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Product Description

Operating Conditions

   ANP series three-phase asynchronous motor is specially designed for Russia market, whose terminal box locates on the top of motor. The motor has a very compact structure and attractive appearance, the sizes and mounting dimensions are all in conformity with Gost standard GOST R 51689. Features:high efficiency, energy-saving, little noise, high starting torque, reasonable price, easy construction etc Application:drilling machines, pumps, fans, mixer, transport machines, food machines, agriculture machines and equipments, etc. Unsuited to be used in that place where combustible, explosive or corrosive gas exist and other special requirements forbidden.Equipped with re-greasing system when the frame size is 160MM and above.Can be equipped with PTC Labeling Standards Series Code V

Protection Class

IP54, IP55

Insulation Class


Mounting Methods

IM1081 IM2081 IM3081

Frame Size


Housing Material

Cast iron

Brand Bearing


Cooling Methods


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Application: Industrial
Speed: Low Speed
Number of Stator: Three-Phase
Function: Driving, Control
Casing Protection: Protection Type
Number of Poles: 4
US$ 350/Piece
1 Piece(Min.Order)




3 phase motor

What are the key components of a typical 3-phase motor?

A typical 3-phase motor consists of several key components that work together to convert electrical energy into mechanical energy. Here’s a detailed explanation of the key components of a typical 3-phase motor:

  • Stator: The stator is the stationary part of the motor and contains the core, windings, and other structural components. It consists of a laminated iron core with slots where the motor windings are placed. The stator windings are connected to the power supply and create a rotating magnetic field when energized.
  • Rotor: The rotor is the rotating part of the motor and is located inside the stator. It consists of a laminated iron core with conductive bars or coils embedded in it. The rotor is designed to rotate within the magnetic field generated by the stator windings. The interaction between the stator’s rotating magnetic field and the rotor’s conductive elements induces currents in the rotor, creating a torque that drives the rotation of the motor.
  • Windings: The windings are conductive coils of wire that are wound around the stator slots. In a 3-phase motor, there are typically three sets of windings, each spaced 120 degrees apart. These windings are designed to carry the three-phase alternating current (AC) from the power supply. The arrangement and connection of the windings create a rotating magnetic field in the motor, which interacts with the rotor to produce torque and rotation.
  • Power Supply Connections: The motor has terminals or leads for connecting it to the three-phase power supply. The power supply connections are typically labeled as L1, L2, and L3, corresponding to the three phases of the power supply. These connections provide the alternating current required to energize the stator windings and create the rotating magnetic field.
  • Bearings: Bearings are used to support the rotor and allow it to rotate smoothly within the stator. The motor typically has two bearings, one at each end of the rotor shaft. These bearings reduce friction and enable the efficient transfer of rotational motion from the rotor to the motor’s load.
  • Shaft: The shaft is a cylindrical component that extends from the rotor and serves as the mechanical link between the motor and the load. The shaft transfers the rotational motion generated by the motor to the connected equipment or machinery.
  • Housing or Frame: The motor is enclosed in a housing or frame that provides protection and support for the internal components. The housing is typically made of a durable material such as metal or plastic and is designed to withstand the operating conditions of the motor.
  • Cooling System: Many 3-phase motors incorporate a cooling system to dissipate heat generated during operation. This may include cooling fins on the motor housing, fan blades attached to the rotor shaft, or a separate cooling fan. Efficient cooling is essential to maintain optimal motor performance and prevent overheating.

These are the key components of a typical 3-phase motor. Each component plays a crucial role in the motor’s operation, from generating the rotating magnetic field to transferring mechanical energy to the load. Understanding these components is essential for troubleshooting, maintenance, and proper operation of 3-phase motors.

3 phase motor

What factors should be considered when selecting a 3-phase motor for an application?

When selecting a 3-phase motor for a specific application, several factors need to be considered to ensure optimal performance and compatibility. Here’s a detailed explanation of the key factors to consider:

