China best 3-Phase 380-440VAC 7.5kw 24000rpm High Speed Permanent Magnet Electric Motor vacuum pump belt

Product Description

Air cooled 7.5KW 24000RPM high speed Permanent magnet AC electric motor 
 

Feature:
1) Air cooled motor, early operation
2) Extra high speed to 24000rpm 
3) small size L235mm* Φ260mm
4) light weight : ONLY 19KG
5) Long lifetime, durability, easy mantainance
6) Application: turbine, fan, blowers, centrifugal compressors

Specifications: 
Model#: SRPM112H4F7-5C
Voltage: 380V AC
Rated Power: 7.5KW
Rate Torque : 2.98 N.m
Working speed: 24000rpm
Efficiency: 95.5%
Duty Type: S1
Isolation: H
Water/dust Proof: IP54
Pole Number: 4
N Weight: 19KG
Cooling Method: Forced air cooling

Other models you may interested in:

Motor type Voltage
(V AC)
Rated power
(kw)
Rated torque (N.m) Rated speed
(rpm)
Efficiency
(%)
Duty type  Insulation   Ingress protection Pole Number Net Weight
(kg)
Cooling Method position signal
SRPM112H4F15 380 15 5.97 24000 95.5 S1 H IP54 4 25 Forced Air  Resolver
SRPM112H4F18.5 380 18.5 8.41 21000 95.5 S1 H IP54 4   Forced Air  Resolver
SRPM130H4F22 380 22 10 21000 95.5 S1 H IP54 4   Forced Air  Resolver
SRPM130H4F37 380 37 19.63 18000 95.5 S1 H IP54 4   Forced Air  Resolver

Packaging:
Composite wooden box or paper box are optional

FAQ
1. Can performanent magnet synchronous motor be used as generator? 

Yes. Permanent magnet synchronous motor  can work as a generator because of its special working theory. If it runs CW as a motor, then runs CCW as a generator. But please kindly note, if when you want to work it as a generator, you need to change a suitable motor controller with AFE function
 
2. Why can not directly use 3 phase ac supply voltage to start permanent magnet synchronous motor? 
Becuase rotor is with big innertia, and magetic files spins so fast that static rotor has no way to spin with magetic filed. 
 
3. Any special technical request on this motor's VFD driver? And Do you have such driver? 
Permanent magnet synchronous motor's driver should be vector control VFD with special inner software, such as CHINAMFG 6SE70 series, Yakawa CR5 series, ABB ACS800 series, CHINAMFG A740 series, B&R P84 and P74 series, etc.. Yes, our MH300 series VFD matches with this motor. 
 
4. Is there any protective measures to defend permanent magnet rotor from failure? 
Yes, each permanent magnet rotor passes corrossion resistance, consistency, high temperature demagnetization test, linear demagnetization test, etc. Its demagnetization index is within 2%. But if working environment is serious oxiditive corrosion, kindly advise for higher protection level. 
 
5. Where is this permanent magnet synchronous motor normally used to? 
This permanent magnet synchronous motor is normally used to variable frequency speed situation.

 

Application: Industrial
Speed: High Speed
Number of Stator: Three-Phase
Function: Driving
Casing Protection: Protection Type
Number of Poles: 4
Samples:
US$ 1250/Piece
1 Piece(Min.Order)

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3 phase motor

Can you explain the advantages of using a 3-phase motor?

