Asynchronous motor
Asynchronous Motor - High Performance Industrial Solution
Our asynchronous motors are designed for industrial applications requiring reliable and efficient operation. With decades of engineering expertise, we deliver motors that consistently outperform competitors in durability and energy efficiency.
Key Features:
- Robust cast iron frame construction
- High-grade copper windings for maximum efficiency
- Precision-balanced rotor for smooth operation
- Thermal protection system prevents overheating
- Low maintenance design with sealed bearings
Technical Specifications
| Model | Power (kW) | Voltage (V) | Speed (RPM) | Efficiency (%) |
|---|---|---|---|---|
| AM-1.5 | 1.5 | 230/400 | 1420 | 85.5 |
| AM-3.0 | 3.0 | 230/400 | 1420 | 87.2 |
| AM-5.5 | 5.5 | 400 | 1440 | 89.1 |
| AM-7.5 | 7.5 | 400 | 1460 | 90.3 |
Performance Data
| Parameter | Value |
|---|---|
| Starting Torque | 160% of rated torque |
| Pull-up Torque | 200% of rated torque |
| Breakdown Torque | 250% of rated torque |
| Noise Level | ≤68 dB(A) |
| Vibration Level | ≤2.8 mm/s |
| Insulation Class | F (155°C) |
Asynchronous Motor FAQ
Q: What is the maximum ambient temperature for operating an asynchronous motor?
A: Our asynchronous motors are designed to operate in ambient temperatures up to 40°C (104°F) at sea level. For higher ambient temperatures or altitude operation, special design modifications may be required. The thermal protection system will automatically shut down the motor if internal temperatures exceed safe operating limits, preventing damage to windings and bearings.
Q: How often should bearings be lubricated in an asynchronous motor?
A: The lubrication interval for asynchronous motor bearings depends on operating conditions. Under normal conditions with our sealed bearings, relubrication is typically required every 10,000 operating hours or 2 years, whichever comes first. For motors operating in harsh environments (high temperature, dusty conditions, or continuous operation), we recommend checking bearing condition every 6 months and lubricating as needed.
Q: Can asynchronous motors be used with variable frequency drives (VFDs)?
A: Yes, our asynchronous motors are VFD-compatible when equipped with the optional inverter-duty package. This includes reinforced insulation, phase paper, and special bearing protection to handle the higher electrical stresses from PWM drives. For best performance, we recommend keeping the carrier frequency below 4 kHz and using properly sized output filters to protect the motor insulation system from voltage spikes.
Installation Guidelines
- Ensure proper alignment with driven equipment (max 0.05mm radial misalignment)
- Provide adequate ventilation (minimum 100mm clearance around motor)
- Use proper lifting equipment (lifting eyes rated for motor weight)
- Verify correct voltage and phase connection
- Check rotation direction before coupling to load
Maintenance Schedule
| Interval | Action |
|---|---|
| Daily | Visual inspection for unusual noise/vibration |
| Monthly | Check terminal connections and tightness |
| 6 Months | Inspect bearings and lubrication condition |
| Annually | Megger test insulation resistance (min 1MΩ) |
| 2 Years | Complete motor overhaul (professional service recommended) |
Asynchronous Motor Applications
- Pumps and compressors
- Conveyor systems
- Fans and blowers
- Machine tools
- Mixers and agitators
- Packaging equipment
Energy Efficiency Features
Our asynchronous motors meet IE3 efficiency standards as standard, with IE4 available for high-efficiency applications. Key efficiency features include:
- Optimized stator slot design reduces eddy current losses
- Low-loss electrical steel laminations
- Precision air gap control minimizes stray losses
- Computer-optimized cooling system
Asynchronous Motor FAQ (Continued)
Q: What protection features are included with your asynchronous motors?
A: Our standard asynchronous motors include built-in thermal protection via PTC thermistors or Klixon thermal protectors (depending on model). Optional protection packages include: moisture detection sensors, vibration monitoring, bearing temperature sensors, and current monitoring relays. All protection devices are pre-wired to terminal boxes for easy connection to control systems.
Q: How does altitude affect asynchronous motor performance?
A: At higher altitudes, reduced air density decreases cooling efficiency. For installations above 1000 meters, we recommend derating the motor power by approximately 1% per 100 meters above 1000m, or selecting a specially designed high-altitude version with enhanced cooling capacity. The insulation system must also account for the reduced dielectric strength of thinner air at elevation.
Q: What is the expected service life of your asynchronous motors?
A: With proper maintenance and under normal operating conditions, our asynchronous motors typically achieve 50,000-100,000 operating hours before major overhaul. Bearing life typically exceeds 30,000 hours, while winding life depends on thermal cycling and voltage stresses. In continuous duty applications with stable loads, many units operate reliably for 15-20 years before requiring rewinding or complete replacement.
Customization Options
- Special voltages (208V, 460V, 575V, 690V)
- Alternative mounting configurations (flange, footless)
- Special shaft extensions (longer, keyless, tapered)
- Explosion-proof versions (ATEX, IECEx certified)
- Corrosion-resistant coatings for harsh environments
- Custom paint colors for corporate branding