current (A) | Efficiency (%) | Power Factor | Torque (N·m) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| WEPM5-63M1-2 | 63 | 0.18 | 3000 | 0.46 | 82.5 | 0.93 | 0.6 | 6.5 |
| WEPM5-71M1-2 | 71 | 0.37 | 3000 | 0.9 | 84.5 | 0.93 | 1.2 | 9 |
| WEPM5-80M1-2 | 80 | 0.75 | 3000 | 1.7 | 86.5 | 0.94 | 2.4 | 13 |
| WEPM5-90S-2 | 90 | 1.1 | 3000 | 2.4 | 88 | 0.94 | 3.5 | 17 |
| WEPM5-100L-2 | 100 | 2.2 | 3000 | 4.6 | 89.5 | 0.95 | 7 | 27 |
| WEPM5-112M-2 | 112 | 4 | 3000 | 8.1 | 90.8 | 0.95 | 12.7 | 38 |
| WEPM5-132S1-2 | 132 | 5.5 | 3000 | 10.9 | 91.6 | 0.95 | 17.5 | 52 |
| WEPM5-160M1-2 | 160 | 11 | 3000 | 21.2 | 93 | 0.96 | 35 | 89 |
| WEPM5-180M-2 | 180 | 18.5 | 3000 | 35 | 93.8 | 0.96 | 58.9 | 126 |
| WEPM5-200L-2 | 200 | 30 | 3000 | 56 | 94.5 | 0.96 | 95.5 | 180 |
| WEPM5-250M-2 | 250 | 55 | 3000 | 101 | 95.2 | 0.97 | 175 | 320 |
| WEPM5-280S-2 | 280 | 75 | 3000 | 137 | 95.6 | 0.97 | 239 | 420 |
| WEPM5-315M-2 | 315 | 132 | 3000 | 239 | 96 | 0.97 | 420 | 690 |
| WEPM5-315L-2 | 315 | 200 | 3000 | 360 | 96.2 | 0.97 | 637 | 830 |
| WEPM5-315L-2-315 | 315 | 315 | 3000 | 562 | 96.4 | 0.97 | 1003 | 980 |
Data in the table is sourced from Wolong Electric Drive's "WEPM5&WEPM Variable Frequency Speed Control Permanent Magnet Synchronous Motor" product catalog. Rated voltage: 380V, rated frequency: 50Hz, efficiency class IE5, protection rating IP55. Aluminum frame models range from 63 to 132; cast iron frame models range from 160 to 315. Dedicated vector drives are required for operation.
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Weidong Electric Drive WEPM5 Series Variable Frequency Speed Control Permanent Magnet Synchronous MotorProduct Catalog (PDF) – Download for full technical specs, installation dimensions, and selection tables.
Weidong Electric Drive WEPM5 Series Variable Frequency Speed Control Permanent Magnet Synchronous MotorProduct Catalog
PDF Document · Free Public Download
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