Using a 3-phase motor offers several advantages over other types of motors. Here's a detailed explanation of the advantages of using a 3-phase motor:

  • High Efficiency: 3-phase motors are known for their high efficiency. They can convert electrical energy into mechanical energy with minimal losses. The balanced three-phase power supply and the design of the motor result in a smoother and more efficient operation compared to single-phase motors.
  • Power Factor: 3-phase motors have a better power factor compared to single-phase motors. Power factor is a measure of how effectively the motor utilizes the electrical power. By having a higher power factor, 3-phase motors reduce the amount of reactive power required from the power supply, resulting in improved overall power system efficiency.
  • High Starting Torque: 3-phase motors can provide high starting torque, making them suitable for applications that require the motor to start under load. The three-phase power supply and the design of the motor enable it to produce a strong rotating magnetic field, which allows for efficient starting and acceleration of the motor's rotor.
  • Smooth Operation: The rotating magnetic field produced by the three-phase power supply results in smooth and continuous operation of the motor. This characteristic makes 3-phase motors ideal for applications that require constant and reliable operation, such as industrial machinery, pumps, compressors, and HVAC systems.
  • Compact Size and Weight: 3-phase motors tend to be more compact and lightweight compared to equivalent power single-phase motors. This compactness is due to the even distribution of the windings around the stator and the absence of additional starting components often required in single-phase motors.
  • Higher Power Output: 3-phase motors can deliver higher power output compared to single-phase motors of similar size. The balanced three-phase power supply and the design of the motor allow for efficient utilization of electrical power, enabling the motor to provide greater mechanical power output.
  • Lower Maintenance: 3-phase motors generally require lower maintenance compared to other types of motors. The balanced three-phase power supply and the absence of starting components, such as capacitors or centrifugal switches, reduce wear and tear, resulting in longer motor life and reduced maintenance requirements.
  • Wide Availability and Standardization: 3-phase motors are widely available and standardized, making them easily accessible for various applications. They are manufactured in a wide range of sizes and power ratings, allowing for flexibility in selecting the appropriate motor for specific requirements.

Overall, the advantages of using a 3-phase motor include high efficiency, better power factor, high starting torque, smooth operation, compact size and weight, higher power output, lower maintenance requirements, and wide availability. These advantages make 3-phase motors suitable for a wide range of applications in industrial, commercial, and residential settings.

3 phase motor

What maintenance practices are essential for prolonging the lifespan of a 3-phase motor?

Proper maintenance is crucial for prolonging the lifespan and ensuring the reliable performance of a 3-phase motor. Here are some essential maintenance practices that should be followed:

  • Regular Cleaning: Keep the motor and its surrounding area clean and free from dust, dirt, and debris. Regularly inspect and clean the motor's exterior, ventilation openings, and cooling fins. This helps prevent the accumulation of contaminants that can interfere with the motor's cooling and ventilation, leading to overheating and reduced efficiency.
  • Lubrication: Follow the manufacturer's recommendations for lubrication intervals and use the specified lubricants. Proper lubrication of bearings, gears, and other moving parts reduces friction, minimizes wear and tear, and ensures smooth operation. Inspect and replenish lubricants as needed, taking care not to over-lubricate, which can cause excessive heat buildup.
  • Vibration Analysis: Monitor motor vibrations regularly using vibration analysis techniques. Excessive vibration can indicate misalignment, worn bearings, or other mechanical issues. By detecting and addressing vibration problems early on, potential failures can be prevented, and the motor's lifespan can be prolonged.
  • Electrical Inspections: Periodically inspect the motor's electrical connections, terminals, and wiring for signs of wear, loose connections, or overheating. Tighten any loose connections and address any abnormalities promptly. Electrical inspections help prevent electrical failures and ensure safe and efficient motor operation.
  • Temperature Monitoring: Monitor the motor's operating temperature using temperature sensors or thermal imaging. Abnormally high temperatures can indicate issues such as overload, insufficient cooling, or bearing problems. Regular temperature monitoring allows for timely identification of potential problems and the implementation of corrective measures.
  • Alignment and Balancing: Ensure the motor is properly aligned with the driven equipment, such as pumps or fans. Misalignment can cause excessive stress on the motor shaft and bearings, leading to premature failure. Additionally, balance any rotating components, such as fan blades or impellers, to reduce vibrations and strain on the motor.
  • Inspect and Replace Worn Parts: Regularly inspect the motor's components, such as belts, pulleys, brushes, and capacitors, for signs of wear, damage, or deterioration. Replace any worn or damaged parts promptly to prevent further damage to the motor and ensure optimal performance.
  • Preventive Maintenance Schedule: Establish a preventive maintenance schedule based on the manufacturer's recommendations and the motor's operating conditions. This schedule should include routine inspections, lubrication, cleaning, and testing. Adhering to a regular maintenance routine helps identify potential issues early on and allows for timely repair or replacement, thus extending the motor's lifespan.
  • Training and Documentation: Ensure that maintenance personnel are properly trained in motor maintenance procedures and safety protocols. Maintain detailed documentation of maintenance activities, including dates, observations, and performed tasks. This documentation provides a historical record of maintenance activities and facilitates troubleshooting and future maintenance efforts.
  • Environmental Considerations: Protect the motor from harsh environmental conditions, such as excessive heat, humidity, dust, or corrosive substances. If the motor is exposed to such conditions, consider implementing protective measures, such as enclosures, ventilation systems, or sealing, to safeguard the motor and prolong its lifespan.

