Professional 3kv Motor Manufacturer in China

Longbank is a high-class manufacturing industry for 3kv motors. The installation of custom and advanced features in the device enhances the productivity and durability of the device.

  • Affordable and low in weight
  • Maximum productive rate and durable
  • Hard and resistive to decay
  • Anti-condensational heaters protect from moisture
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Custom 3kv Motors

Longbank manufactures a 3kv Motor that has substitute magnetic poles in the north-south configuration present in the device. The motor yields an output of 185kw to 3550kw with the mounting type of IMB3. Due to its peculiar features, it has been used expansively, such as in conveyors, fans, and cranes, at the industrial working for mining, turning, and drilling.

Longbank has been an exceptional constructional unit in China for a few years. Our remaining products other than 3kv are durable and give maximum efficiency rate. You can also add custom features to the device according to your choice. You provide the specific features, and we shall manufacture them according to your preference.

Longbank prepares the 1kv motor that rotates at the rate of 3000rpm when the frequency is 50Hz. 1kV motor is commonly used in pumps and drilling machines.

2kv motor rotates at 1450rpm at 50Hz and contains an E1 efficiency system. IP Protection technology enhances the security of the device.

4kv is asynchronous with the productivity of 4000w. Shows numerous ways of protection technology and is present in the form of 50Hz or 60Hz.

5kv motor produces the energy of 6.5kw to 1000kw, and ISO proved with the turning of 1500rpm at 50Hz and 1800rpm at 60Hz. Shows applications in the cranes.

6Kv motor is asynchronous that yields the power of 185KW to 2500KW at 50Hz. Three-phase machine with IEC verified. This motor is usually installed in heavy machines.

Longbank constructs the 7kv motor and produces the harvest of 5.5kw. Weighted at 98kg with the level rotation of 3600rpm. Applicable in crushers.

Why Choose Longbank 3kv Motors

Cooling and Ventilation
Cooling and Ventilation

Longbank manufactures 3kv Motors, which represents a high-efficiency rate. The device contains an exhausting fan that extracts the heat from the machine. As the machine works, it produces heat. This metabolic heat is released by fans that keep the temp of the body optimum and make its working smooth.

Quality Assurance
Quality Assurance

Longbank keeps the unrivaled quality of 3kv due to its robust features. Being an ISO-certified brand, it contains resistive lamination of iron that shields the device from environmental perils. These features also enhance its working span.

Optimal Features
Feature Optimization

Longbank’s products contain optimized features such as work in an environment-friendly, no sound pollution, portable, efficient working, and easy to accomplish. Our company also adds the convention features in product for our customers.

Insulation Class
Protective Insulation

Longbank laminates iron casting on a device that acts as a defensive shield and protects the device from decay. It also contains IP protection expertise with anti-condensational heaters that guard the motors against environmental fluxes.

What are the 3kv Motors

3kv Motor is a three-phase induction motor that yields energy of 185 to 3550kw. Asynchronous motor represents the IE1 efficiency with the protection technology of IP54. ISO-certified products apply to fans, mills, cranes, mixers, compressors, conveyors, and pumps.

The rotor preserves the device’s torque or rotation at an accurate rate. The resistive covering of the machine protects it from environmental effects. Anti-condensational heaters also safeguard it from stickiness.


Construction of 3kV Motor

Longbank offers several products which belong to multiple series, including YE2, YVFE2, YBX3, YE3, etc. Each series possesses several models with varying characteristics. The manufacturing of 3kV motors needs some specific elements. Minute disturbance in these components leads to an extreme reduction in the motor’s productivity. Some of these components are described here:

The Bearing System:

The bearing system of the 3kV motor is usually lubricated during its lifetime. However, it can be oiled once in its whole period. Regular oiling in intervals is better for its smooth functions. The bearings can be floating or confined. The primary role of these bearings is to keep a certain distance between the rotor and the stator.

Grease Life and Re-Greasing Interval:

Grease improves the lifetime of the motor by controlling the efficiency. Any variation in the motor’s lubricant will greatly affect the motor’s productivity. You can maintain the period of bearings by merely selecting the right lubricant.

External temperature, the operating conditions, the motor’s speed, the bearing’s size, and the weight of the load are some factors that can disturb the motor’s efficiency. More than the normal speed of the motor exerts radial and axial pressure, which decreases the motor’s yield.


When the armature rotates, the vibration is generated. The rotor contains several small sheets that induce magnetism after the current flow. Half-key dynamically stabilizes the rotors.

