Product Description
YE3 are the high-efficiency series developed by our company by combing many years of experiences in the production of special motors of our company and ZheJiang Electrical Apparatus Research Institute, and adopting new technologies, processes and materials, in line with the newest energy efficiency rate standards in IEC6-2012 and in accordance with “Test Determination for Rotating Motor’s Loss and Efficiency” in the second part of IEC60034-2 Rotating Motor. Adopting a squirrel-cage structure and insulation class F, the series has such advantages as reliable operation and maintenance convenience, whose mounting dimension and power level both meet standards of IEC.
Rated power:2.2~315KW
Rated voltage: 380V/415V/690V
Reference frequency: 50Hz/60HZ
Cooling mode: IC411
Insulation class: F
Protection class: IP54/IP55
Environment temperature: -15ºC~40ºC
Altitude: no more than 1,000m
Connection mode: Y-connection for the ones with a power of 3kW or below; △-connection for the ones with a power of 4kW or above
Basic structural form: B3, B5, B35, B14, B34
Nominal Minimum Energy Efficiency Requirement for Energy Efficiency of IE2/IE3 Motor (50Hz)
|
Power |
IE2 | IE3 | ||||
| Number of poles | ||||||
| 2 | 4 | 6 | 2 | 4 | 6 | |
| 0.75 | 77.4 | 79.6 | 75.9 | 80.7 | 82.5 | 78.9 |
| 1.1 | 79.6 | 81.4 | 78.1 | 82.7 | 84.1 | 81.0 |
| 1.5 | 81.3 | 82.8 | 79.8 | 84.2 | 85.3 | 82.5 |
| 2.2 | 83.2 | 84.3 | 81.8 | 85.9 | 86.7 | 84.3 |
| 3 | 84.6 | 85.5 | 83.3 | 87.1 | 87.7 | 85.6 |
| 4 | 85.8 | 86.6 | 84.6 | 88.1 | 88.6 | 86.8 |
| 5.5 | 87.0 | 87.7 | 86.0 | 89.2 | 89.6 | 88.0 |
| 7.5 | 88.1 | 88.7 | 87.2 | 90.1 | 90.4 | 89.1 |
| 11 | 89.4 | 89.8 | 88.7 | 91.2 | 91.4 | 90.3 |
| 15 | 90.3 | 90.6 | 89.7 | 91.9 | 92.1 | 91.2 |
| 18.5 | 90.9 | 91.2 | 90.4 | 92.4 | 92.6 | 91.7 |
| 22 | 91.3 | 91.6 | 90.9 | 92.7 | 93.0 | 92.2 |
| 30 | 92.0 | 92.3 | 91.7 | 93.3 | 93.6 | 92.9 |
| 37 | 92.5 | 92.7 | 92.2 | 93.7 | 93.9 | 93.3 |
| 45 | 92.9 | 93.1 | 92.7 | 94.0 | 94.2 | 93.7 |
| 55 | 93.2 | 93.5 | 93.1 | 94.3 | 94.6 | 94.1 |
| 75 | 93.8 | 94.0 | 93.7 | 94.7 | 95.0 | 94.6 |
| 90 | 94.1 | 94.2 | 94.0 | 95.0 | 95.2 | 94.9 |
| 110 | 94.3 | 94.5 | 94.3 | 95.2 | 95.4 | 95.1 |
| 132 | 94.6 | 94.7 | 94.6 | 95.4 | 95.6 | 95.4 |
| 160 | 94.8 | 94.9 | 94.8 | 95.6 | 95.8 | 95.6 |
| 200~375 | 95.0 | 95.1 | 95.0 | 95.8 | 96.0 | 95.8 |
Nominal Minimum Energy Efficiency Requirement for Energy Efficiency of IE2/IE3 Motor (60Hz)
| Power kW |
IE2 | IE3 | ||||
| Number of poles | ||||||
| 2 | 4 | 6 | 2 | 4 | 6 | |
| 0.75 | 75,5 * | 82,5 | 80,0 | 77,0 * | 85,5 | 82,5 |
| 1.1 | 82,5 | 84,0 | 85,5 | 84,0 | 86,5 | 87,5 |
| 1.5 | 84,0 | 84,0 | 86,5 | 85,5 | 86,5 | 88,5 |
| 2.2 | 85,5 | 87,5 | 87,5 | 86,5 | 89,5 | 89,5 |
| 3.7 | 87,5 | 87,5 | 87,5 | 88,5 | 89,5 | 89,5 |
| 5.5 | 88,5 | 89,5 | 89,5 | 89,5 | 91,7 | 91,0 |
| 7.5 | 89,5 | 89,5 | 89,5 | 90,2 | 91,7 | 91,0 |
| 11 | 90,2 | 91,0 | 90,2 | 91,0 | 92,4 | 91,7 |
| 15 | 90,2 | 91,0 | 90,2 | 91,0 | 93,0 | 91,7 |
| 18.5 | 91,0 | 92,4 | 91,7 | 91,7 | 93,6 | 93,0 |
| 22 | 91,0 | 92,4 | 91,7 | 91,7 | 93,6 | 93,0 |
| 30 | 91,7 | 93,0 | 93,0 | 92,4 | 94,1 | 94,1 |