  • Power Requirements: The power requirements of the application should be carefully evaluated. Determine the required horsepower (HP) or kilowatt (kW) rating of the motor based on the load characteristics, such as the torque and speed requirements. Consider both the continuous power requirements and any intermittent or peak power demands that the motor may experience during operation.
  • Voltage and Frequency: Verify the available voltage and frequency of the power supply in the application. Ensure that the motor’s voltage and frequency ratings match the power supply to ensure compatibility and safe operation. Common voltage ratings for 3-phase motors include 208V, 230V, 460V, and 575V, while frequencies are typically 50Hz or 60Hz.
  • Motor Speed: Determine the required speed of the motor for the application. Depending on the specific requirements, you may need a motor with a fixed speed, multiple speed options, or variable speed capabilities. Consider the motor’s synchronous speed, which is determined by the number of poles and the power supply frequency, and ensure it aligns with the desired operating speed.
  • Motor Enclosure: The motor enclosure should be selected based on the environmental conditions in which the motor will operate. Consider factors such as temperature, humidity, dust, corrosive substances, and the presence of flammable or explosive materials. Common motor enclosures include open drip-proof (ODP), totally enclosed fan-cooled (TEFC), and explosion-proof enclosures.
  • Efficiency: Energy efficiency is an important consideration to minimize operating costs and environmental impact. Look for motors that meet or exceed applicable efficiency standards, such as the NEMA Premium efficiency standards in the United States or the IE efficiency classes defined by the International Electrotechnical Commission (IEC).
  • Motor Size and Mounting: Consider the physical size and mounting requirements of the motor, ensuring it fits within the available space and can be securely mounted. Check the motor’s frame size, which indicates the physical dimensions and mounting compatibility, such as NEMA frame sizes in the United States or IEC frame sizes internationally.
  • Starting Method: Evaluate the starting requirements of the application. Depending on the load characteristics and the power supply capacity, you may need a motor with specific starting methods, such as direct-on-line (DOL) starting, reduced voltage starting (e.g., star-delta or autotransformer starting), or electronic soft starters. Consider the starting torque and current requirements to ensure successful motor startup.
  • Overload Protection: Determine the type of overload protection required for the motor. Overload protection devices, such as thermal overload relays or electronic motor protection relays, help prevent motor damage due to excessive heat or current overload. Select an appropriate overload protection device based on the motor’s power rating and the specific application requirements.
  • Reliability and Serviceability: Consider the reliability and serviceability aspects of the motor. Look for motors from reputable manufacturers with a track record of producing reliable products. Evaluate the availability of spare parts, technical support, and service centers for maintenance and repairs. Additionally, consider factors such as motor lifespan, bearing design, and ease of access for maintenance tasks.
  • Compliance and Certifications: Ensure that the selected motor complies with relevant industry standards and certifications, such as NEMA, IEC, UL (Underwriters Laboratories), CSA (Canadian Standards Association), or specific industry requirements. Compliance with these standards ensures that the motor meets safety, performance, and quality standards.

Considering these factors when selecting a 3-phase motor helps ensure that the motor is well-suited for the application, delivers optimal performance, and operates reliably and efficiently over its lifespan.

3 phase motor

How do 3-phase motors handle variations in voltage and frequency?

3-phase motors are designed to handle variations in voltage and frequency within certain limits. Here’s a detailed explanation of how they handle these variations:

  • Voltage Variations:
    • 3-phase motors are typically designed to operate within a specific voltage range. As long as the applied voltage remains within this range, the motor can function properly.
    • When the voltage supplied to a 3-phase motor varies, the motor’s performance may be affected. If the voltage drops significantly below the rated voltage, the motor may experience reduced torque and power output. Conversely, if the voltage exceeds the rated value, the motor may draw excessive current, leading to overheating and potential damage.
    • To handle voltage variations, 3-phase motors often incorporate protective devices such as thermal overload relays or motor protection circuits. These devices can detect abnormal operating conditions caused by voltage fluctuations and take appropriate actions, such as shutting down the motor or reducing its load.
  • Frequency Variations:
    • The speed of a 3-phase motor is directly proportional to the frequency of the power supply. When the frequency deviates from the rated value, the motor’s speed and performance can be affected.
    • If the frequency increases, the motor’s speed will also increase, resulting in higher torque and power output. Conversely, a decrease in frequency will lead to a decrease in speed, resulting in reduced torque and power output.
    • 3-phase motors can handle frequency variations up to a certain extent. However, if the frequency deviates too far from the rated value, the motor’s performance may become unstable or it may fail to start altogether.
    • For precise control over motor speed, variable frequency drives (VFDs) can be used. VFDs can adjust the frequency of the power supply to the motor, allowing for precise speed control and compensation for frequency variations.
  • Voltage and Frequency Tolerance:
    • International standards specify the acceptable voltage and frequency tolerances for 3-phase motors. These standards ensure that motors can operate reliably and safely within specified voltage and frequency ranges.
    • Motor manufacturers often provide voltage and frequency tolerance specifications for their products. These specifications indicate the allowable range of voltage and frequency variations that the motor can handle without compromising its performance or safety.
    • When selecting a 3-phase motor, it is important to consider the voltage and frequency requirements of the specific application and ensure that the motor’s voltage and frequency ratings align with the available power supply.

Overall, 3-phase motors are designed to handle variations in voltage and frequency within specified limits. They incorporate protective devices and can be paired with control devices such as VFDs to compensate for voltage and frequency fluctuations, ensuring optimal performance and protection against potential damage.

China Professional GOST Standard Anp Three Phase Motor 18.5kw Electric Motor Supplier   vacuum pump belt	China Professional GOST Standard Anp Three Phase Motor 18.5kw Electric Motor Supplier   vacuum pump belt
editor by CX 2024-04-17

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