Anti-Condensation Heater:

Extremely hot weather can damage the stator’s windings. Anti-condensation heaters prevent the windings from any heat damage. Motor and this heater alternately perform their functions.

Rated Output:

Several factors impart their roles in calculating the motor’s productivity. The height above the sea level should not exceed 1000m. Similarly, the optimum temperature for the 3kV motor should be sustained between -15oC to 40oC. Adopting these conditions can help you in achieving the rated output of the 3kV motor.

Voltage and Frequency:

3kV motor has two subclasses which are IEC60034-1 verified. Both these classes have varying potential and frequency. The potential difference and frequency of class A fluctuate by the factor of ±5 % and ±2% respectively and ±10% and +3% / -5% (for class B). Class A motors are usually high-temperature motors.

Structure Features

3kV motor possesses numerous structural features which can vary by their model type. Some of its peculiar features are described herein briefly:

  • Single lubrication imparts the lifetime of 20,000 hours while it is boosted up to 40,000 hours by frequent lubrication.
  • If the temperature (CT) is increased by 10K, the bearing’s lifetime is one-halved.
  • Different models of 3000V motors have different power and speed ranges.
  • The potential difference is maintained at 3kV.
  • Cast iron imparts strength to the motor.
  • The structure of the radiator has a vertical-horizontal shape.
  • IP54 technology is present inside the motor.
  • Laminations protect the motor from several energy losses.
  • Permanent magnetism is because of the stator and rotor’s material.
  • Insulation of electromagnetic wire protects the motor’s component from any other damage.
  • VPI layer safeguards the electrical properties of the windings.
  • Ventilation improves the working temperature of the motor by introducing two separate mechanisms for expelling the heat.
  • Inner and outer fans help in reducing the motor’s temperature as well as ventilation noise.
  • 10 method help to detect the air gap between the stator and the rotor.
  • The optimum frequency must be 50-60Hz.
  • The efficient working of the motor is just because of particular sensors inside the motor.

Customized 3kv Motors supplier in China

Longbank is a reliable company for the invention of 3kv motors premeditated to the present age. Our company offers custom features for their products. This motor has wide applications in cranes, mixers, compressors, conveyors, fans, and washing machines.

Longbank has its analysis spot for checking the working of the machine. Such as testing the device’s endurance, hub motor, and automation. All products, especially 3kv Motor, are ISO confirmed and got many other accomplishments such as ROHS, GS, UL, TUV, CCC, CE, and many different values. All of these represent the quality of products.

3kV motor has become the need of life. Due to this many people are fixing these motors in their respective places. A few of its advantages are enlisted here:

  • Body material makes the 3kV motor quite durable.
  • 3kV motor is cost-effective.
  • 3kV motor can work under harsh operating conditions.
  • It produces minimum noise while working.
  • Longbank can design a 3kV motor according to your needs.
  • IP protection technology prevents the motor from several damaged.
  • The output of a 3kV motor depends upon numerous factors.

A brief description of 3kV motor’s applications is written here:

  • Several industries, including paper, cement, petrochemical, pharmaceutical, and electrical, are now replacing their old motors with 3kV to complete their assigned tasks efficiently.
  • Many agricultural areas are now furnished with these motors to fulfill their energy requirements.
  • You can fix them in high voltage wind turbines, air conditioners, and ships.
  • Heavy machines use such motors to optimize their outcomes.
  • 3kV motor finds its best application in drilling machines and many oil refineries.
  • Different mining technologies need such motors to accomplish their difficult tasks.

You can visit the main website of Longbank and get a quote for ordering the product. For orders, you must confirm specifications such as frame size, mounting type, type of motor, voltage, frequency, and power generated by the motor.

After confirmation of features, you must pay the amount by online payment method as mentioned on the website. The product will be released after the payment verification. If you notice any fault in the device, you can contact us.

One-Stop 3-Phase Squirrel Cage Induction Motor Solution in China
One-Stop 3kv Motor Solution in China

Since 1972, Longbank has been engineering the 3kv motor. The variety has many certifications such as UL, CE, TUVD, CCC, ROHS, and ISO9001-2008. Our company contains highly proficient and hardworking engineers and hires that manufacture the product according to the client’s prime.

  • “We have purchased the product of 3kv Motor from Longbank. It was my incredible experience with this device that gave the extreme output. Thanks a lot!”

  • “Longbank agreements the quality of the product. It enables its customers by maximum productive rate and quality assurance.”

  • “3kv Motor has an attractive physical appearance. The machine’s design is first-rate, from its initial part to its working. Its design converses with its functional property. Thanks a lot, Longbank.”

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