China wholesaler Three-Phase Heat Pump Electric AC Fan Motor with 550W 8 Pole 380V vacuum pump engine

Product Description

The above mentioned specification is representative specification,can also be designed and manufactured according to customer requirements.


Reversible plug for easy rotation
Quick installation
Energy efficient
Quiet operation
Ball bearing
Automatic overload
Thermal protection
High efficiency, High reliability, Little vibration, Low noise

Suitable to air-cooled heat pump module units and similar applications.

Typical Outline Dimensions:

Main technical data:

Type Voltage Frequency Output Current Speed Insulation levels of protection 
V Hz W A r/min class
YS-250-6 380 50 250 0.95 940 F IP55
YS-250-8 380 50 250 1.20 720 F IP55
YS-370-6 380 50 370 1.30 940 F IP55
YS-370-8 380 50 370 1.50 720 F IP55
YS-550-6 380 50 550 1.80 940 F IP55
YS-550-8 380 50 550 2.10 720 F IP55
YS-750-6 380 50 750 2.30 940 F IP55
YS-750-8 380 50 750 2.50 720 F IP55
YS-1100-6 380 50 1100 3.10 950 F IP55
YS-1100-8 380 50 1100 3.30 720 F IP55
YS-1800-6 380 50 1800 4.50 940 F IP55
YS-2200-6 380 50 2200 5.50 950 F IP55

The above mentioned specification is representative specification,The specification can also be designed and manufactured 
according to customers requirement.
The products of 100-120V,200-240V,60Hz can also be supplied as requested.
We will not give special notice on changes,please contact our technical department for further information.

1. Trade Terms: FOB, CIF, CNF, EXW, DOOR TO DOOR.
2. Payment Terms: T/T, L/C, Western Union.
3. Payment Condition: 30% deposit in advance, 70% balance before delivery.
4. Delivery Time: 15-30 days after deposit (if T/T).
5. Shipping: By sea, by air and by express delivery

Company information:

1.HangZhou CHINAMFG Electric Co., Ltd. is located in Xihu (West Lake) Dis. Economic Development Zone, Xihu (West Lake) Dis. District, HangZhou City.

It is a professional motor manufacturing enterprise integrating design, production and sales. 

2.The company holds key technology and can design and make the special sizes and can customize according to special requirements.

3.The company’s main products are window-style, cabinet, split wall-mounted fan and other home-use air-conditioning motors;  

commercial air-conditioning motors; 

fan coil full range of motors;  

air energy units with motors; 


dryer with high temperature and pressure motors and Fan; 

Ceiling air conditioning card machine series motor;  

fresh air unit motor; 

duct blower motor;

air-cooled (water) heat pump module unit motor; 

high static pressure fan coil motor.

4.CARLYI branded motors have been approved by CCC, ISO9001, CE, RoHS certification.



Q1: Are you factory?

A: Yes, we have been in designing and providing excellent motors for customers. Our factory production is all under ISO9001 quality management system.


Q2: How long you could prepare samples?

A: Normally 3 days if we have the sample in hand. If customized one, about a week around


Q3: How about batch order production?

A: Normally 15-30 days, the customized or newly developed products may take more half month.


Q4: Do you inspect the finished products?

A: Yes, we do inspection according to ISO9001 standard and ruled by our experienced QC staff.


Q5: What advantage do you have?

A: For the motors, we have long enough of 18months guarantee, and for the service, we offer 24 hours technical support and barrier-free communication.


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Application: Suitable for Commercial Split Indoor Ceiling Sucti
Speed: 720-950 /Rpm
Number of Stator: Three-Phase
US$ 50/Piece
1 Piece(Min.Order)


Order Sample



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Shipping Cost:

Estimated freight per unit.

about shipping cost and estimated delivery time.
Payment Method:


Initial Payment

Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

electric motor

How does an electric motor ensure efficient energy conversion?

