Products
Variable-Speed Permanent Magnet Synchronous Motor for centrifugal fan & Coolers (600kW-900kW)
◇High efficiency (>95%), high power density, low maintenance. ◇Requires a matched drive controller and cannot start directly from line frequency.
Classification:
Working Principle of Permanent Magnet Synchronous Motor (PMSM)
The Permanent Magnet Synchronous Motor (PMSM) converts electrical energy into mechanical energy through electromagnetic interaction. Its core working principle is as follows:
Magnetic Field Generation
◇Stator: When three-phase AC current flows through the stator windings, it generates a rotating magnetic field (speed determined by the power supply frequency).
◇Rotor: Equipped with permanent magnets (e.g., neodymium iron boron), creating a fixed magnetic field.
Synchronous Rotation
◇The stator’s rotating magnetic field "pulls" the rotor’s permanent magnetic field, forcing the rotor to rotate at the same speed (synchronous speed) without slip.
Torque Generation
◇The angle (load angle) between the stator’s magnetic field and the rotor’s permanent magnetic field produces electromagnetic torque, driving the load.
◇By adjusting the current phase (vector control), torque output efficiency can be optimized.
Key Features
◇High efficiency (>95%), high power density, low maintenance.
◇Requires a matched drive controller and cannot start directly from line frequency.
| Product | Product Category | Voltage | Power Range | Product Application |
| Permanent Magnet Synchronous Motor 600-3000RPM |
Explosion-proof | 380/415V/460V | 11KW-315KW,355KW-710KW | Oil & gas extraction (drilling rigs, oil pumps, compressors) Refineries (reactor agitators, centrifugal pumps) Chemical plants (flammable liquid transfer, gas compression) Underground ventilation fans, conveyor belt drives Coal dust transport equipment, drainage pumps Alcohol extraction workshops, spray drying towers Flour/sugar powder conveying systems, edible oil pressing equipment |
| 660V | 11KW-315KW,355KW-710KW | |||
| 1140V | 11KW-315KW,355KW-1600KW | |||
| 3300V | 200KW-1600KW | |||
| 6000V | 200KW-1600KW | |||
| 10000V | 200KW-1600KW | |||
| Non-explosion proof | 380/415V/460V | 11KW-315KW,355KW-710KW | For textile/engineering vehicles/belt machine tightening/ air cooling island/flotation machine/separator/mixer/grinding machine/ball mill etc |
|
| 660V | 11KW-315KW,355KW-710KW | |||
| 1140V | 11KW-315KW,355KW-3000KW | |||
| 3300V | 200KW-3000KW | |||
| 6000V | 200KW-3000KW | |||
| 10000V | 200KW-3000KW |
Technical Specifications
Other voltages customizable, up to 10KV
| Frame | Pole | Installation dimensions | Outline size | |||||||||||||
| A | B | C | D | E | F | G | H | K | BB | AB | AC | AD | HD | L | ||
| 355 | 4~6 | 630 | 900 | 315 | 100 | 210 | 28 | 90 | 355 | 28 | 1500 | 760 | 1040 | 760 | 1350 | 2150 |
| 400 | 4~8 | 710 | 1000 | 335 | 110 | 210 | 28 | 100 | 400 | 35 | 1700 | 860 | 1180 | 820 | 1450 | 2350 |
| 450 | 4 | 800 | 1120 | 355 | 120 | 210 | 32 | 109 | 450 | 35 | 1800 | 960 | 1280 | 870 | 1600 | 2600 |
| 6~10 | 800 | 1120 | 355 | 130 | 250 | 32 | 119 | 450 | 35 | 1800 | 960 | 1280 | 870 | 1600 | 2600 | |
| 500 | 4 | 900 | 1250 | 475 | 130 | 250 | 32 | 119 | 500 | 42 | 1800 | 1100 | 1420 | 960 | 1750 | 2800 |