| 37 | 92,4 | 93,0 | 93,0 | 93,0 | 94,5 | 94,1 |
| 45 | 93,0 | 93,6 | 93,6 | 93,6 | 95,0 | 94,5 |
| 55 | 93,0 | 94,1 | 93,6 | 93,6 | 95,4 | 94,5 |
| 75 | 93,6 | 94,5 | 94,1 | 94,1 | 95,4 | 95,0 |
| 90 | 94,5 | 94,5 | 94,1 | 95,0 | 95,4 | 95,0 |
| 110 | 94,5 | 95,0 | 95,0 | 95,0 | 95,8 | 95,8 |
| 150 | 95,0 | 95,0 | 95,0 | 95,4 | 96,2 | 95,8 |
| 185 up to 375 | 95,4 | 95,0 ** | 95,0 | 95,8 | 96,2 | 95,8 |
Advantages:
1. Novel design
2. Excellent starting performance
3. High starting torque
4. Low noise
5. Little vibration
6. Safe operation
7. Easy maintenance
Main process flow of the motor
Motor stator: casing processing → punching press → iron core seating → coil making → weaving → dipping paint drying
Electronic rotor: blank shaft processing → iron core press installation → iron core cast aluminum → rotor string shaft → weave → dipping paint drying → dynamic balance
Motor assembly: stator rotor assembly → machine test → motor appearance coloring → packaging storage
The motor products manufactured by our company have obtained the ISO9001 quality management management system certification, passed the CCC/COC, China energy-saving product certification, and passed the certification certificates of CE/UL/IRIS/CAS and other European and American countries. The company strictly improves the quality and efficient motor products and services for users in strict accordance with the requirements of relevant product standards.
The motor products manufactured and sold by our company are used in many industries, such as electric power, mining, steel metallurgy, petrochemical, water conservancy, transportation, building materials and many other industries. The equipment for the motor is pump, machine tool, fan, mill, crusher, rolling mill, compressor and many other industrial equipment.
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| Application: | Industrial |
|---|---|
| Operating Speed: | Constant Speed |
| Number of Stator: | Three-Phase |
| Species: | Ye3 |
| Rotor Structure: | Squirrel-Cage |
| Casing Protection: | Closed Type |
| Customization: |
Available
|
|
|---|
How do variable frequency drives (VFDs) impact the performance of AC motors?
Variable frequency drives (VFDs) have a significant impact on the performance of AC motors. A VFD, also known as a variable speed drive or adjustable frequency drive, is an electronic device that controls the speed and torque of an AC motor by varying the frequency and voltage of the power supplied to the motor. Let’s explore how VFDs impact AC motor performance:
- Speed Control: One of the primary benefits of using VFDs is the ability to control the speed of AC motors. By adjusting the frequency and voltage supplied to the motor, VFDs enable precise speed control over a wide range. This speed control capability allows for more efficient operation of the motor, as it can be operated at the optimal speed for the specific application. It also enables variable speed operation, where the motor speed can be adjusted based on the load requirements, resulting in energy savings and enhanced process control.