An electric motor ensures efficient energy conversion by employing various design features and principles that minimize energy losses and maximize the conversion of electrical energy into mechanical energy. Here’s a detailed explanation of how electric motors achieve efficient energy conversion:

  1. Efficient Motor Design: Electric motors are designed with careful consideration given to their construction and materials. High-quality magnetic materials, such as laminated iron cores and permanent magnets, are used to reduce magnetic losses and maximize magnetic field strength. Additionally, the motor’s windings are designed with low-resistance conductors to minimize electrical losses. By optimizing the motor’s design, manufacturers can improve its overall efficiency.
  2. Reducing Friction and Mechanical Losses: Electric motors are designed to minimize friction and mechanical losses. This is achieved through the use of high-quality bearings and lubrication systems that reduce friction between moving parts. By reducing friction, the motor can operate more efficiently, translating more of the input energy into useful mechanical work rather than dissipating it as heat.
  3. Efficient Control and Power Electronics: Electric motors employ advanced control techniques and power electronics to enhance energy conversion efficiency. Variable frequency drives (VFDs) are commonly used to control motor speed and torque, allowing the motor to operate at optimal efficiency levels under varying load conditions. Power electronics devices, such as insulated gate bipolar transistors (IGBTs) and MOSFETs, minimize switching losses and optimize power flow within the motor.
  4. Regenerative Braking and Energy Recovery: Some electric motors, particularly those used in hybrid electric vehicles (HEVs) and electric trains, incorporate regenerative braking systems. These systems convert the kinetic energy of the moving vehicle back into electrical energy, which can be stored and reused. By capturing and reusing energy that would otherwise be wasted as heat during braking, regenerative braking significantly improves overall energy efficiency.
  5. Efficient Cooling and Thermal Management: Electric motors generate heat during operation, and excessive heat can lead to energy losses and reduced efficiency. To mitigate this, motors are designed with efficient cooling systems such as fans, heat sinks, or liquid cooling methods. Proper thermal management ensures that the motor operates within the optimal temperature range, reducing losses and improving overall efficiency.
  6. High-Efficiency Standards and Regulations: Governments and organizations have established energy efficiency standards and regulations for electric motors. These standards encourage manufacturers to produce motors with higher efficiency ratings. Compliance with these standards ensures that motors meet certain efficiency criteria, resulting in improved energy conversion and reduced energy consumption.

By incorporating these design features, control techniques, and efficiency measures, electric motors achieve efficient energy conversion. They minimize energy losses due to factors such as resistance, friction, and heat dissipation, ensuring that a significant portion of the input electrical energy is converted into useful mechanical work. The continuous advancements in motor design, materials, and control technologies further contribute to improving the overall energy efficiency of electric motors.

electric motor

How do electric motors handle variations in voltage and frequency?

Electric motors are designed to handle variations in voltage and frequency to ensure proper operation and performance. The ability of electric motors to adapt to different voltage and frequency conditions depends on their design characteristics and the presence of additional control devices. Here’s a detailed explanation of how electric motors handle variations in voltage and frequency:

  1. Voltage Variations: Electric motors can handle certain variations in voltage without significant issues. The motor’s design factors in a voltage tolerance range to accommodate fluctuations in the power supply. However, excessive voltage variations beyond the motor’s tolerance can affect its performance and lead to problems such as overheating, increased energy consumption, and premature failure. To mitigate the impact of voltage variations, electric motors may incorporate the following features:
    • Voltage Regulation: Some electric motors, especially those used in industrial applications, may include voltage regulation mechanisms. These mechanisms help stabilize the motor’s voltage, compensating for slight voltage fluctuations and maintaining a relatively steady supply.
    • Voltage Protection Devices: Motor control circuits often incorporate protective devices such as voltage surge suppressors and voltage regulators. These devices help prevent voltage spikes and transient voltage variations from reaching the motor, safeguarding it against potential damage.
    • Voltage Monitoring: In certain applications, voltage monitoring systems may be employed to continuously monitor the motor’s supply voltage. If voltage variations exceed acceptable limits, the monitoring system can trigger alarms or take corrective actions, such as shutting down the motor to prevent damage.
  2. Frequency Variations: Electric motors are designed to operate at a specific frequency, typically 50 or 60 Hz, depending on the region. However, variations in the power system frequency can occur due to factors such as grid conditions or the use of frequency converters. Electric motors handle frequency variations in the following ways:
    • Constant Speed Motors: Most standard electric motors are designed for operation at a fixed speed corresponding to the rated frequency. When the frequency deviates from the rated value, the motor’s rotational speed changes proportionally. This can affect the motor’s performance, especially in applications where precise speed control is required.
    • Variable Frequency Drives (VFDs): Variable frequency drives are electronic devices that control the speed of an electric motor by varying the supplied frequency and voltage. VFDs allow electric motors to operate at different speeds and handle frequency variations effectively. By adjusting the frequency and voltage output, VFDs enable precise control of motor speed and torque, making them ideal for applications where speed control and energy efficiency are critical.
    • Inverter Duty Motors: Inverter duty motors are specifically designed to handle the frequency variations encountered when operated with VFDs. These motors feature improved insulation systems and robust designs to withstand the harmonic distortions and voltage spikes associated with VFD operation.
  3. Motor Protection: Electric motors may incorporate protective features to safeguard against adverse effects caused by voltage and frequency variations. These protection mechanisms include:
    • Thermal Protection: Motors often include built-in thermal protection devices such as thermal switches or sensors. These devices monitor the motor’s temperature and can automatically shut it down if it exceeds safe limits due to voltage or frequency variations that lead to excessive heating.
    • Overload Protection: Overload protection devices, such as overload relays, are employed to detect excessive currents drawn by the motor. If voltage or frequency variations cause the motor to draw abnormal currents, the overload protection device can interrupt the power supply to prevent damage.
    • Voltage/Frequency Monitoring: Advanced motor control systems may incorporate voltage and frequency monitoring capabilities. These systems continuously measure and analyze the motor’s supply voltage and frequency, providing real-time feedback on any deviations. If voltage or frequency variations exceed predetermined thresholds, the monitoring system can activate protective actions or trigger alarms for further investigation.