| 6~12 | 900 | 1250 | 475 | 140 | 250 | 36 | 128 | 500 | 42 | 1800 | 1100 | 1420 | 960 | 1750 | 2800 | |
| 560 | 4 | 1000 | 1400 | 500 | 150 | 250 | 36 | 138 | 560 | 42 | 1850 | 1200 | 1520 | 1120 | 2000 | 2850 |
| 6~12 | 1000 | 1400 | 500 | 160 | 300 | 40 | 147 | 560 | 42 | 1850 | 1200 | 1520 | 1120 | 2000 | 2850 | |
| 630 | 4 | 1120 | 1600 | 530 | 170 | 300 | 40 | 157 | 630 | 48 | 2050 | 1350 | 1670 | 1190 | 2290 | 3300 |
| 6~12 | 1120 | 1600 | 530 | 180 | 300 | 45 | 165 | 630 | 48 | 2050 | 1350 | 1670 | 1190 | 2290 | 3300 | |
| 710 | 6~12 | 1400 | 1800 | 530 | 200 | 350 | 45 | 185 | 710 | 56 | 2200 | 1600 | 1920 | 1300 | 2600 | 3750 |
| 800 | 6~12 | 1600 | 2000 | 530 | 220 | 350 | 50 | 203 | 800 | 56 | 2600 | 1850 | 2170 | 1430 | 2900 | 4100 |
| 900 | 8~12 | 1800 | 2240 | 600 | 250 | 410 | 56 | 230 | 900 | 66 | 2900 | 2100 | 2500 | 1650 | 3100 | 4100 |
| 1000 | 12 | 2000 | 2500 | 600 | 280 | 470 | 63 | 260 | 1000 | 66 | 3200 | 2400 | 2800 | 1750 | 3300 | 4600 |
| Model | Rated Power (kW) |
Rated Current A |
Synchronous speed (r/min) |
Rated Torque (N.m) |
Rated Efficiency (%) |
Rated Power Factor |
Pull-in torque multiplier |
Pull-out torque multiplier |
Locked-rotor torque multiplier |
Locked-rotor current multiplier |
| JXSSKK-500-6-500-10000 | 500 | 31.5 | 1000 | 4775.0 | 95.4 | 0.96 | 1 | 1.6 | 1.2 | 9 |
| JXSSKK-560-6-500-10000 | 560 | 35.2 | 1000 | 5348.0 | 95.8 | 0.96 | 1 | 1.6 | 1.2 | 9 |
| JXSSKK-630-6-500-10000 | 630 | 39.6 | 1000 | 6016.5 | 95.8 | 0.96 | 1 | 1.6 | 1.2 | 9 |
| JXSSKK-710-6-500-10000 | 710 | 44.5 | 1000 | 6780.5 | 95.9 | 0.96 | 1 | 1.6 | 1.2 | 9 |
| JXSSKK-800-6-560-10000 | 800 | 50.1 | 1000 | 7640.0 | 96.0 | 0.96 | 1 | 1.6 | 1.2 | 9 |
| JXSSKK-900-6-560-10000 | 900 | 56.3 | 1000 | 8595.0 | 96.2 | 0.96 | 1 | 1.6 | 1.2 | 9 |
| JXSSKK-1000-6-560-10000 | 1000 | 62.5 | 1000 | 9550.0 | 96.3 | 0.96 | 1 | 1.6 | 1.2 | 9 |
| JXSSKK-1120-6-560-10000 | 1120 | 69.8 | 1000 | 10696.0 | 96.5 | 0.96 | 1 | 1.6 | 1.2 | 9 |
| JXSSKK-1250-6-630-10000 | 1250 | 77.8 | 1000 | 11937.5 | 96.6 | 0.96 | 1 | 1.6 | 1.2 | 9 |
| JXSSKK-1400-6-630-10000 | 1400 | 87.0 | 1000 | 13370.0 | 96.8 | 0.96 | 1 | 1.6 | 1.2 | 9 |
| JXSSKK-1600-6-630-10000 | 1600 | 99.3 | 1000 | 15280.0 | 96.9 | 0.96 | 1 | 1.6 | 1.1 | 9 |
| JXSSKK-1800-6-710-10000 | 1800 | 111.7 | 1000 | 17190.0 | 96.9 | 0.96 | 1 | 1.6 | 11 | 9 |
| JXSSKK-2000-6-710-10000 | 2000 | 124.1 | 1000 | 19100.0 | 96.9 | 0.96 | 1 | 1.6 | 1.1 | 9 |
| JXSSKK-2240-6-710-10000 | 2240 | 139.0 | 1000 | 21392.0 | 96.9 | 0.96 | 1 | 1.6 | 1.1 | 9 |
| JXSSKK-2500-6-710-10000 | 2500 | 155.0 | 1000 | 23875.0 | 97.0 | 0.96 | 1 | 1.6 | 1.1 | 9 |
| JXSSKK-2800-6-800-10000 | 2800 | 173.4 | 1000 | 26740.0 | 97.1 | 0.96 | 1 | 1.6 | 1.1 | 9 |
| JXSSKK-3150-6-800-10000 | 3150 | 195.1 | 1000 | 30082.5 | 97.1 | 0.96 | 1 | 1.6 | 1.1 | 9 |
| JXSSKK-3550-6-800-10000 | 3550 | 219.7 | 1000 | 33902.5 | 97.2 | 0.96 | 1 | 1.6 | 1.1 | 9 |
| JXSSKK-4000-6-900-10000 | 4000 | 247.2 | 1000 | 38200.0 | 97.3 | 0.96 | 1 | 1.6 | 1.1 | 9 |
| JXSSKK-4500-6-900-10000 | 4500 | 278.2 | 1000 | 42975.0 | 97.3 | 0.96 | 1 | 1.6 | 1.1 | 9 |
| JXSSKK-5000-6-900-10000 | 5000 | 308.7 | 1000 | 47750.0 | 97.4 | 0.96 | 1 | 1.6 | 1.1 | 9 |
Advantages of Permanent Magnet Synchronous Motor (PMSM)
High Efficiency & Energy Savings