- Energy Efficiency: VFDs contribute to improved energy efficiency of AC motors. By controlling the motor speed based on the load demand, VFDs eliminate the energy wastage that occurs when motors run at full speed even when the load is light. The ability to match the motor speed to the required load reduces energy consumption and results in significant energy savings. In applications where the load varies widely, such as HVAC systems, pumps, and fans, VFDs can provide substantial energy efficiency improvements.
- Soft Start and Stop: VFDs offer soft start and stop capabilities for AC motors. Instead of abruptly starting or stopping the motor, which can cause mechanical stress and electrical disturbances, VFDs gradually ramp up or down the motor speed. This soft start and stop feature reduces mechanical wear and tear, extends the motor’s lifespan, and minimizes voltage dips or spikes in the electrical system. It also eliminates the need for additional mechanical devices, such as motor starters or brakes, improving overall system reliability and performance.
- Precision Control and Process Optimization: VFDs enable precise control over AC motor performance, allowing for optimized process control in various applications. The ability to adjust motor speed and torque with high accuracy enables fine-tuning of system parameters, such as flow rates, pressure, or temperature. This precision control enhances overall system performance, improves product quality, and can result in energy savings by eliminating inefficiencies or overcompensation.
- Motor Protection and Diagnostic Capabilities: VFDs provide advanced motor protection features and diagnostic capabilities. They can monitor motor operating conditions, such as temperature, current, and voltage, and detect abnormalities or faults in real-time. VFDs can then respond by adjusting motor parameters, issuing alerts, or triggering shutdowns to protect the motor from damage. These protection and diagnostic features help prevent motor failures, reduce downtime, and enable predictive maintenance, resulting in improved motor reliability and performance.
- Harmonics and Power Quality: VFDs can introduce harmonics into the electrical system due to the switching nature of their operation. Harmonics are undesirable voltage and current distortions that can impact power quality and cause issues in the electrical distribution network. However, modern VFDs often include built-in harmonic mitigation measures, such as line reactors or harmonic filters, to minimize harmonics and ensure compliance with power quality standards.
In summary, VFDs have a profound impact on the performance of AC motors. They enable speed control, enhance energy efficiency, provide soft start and stop capabilities, enable precision control and process optimization, offer motor protection and diagnostic features, and address power quality considerations. The use of VFDs in AC motor applications can lead to improved system performance, energy savings, increased reliability, and enhanced control over various industrial and commercial processes.
Are there energy-saving technologies or features available in modern AC motors?
Yes, modern AC motors often incorporate various energy-saving technologies and features designed to improve their efficiency and reduce power consumption. These advancements aim to minimize energy losses and optimize motor performance. Here are some energy-saving technologies and features commonly found in modern AC motors:
- High-Efficiency Designs: Modern AC motors are often designed with higher efficiency standards compared to older models. These motors are built using advanced materials and optimized designs to reduce energy losses, such as resistive losses in motor windings and mechanical losses due to friction and drag. High-efficiency motors can achieve energy savings by converting a higher percentage of electrical input power into useful mechanical work.
- Premium Efficiency Standards: International standards and regulations, such as the NEMA Premium® and IE (International Efficiency) classifications, define minimum energy efficiency requirements for AC motors. Premium efficiency motors meet or exceed these standards, offering improved efficiency compared to standard motors. These motors often incorporate design enhancements, such as improved core materials, reduced winding resistance, and optimized ventilation systems, to achieve higher efficiency levels.
- Variable Frequency Drives (VFDs): VFDs, also known as adjustable speed drives or inverters, are control devices that allow AC motors to operate at variable speeds by adjusting the frequency and voltage of the electrical power supplied to the motor. By matching the motor speed to the load requirements, VFDs can significantly reduce energy consumption. VFDs are particularly effective in applications where the motor operates at a partial load for extended periods, such as HVAC systems, pumps, and fans.
- Efficient Motor Control Algorithms: Modern motor control algorithms, implemented in motor drives or control systems, optimize motor operation for improved energy efficiency. These algorithms dynamically adjust motor parameters, such as voltage, frequency, and current, based on load conditions, thereby minimizing energy wastage. Advanced control techniques, such as sensorless vector control or field-oriented control, enhance motor performance and efficiency by precisely regulating the motor’s magnetic field.