By implementing these maintenance practices, motor owners can maximize the lifespan, reliability, and performance of their 3-phase motors. Regular inspections, cleaning, lubrication, and addressing any identified issues promptly are key to ensuring optimal motor operation and minimizing the risk of unexpected failures.

3 phase motor

How do 3-phase motors handle variations in load and speed requirements?

3-phase motors are capable of handling variations in load and speed requirements through various control methods. Here's a detailed explanation of how they handle these variations:

  • Load Variations:
    • Inherent Torque Characteristics: 3-phase motors are designed to provide high starting torque and continuous torque output, making them suitable for a wide range of load variations. They can handle sudden changes in load without significant impact on motor performance.
    • Overload Capacity: 3-phase motors are typically designed with overload capacity to handle temporary increases in load beyond their rated capacity. This overload capacity allows the motor to withstand sudden surges in load without overheating or tripping protective devices.
    • Controlled Speed Regulation: By using control devices such as variable frequency drives (VFDs) or adjustable speed drives (ASDs), the speed and torque output of 3-phase motors can be adjusted in real-time to match the load requirements. This ensures efficient motor operation and minimizes energy wastage.
    • Motor Protection Features: 3-phase motors often incorporate protective features such as thermal overload protection and current limiters. These features help safeguard the motor against excessive heat or current, which can result from prolonged high-load conditions. They automatically intervene to protect the motor and prevent damage.
  • Speed Variations:
    • Variable Frequency Drives (VFDs): 3-phase motors can be coupled with VFDs, which allow precise control of motor speed. VFDs adjust the frequency and voltage supplied to the motor, enabling smooth and accurate speed regulation over a wide range. This flexibility in speed control makes 3-phase motors suitable for applications with varying speed requirements.
    • Adjustable Speed Drives (ASDs): Similar to VFDs, ASDs provide speed control capabilities for 3-phase motors. They allow users to adjust the motor's speed and torque output based on specific application needs. ASDs can be used in various industrial processes that require precise speed control, such as conveyor systems, pumps, and fans.
    • Pole Changing Motors: Some 3-phase motors, known as pole changing motors, offer the ability to change the number of poles within the motor. This feature allows for speed variations by altering the motor's synchronous speed. However, pole changing motors are less common compared to VFD or ASD-controlled motors.

Overall, 3-phase motors can handle variations in load and speed requirements through their inherent torque characteristics, overload capacity, and control options such as VFDs and ASDs. These features and control methods allow for efficient motor operation, precise speed regulation, and the ability to adapt to changing load conditions in various industrial applications.

China best 3-Phase 380-440VAC 7.5kw 24000rpm High Speed Permanent Magnet Electric Motor   vacuum pump belt	China best 3-Phase 380-440VAC 7.5kw 24000rpm High Speed Permanent Magnet Electric Motor   vacuum pump belt
editor by CX 2023-11-17