◇ Achieves IE4/IE5 efficiency levels (up to 98%) due to zero rotor losses
◇ 15-30% lower energy consumption compared to induction motors
◇ Maintains high efficiency even at partial loads
Superior Power Density
◇ Compact size with 20-40% higher torque-to-weight ratio
◇ Enables direct-drive applications by eliminating gearboxes
Precision Performance
◇ Excellent speed stability (±0.1% speed regulation)
◇ Fast dynamic response with vector control capability
◇ Smooth torque production with minimal cogging
Low Maintenance & Long Life
◇ No brushes/slip rings (brushless design)
◇ Reduced wear with fewer moving parts
◇ Permanent magnets retain properties for decades
Smart Control Compatibility
◇ Seamless integration with modern drives and IoT systems
◇ Enables predictive maintenance through embedded sensors
◇ Adaptable to Industry 4.0 automation networks
Environmental Benefits
◇ No rare earth material waste during operation
◇ Lower operating temperatures reduce cooling needs
Typical Applications
| ✔ Industrial Ventilation (Mining, Cement, Steel Plants) ✔ HVAC Systems (Large Commercial Buildings, Data Centers) ✔ Power Plant Cooling Fans ✔ Wastewater Treatment Aeration Blowers ✔ Marine & Offshore Ventilation |
 |
FAQ
Q:What are the differences between PMSM and induction motors (asynchronous motors)?
Answer:
◇ Higher efficiency: PMSM has no rotor losses, achieving IE4/IE5 efficiency (>96%), while induction motors typically reach IE2/IE3 (90-95%).
◇ More precise control: PMSM supports vector control with ±0.1% speed accuracy, whereas induction motors have slip (2-5%).
◇ Compact size: For the same power rating, PMSM is 30%-50% smaller than induction motors.
◇ Lower maintenance: Brushless design with no slip rings, requiring minimal maintenance.
Q:Can permanent magnets demagnetize? How to prevent it?
Answer:Demagnetization risks: High temperature (>150°C), strong reverse magnetic fields, or mechanical impacts may cause demagnetization.
Preventive measures:
◇ Use high-temperature-resistant magnets (e.g., NdFeB N42SH, HcJ≥35kOe).
◇ Design motor with protective slots for magnets.
◇ Install temperature sensors for real-time monitoring.
Q: Does PMSM require a drive? Can it start directly from line power?
Answer:Drive required:
◇ PMSM needs a variable frequency drive (VFD) for speed control.
◇ Direct line power startup may cause loss of synchronization and current surges (potential motor damage).
Recommended control methods: Field-oriented control (FOC) or direct torque control (DTC).
Q:What are the protection ratings for industrial PMSMs? How to select?
Answer: Common protection ratings:
◇ IP65: Dustproof + water jet protection (suitable for general industrial environments).
◇ IP66/IP67: Dustproof + strong waterproofing (for harsh environments like chemical plants and mines).
◇ Explosion-proof: Ex d IIC T4 (for hazardous areas like oil & gas).
Q:How does PMSM perform under low-speed, high-load conditions?
Answer:Key advantage:
◇ Delivers rated torque at low speeds (induction motors require derating).
◇ Typical applications: Ball mills, crushers, and high-inertia startup scenarios.
Keyword:
Magnetic Field Generation
Synchronous Rotation
Permanent Magnet Synchronous Motor
High Efficiency & Energy Saving
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