Product Description

     Xihu (West Lake) Dis. Xihu (West Lake) Dis.i Motor Co.,Ltd which was founded in 1969, is national appointed as chief factory for small and medium-size motor by machinery ministry. It has 50 years history of producing electric Motor.In November 2 square meter’s workshop,8200 square meter’s technology Research building, 23 assembly lines and 2300 sets of producing Machines, and motor testing center (10000KW).The main electric motors for technical research are high-efficiency motor with energy saving, VFD motor, large-size motor and special motor. The company has 1200 staff and workers in total, there are 130 engineers who work on scientific, technical research and test development, Which build “ZheJiang technical center”, “ZheJiang Electrical Engineering Center “. The company passes ISO9001:2008, ISO14001:2004, GB/T28001. 
     Main products: high-efficiency motor (YE3 80-355, YE2 56-355), High-efficiency high voltage motor (YX/YXKK/YXKS series H355-800),compact high voltage motor (YX2 H355-560), VFD motor (YVF2 series H80-450),high voltage VFD motor, low voltage rotor motor (YR series H315-355),YR/YRKK high voltage rotor motor, high-efficiency explosion-proof motor (YB3 series H80-355),TDMK series large-size synchronous motor (specified for mine mill), high voltage explosion-proof motor (YB2 H355-560), Y2 series low voltage big power motor, permanent magnet synchronous motor, YE4 series super premium efficiency motor, special motor for car and other special motors for customers. YE3,JHM,YVF2, YE2 series motors pass “CCC” certificates; YE2, YE3 series high-efficiency motors get “CE” certificates; YE3 premium efficiency motor, CXYT permanent magnet synchronous motor, S18/25 get National energy-saving certificates.

    In year 2016, the company achieved sales revenue RMB 1.52 billion Yuan, incoming tax RMB 60 million yuan, net profit RMB 10.171 million yuan, and top 3 comprehensive strength in field of small-medium electric motors in China.

YE4 series super efficiency 3 phase asynchronous motors(H80~355mm)

General Introductions:

YE4 series motors is suitable for almost all applications, and could be used to drive all kinds of general purpose machines such as: compressors, ventilators, pumps, etc. And can also be used in the hazardous areas with oil and chemical, steel plants. Mining industry.

Advantages of this series motor: Improved structure, attractive appearance, high starting torque, high efficiency, low noise, high international protection class and insulation class, improved cooling capabilities.


Work Conditions:

Rated voltage 380V, 660V, 380/660V, 660/1140V
Output power 0.55KW~315KW
Poles 2~12
Protection Class IP54/IP55
Insulation Class F/H temperature rise B
Altitude Not exceed 1000m meters
Rated frequency 50HZ
Duty Continuous(S1)
Ambiemt temperature  -15°C~+40°C

The above is The Default Parameters, If you have any other special requirements, you can contact us for Customization.


Q: Are you a factory or trading company?
A: HangZhou XIHU (WEST LAKE) DIS.I is a factory that has been focusing on motors and accessories for more than 50 years.

Q: What about the warranty?
A: We offer 12 month warranty period as the quality guarantee.

Q: Can you do OEM?
A: Yes , we offer OEM.

Q: How about your service?
A: We have pre-sale service, in-sale service and after-sale service.What we pursue is long-term cooperation,
so our principle is customer first.

Q: What are your terms of delivery?
A: Generally we ship in FOB term, but we couldoffer the solution for CNF, CIF and DDP, which all based on your

Q: What’s the delivery time?
A: 10 to 30 days after receiving your payment in advance. /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Application: Industrial
Speed: Constant Speed
Number of Stator: Three-Phase
Function: Driving, Control
Casing Protection: Open Type
Number of Poles: 4


induction motor

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.

induction motor

How do AC motors contribute to the functioning of household appliances?

AC motors play a crucial role in the functioning of numerous household appliances by converting electrical energy into mechanical energy. These motors are used in a wide range of devices, powering various components and performing essential tasks. Let’s explore how AC motors contribute to the functioning of household appliances:

  • Kitchen Appliances: AC motors are found in various kitchen appliances, such as refrigerators, freezers, dishwashers, and blenders. In refrigerators and freezers, AC motors drive the compressor, which circulates the refrigerant and maintains the desired temperature. Dishwashers use AC motors to power the water pumps, spray arms, and the motorized detergent dispenser. Blenders utilize AC motors to rotate the blades and blend ingredients.
  • Laundry Appliances: AC motors are integral to laundry appliances like washing machines and clothes dryers. Washing machines rely on AC motors to power the agitator or the drum, facilitating the washing and spinning cycles. Clothes dryers use AC motors to rotate the drum and operate the blower fan, facilitating the drying process.
  • Vacuum Cleaners: Vacuum cleaners utilize AC motors to generate suction and drive the motorized brush or beater bar. These motors power the fan or impeller, creating the necessary airflow for effective cleaning.
  • Fans and Air Circulation: AC motors are employed in various types of fans, including ceiling fans, table fans, and pedestal fans. These motors drive the fan blades, producing airflow and facilitating air circulation to provide cooling or ventilation in rooms. Additionally, AC motors power exhaust fans used in kitchens, bathrooms, and range hoods to remove odors, smoke, or excess moisture.
  • Air Conditioning and Heating Systems: AC motors are critical components in air conditioning and heating systems. They power the compressor, condenser fan, and blower fan, which are responsible for circulating refrigerant, dissipating heat, and delivering conditioned air throughout the house. AC motors enable the regulation of temperature and humidity levels, ensuring comfort in residential spaces.
  • Garage Door Openers: AC motors are utilized in garage door openers to drive the mechanism responsible for opening and closing the garage door. These motors generate the necessary torque to lift or lower the door smoothly and efficiently.
  • Other Appliances: AC motors are also found in a variety of other household appliances. For instance, they power pumps in water heaters, swimming pool filters, and sump pumps. AC motors are used in dehumidifiers, humidifiers, and air purifiers to drive the fans and other internal components. They are also present in audiovisual equipment, such as DVD players, record players, and fans used for cooling electronics.

In summary, AC motors are essential components in household appliances, enabling their proper functioning and delivering the mechanical energy required for various tasks. From kitchen appliances to laundry machines, fans, air conditioning systems, and more, AC motors provide the necessary power and functionality to enhance our daily lives.

induction motor

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:

  1. 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.
  2. 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.
  3. 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:

  1. 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.
  2. 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.
  3. 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.

China manufacturer Ye4 Series Super Efficiency Three Phase AC Asynchronous Electric Motor for Air Blower   with Best Sales China manufacturer Ye4 Series Super Efficiency Three Phase AC Asynchronous Electric Motor for Air Blower   with Best Sales
editor by CX 2024-05-14