- Improved Cooling and Ventilation: Effective cooling and ventilation are crucial for maintaining motor efficiency. Modern AC motors often feature enhanced cooling systems, including improved fan designs, better airflow management, and optimized ventilation paths. Efficient cooling helps prevent motor overheating and reduces losses due to heat dissipation. Some motors also incorporate thermal monitoring and protection mechanisms to avoid excessive temperatures and ensure optimal operating conditions.
- Bearings and Friction Reduction: Friction losses in bearings and mechanical components can consume significant amounts of energy in AC motors. Modern motors employ advanced bearing technologies, such as sealed or lubrication-free bearings, to reduce friction and minimize energy losses. Additionally, optimized rotor and stator designs, along with improved manufacturing techniques, help reduce mechanical losses and enhance motor efficiency.
- Power Factor Correction: Power factor is a measure of how effectively electrical power is being utilized. AC motors with poor power factor can contribute to increased reactive power consumption and lower overall power system efficiency. Power factor correction techniques, such as capacitor banks or power factor correction controllers, are often employed to improve power factor and minimize reactive power losses, resulting in more efficient motor operation.
By incorporating these energy-saving technologies and features, modern AC motors can achieve significant improvements in energy efficiency, leading to reduced power consumption and lower operating costs. When considering the use of AC motors, it is advisable to select models that meet or exceed recognized efficiency standards and consult manufacturers or experts to ensure the motor’s compatibility with specific applications and energy-saving requirements.
How does the speed control mechanism work in AC motors?
The speed control mechanism in AC motors varies depending on the type of motor. Here, we will discuss the speed control methods used in two common types of AC motors: induction motors and synchronous motors.
Speed Control in Induction Motors:
Induction motors are typically designed to operate at a constant speed determined by the frequency of the AC power supply and the number of motor poles. However, there are several methods for controlling the speed of induction motors:
- Varying the Frequency: By varying the frequency of the AC power supply, the speed of an induction motor can be adjusted. This method is known as variable frequency drive (VFD) control. VFDs convert the incoming AC power supply into a variable frequency and voltage output, allowing precise control of motor speed. This method is commonly used in industrial applications where speed control is crucial, such as conveyors, pumps, and fans.
- Changing the Number of Stator Poles: The speed of an induction motor is inversely proportional to the number of stator poles. By changing the connections of the stator windings or using a motor with a different pole configuration, the speed can be adjusted. However, this method is less commonly used and is typically employed in specialized applications.
- Adding External Resistance: In some cases, external resistance can be added to the rotor circuit of an induction motor to control its speed. This method, known as rotor resistance control, involves inserting resistors in series with the rotor windings. By varying the resistance, the rotor current and torque can be adjusted, resulting in speed control. However, this method is less efficient and is mainly used in specific applications where precise control is not required.
Speed Control in Synchronous Motors:
Synchronous motors offer more precise speed control compared to induction motors due to their inherent synchronous operation. The following methods are commonly used for speed control in synchronous motors:
- Adjusting the AC Power Frequency: Similar to induction motors, changing the frequency of the AC power supply can control the speed of synchronous motors. By adjusting the power frequency, the synchronous speed of the motor can be altered. This method is often used in applications where precise speed control is required, such as industrial machinery and processes.
- Using a Variable Frequency Drive: Variable frequency drives (VFDs) can also be used to control the speed of synchronous motors. By converting the incoming AC power supply into a variable frequency and voltage output, VFDs can adjust the motor speed with high accuracy and efficiency.
- DC Field Control: In some synchronous motors, the rotor field is supplied by a direct current (DC) source, allowing for precise control over the motor’s speed. By adjusting the DC field current, the magnetic field strength and speed of the motor can be controlled. This method is commonly used in applications that require fine-tuned speed control, such as industrial processes and high-performance machinery.
These methods provide different ways to control the speed of AC motors, allowing for flexibility and adaptability in various applications. The choice of speed control mechanism depends on factors such as the motor type, desired speed range, accuracy requirements, efficiency considerations, and cost constraints.
editor by CX 2024-05-16