Professional 3.3kv Motor Manufacturer in China

Longbank has been manufacturing the 3.3kv motor since 1972. The installation of advanced and premium quality features in the device enhances its durability and applications.

  • High-efficiency rate and low cost of operation
  • High mechanical rigidity with low vibration during working
  • Presence of modulatory and adaptable features in the device
  • Standardized interface with optimized base frame
Get Our Best Quotation

Custom 3.3kv Motors

Longbank manufactures 3.3kv Motors that are asynchronous, standardized interface, and low in weight with modulatory features. The device rotates with the adjustable frequency according to the number of poles and required frequency. Its advanced features offer various applications in chemical industries, rolling mills, direct-driven conveyors, gearless drives for excavators, high-power mixers, mine hoists, and large pipeline pumps.

Longbank is a trustworthy company for the production of 3.3kv Motors. The machine’s working is suitable for all types of heavy pieces of machinery. Our professional engineers and workers can also manufacture customized products. The clients must provide bespoke specifications, and our team will manufacture the desired outcome.

Longbank manufactures the 6.3kv motor that is asynchronous and compact in structure. The speed of the machine is adjustable according to the poles and yields energy of 200 to 9000kW.

Our company manufactures a 6.6kv motor that is asynchronous and adjustable speed concerning poles and frequency and energy production of 200 to 9000kw. The protection technology of IP55 is present in the device.

10.5kv motor exists in the form of 4 to 6 poles. Speed is adjusted with the frequency and poles and the mounting of IM B3 with the output of 200 to 9000kw. Represents the cooling of IC 611.

Longbank manufactures the 11kv motor with the four poles and shows the protection technology of IP 55. The constructional design of IM B3 is present in the device. The speed of the machine varies with poles.

The rotational speed of the device varies with the poles, and frequency and weightage are adjustable according to the device’s details. Express the protection of IP 23 with the insulation class of H grade.

Longbank manufactures the asynchronous and compact body motor with a high voltage of 16.8kv speed of 200rpm to 500rpm. Expresses the chassis mounting type with the device’s installation of the standard diode.

Why Choose Longbank 3.3kv Motor

Cooling and Ventilation
Cooling and ventilation

All the long bank products, including the 3.3kv motor, have a unique mechanism for ventilation and cooling. The fan’s attachment inside the machine’s box expels the heat, thus keeping the device’s temperature at an optimum rate. This way improves the working proficiency and temp of the device. The ambient temp of the device varies from -15C to +40C.

Quality Assurance
Quality Assurance

Longbank manufactures products that contain the features of the best quality. All of the goods of this brand are ISO-certified and ensure quality. The motors have resistive body material and hard covering that protect them from oxidation or rusting. Then, the device works quickly and extraordinarily.

Optimal Features
Optimal features

3.3kv motor contains the most advanced and optimal features such as low weight, no noise pollution during working, and durability even in a harsh environment. All of these features prove the expertise in the device. Clients can also adjust their own interests’ custom features if needed. These features enhance the output of the device.

Insulation Class
Insulation Class

In the case of insulation, Longbank contains hard and resistive materials such as iron or copper. These components protect the device from environmental fluctuations and resistance to decay. The installation of anti-condensational heaters in the device also protects from moisture. IP technology of motors also enhances its defense.

What is the 3.3kv motor?

3.3kv device is the high voltage motor that has rotational speed according to the frequency and number of poles and generates power of 200 to 9000kw. The device contains the mounting type of IMB3 with the protection technology of IP54 and IP55. Four alternating magnetic poles in the device keep its exact working, and its cylindrical body makes the machine portable.

The 3.3kv motor contains the rotor that appropriately makes the device’s rotation. The device has many other optimal features such as no noise during working, modulatory features, steel welded structure, low weight, and ease of management. You can place it anywhere for maximum output.

Are high voltage motors more efficient for the same power

Construction of 3.3kV Motor

Longbank offers several categories of motors, including YXKK, Y, YKS, YKK, YPTKK, and YPTKS. All these series present multiple models that have varying specifications. But the primary components are approximately similar in all types of motors.

Each component is particular in its function that maintains the smooth functioning of the motor. Any commotion in the parts of the engine leads to a reduction in the overall productivity of the motor. A few of these components are described here briefly, and you can have a piece of knowledge about them at a glance.

The Frame

The frames of the machine are box-shaped, which aids in the easiness of installation and maintenance. Flexibility in structure for building and outlook can be customized according to the need of the client.


The stator of the device contains 99% pure copper, ensuring the device’s quality and efficiency. Better insulation system with five flows of processing. All the windings are fitted by handwork to confirm the not winding flow.


The rotor of the device contains the casting of aluminum with the core of silicon steel which ensures the quality of the device. Various devices also include the rotor of a copper bar. Well-defined shafts in the machine represent the excellent capacity and strength of the device.

The Bearing System

The primary component of the 3.3kV motor is its bearing system. This bearing can be confined or open-ended. Both of these bearings control the motor’s function. The significant role of these bearings is to adjust a particular distance between the rotor and the stator, along with supporting the loaded items.