In summary, electric motors handle variations in voltage and frequency through design considerations, additional control devices, and protective mechanisms. Voltage variations are managed through voltage regulation, protective devices, and monitoring systems. Frequency variations can be accommodated by using variable frequency drives (VFDs) or employing inverter duty motors. Motor protection features, such as thermal protection and overload relays, help safeguard the motor against adverse effects caused by voltage and frequency variations. These measures ensure the reliable and efficient operation of electric motors under different voltage and frequency conditions.

electric motor

How do electric motors handle variations in load, speed, and torque?

Electric motors are designed to handle variations in load, speed, and torque through various control mechanisms and techniques. Here’s a detailed explanation of how electric motors handle these variations:

  1. Load Variations: Electric motors can handle variations in load by adjusting the amount of torque they produce. When the load on the motor increases, such as when additional resistance or weight is applied, the motor responds by increasing the torque output. This is achieved through the control of the motor’s input current or voltage. For example, in DC motors, increasing the current supplied to the motor can compensate for the increased load, ensuring that the motor can continue to operate at the desired speed.
  2. Speed Variations: Electric motors can handle variations in speed by adjusting the frequency of the power supply or by varying the voltage applied to the motor. In AC motors, the speed is determined by the frequency of the alternating current, so changing the frequency can alter the motor’s speed. In DC motors, the speed can be controlled by adjusting the voltage applied to the motor. This can be achieved using electronic speed controllers (ESCs) or by employing pulse width modulation (PWM) techniques to control the average voltage supplied to the motor.
  3. Torque Variations: Electric motors can handle variations in torque by adjusting the current flowing through the motor windings. The torque produced by a motor is directly proportional to the current flowing through the motor. By increasing or decreasing the current, the motor can adjust its torque output to match the requirements of the load. This can be accomplished through various control methods, such as using motor drives or controllers that regulate the current supplied to the motor based on the desired torque.
  4. Control Systems: Electric motors often incorporate control systems to handle variations in load, speed, and torque more precisely. These control systems can include feedback mechanisms, such as encoders or sensors, which provide information about the motor’s actual speed or position. The feedback signals are compared to the desired speed or position, and the control system adjusts the motor’s input parameters accordingly to maintain the desired performance. This closed-loop control allows electric motors to respond dynamically to changes in load, speed, and torque.

In summary, electric motors handle variations in load, speed, and torque through various control mechanisms. By adjusting the current, voltage, or frequency of the power supply, electric motors can accommodate changes in load and speed requirements. Additionally, control systems with feedback mechanisms enable precise regulation of motor performance, allowing the motor to respond dynamically to variations in load, speed, and torque. These control techniques ensure that electric motors can operate effectively across a range of operating conditions and adapt to the changing demands of the application.

China wholesaler Three-Phase Heat Pump Electric AC Fan Motor with 550W 8 Pole 380V   vacuum pump engine	China wholesaler Three-Phase Heat Pump Electric AC Fan Motor with 550W 8 Pole 380V   vacuum pump engine
editor by CX 2023-12-26

electric motor

As one of leading electric motor manufacturers, suppliers and exporters of products, We offer electric motor and many other products.

Please contact us for details.

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