Grease Life and Re-Greasing Interval

Grease controls the bearing’s lifetime. Variations in the composition and the type of the oil can dramatically reduce the motor’s functionality. Countless lubricants are used for greasing the engine. Regular lubrication expanded the lifetime twice that of a one-time lubricated 3.3kV motor.


When the armature rotates, the vibration is produced. The body of the armature contains metal sheets known as laminations that act as magnets after the passing of alternating current. Half-key stabilizes the armatures dynamically.

Anti-Condensation Heater

Increasing temperature over a specific limit can cause condensation of the motor’s windings, reducing the motor’s efficiency. This incident typically occurs in scorching summer weather. Longbank has installed anti-condensation heaters in its motors to eliminate this problem. These heaters are turned ON after the working of the motor.

Features of 3.3kV Motor

The features of the 3.3kV motor are highly specified. A few of its peculiar characteristics are elucidated here briefly:

  • The bearing’s lifetime in sealed motors is one-half of the re-greaseable motors.
  • The motor is asynchronous with a box-shaped structure.
  • The rotational speed of the device is adjustable according to the frequency and number of poles.
  • The device contains four magnetic poles.
  • The device yields energy of 200 to 9000kw.
  • The amount of torque production varies by 43kNm.
  • The casing of the machine contains the casting of iron.
  • The presence of anti-frictional bearings in the device enhances its operational period.
  • The cooling system of IC611 is present in the device.
  • A mounting type of IMB3 is present in the device.
  • The protection technology of IP54 and IP55 in the device enhances its protection.
  • The machine yields an output of up to 96% with a low cost of operation.
  • This brand has many certifications, such as ISO, CCC, ROHS, UL, CE, and TUDV.
  • Sealed motors possess 20,000 hours, while re-greaseable motors have 40,000 hours.
  • 10K increase in the motor’s temperature can reduce the bearing’s period to one-half.
  • The potential difference of the motor is 3.3kV.
  • 3.3kV motor possesses the vertical-horizontal structure of the radiator.
  • 3.3kV motor presents an exquisite style with good body strength.
  • The material of the stator and rotor act as a magnet after applying the alternating current.
  • The ventilation route is categorized into external and internal heat-removing pathways.
  • Inner heat is removed by the internal fan, while the external fan controls the external temperature and the motor’s vibration.
  • G1.0 method help in calculating the air space between the stator and the rotor.

Customized 3.3kv Motor supplier in China

Longbank is an advanced and professional company in China that supply its products to all major areas of the world, including Japan, Italy, the United States, France, Europe, and many other regions of Asia. All of these trusts the industry due to the best quality product delivery. We also offer product customization. Just share your desired features with us, and then we shall manufacture them according to the client’s choice.

For the checking of the operational performance of the device, Longbank has its experimental place that verifies the machine. At this place, we test the panels of automation, the machine’s endurance system, and the motor’s hub system. After confirming its performance, we market the product to the world.

The increasing demand for a 3.3kV motor is due to its multiple advantages. A few of its benefits are discussed below:

  • The motor’s material expands the motor’s lifetime by many times.
  • The price of a 3.3kV motor is affordable.
  • 3kV motor is available in several models with few variations in speed and power of anti-condensation heaters.
  • The motor can perform its function in harsh conditions at high speed.
  • The motor generates the slightest noise.
  • You can ask Longbank to manufacture a 3.3kV motor according to your requirements.
  • IP protection technology prevents the motor from corrosion.

Sensors inside the motor maintain the smooth functioning of the motor.

The 3.3kV motor is installed in several places to improve the yield of the motor. A few of its applications are enlisted here:

  • Several industries, including pharmaceutical, paper, petrochemical, cement, food, and electrical, are replacing their old motors with 3.3kV motors to improve efficiency.
  • Many heavy tools like cranes and drilling machines fit these motors.
  • Many agriculture areas are now furnished with 3.3kV motor.
  • Wind turbines use a 3.3kV motor to meet energy needs.

Different equipment of ships is run with these motors.

You can order the motors from the actual website of the industry. But before ordering, you must confirm specifications such as the frame size, voltage, frequency, motor output, mounting type, configuration, and protection technology. Besides these, you can also add your desired features to the device.

After confirmation, you need to fill out the form on the website and confirm the product’s payment. After the price, we shall deliver the product to the provided address. If you need to replace the product due to any fault, contact us via email at or call +86 153 1458 8251. For more information, you can contact us.

One-Stop 3-Phase Squirrel Cage Induction Motor Solution in China
One-Stop 3.3kv Motor Solution in China

Since 1972, Longbank has been manufacturing the 3.3kv. The ISO certification of the product and many others such as ROHS, UL, TUVD, CCC, CE, and ISO9001-2008 confirm the brand’s quality. These qualities ensure that we have a professional team of engineers and workers that give their maximum output.

  • “We have purchased the product of 3.3kv Motor from the Chiese company named Longbank. It was my fabulous experience with this device that gave the extraordinary output. Thanks a lot!”

  • “Longbank ensures the quality of the motor. It enables its customers by high conversion rate and quality assurance.”

  • “3.3kv Motor has a portable body structure. The machine’s design is top-rated, from its initial part to its working. Its design is according to its functional property. Thanks a lot, Longbank.”

Update cookies preferences
Scroll to Top