3-Phase Electric Motor 250kW 340Hp

The 3-Phase Electric Motor 250kW 340Hp is a high-power motor line, specialized for industrial machinery systems that require powerful drive and durable operation. With the ability to generate high torque, this motor helps optimize working efficiency, save operating costs, and well meet continuous operation needs in modern production environments. Let’s explore this product in detail with Thanh Thai Motor!

General design of the 3-Phase Electric Motor 250kW 340Hp

The 3-phase electric motor is designed with a sturdy structure, suitable for heavy industrial operations. The outer housing of the electric motor is usually made of high-pressure cast iron, helping to increase durability and heat dissipation capacity. The fan is located at the back to cool the entire motor body, ensuring the motor operates stably for a long time. In addition, the device is also equipped with a fan cover (sampo) to increase operational safety.

The motor shaft is machined from solid stainless steel, highly corrosion-resistant, suitable for use in harsh environments. The motor uses entirely copper windings, helping to increase working efficiency and durability for the windings. High-quality bearing and ball bearing systems help the motor operate smoothly, minimizing vibration and noise.

Internal structure of the motor

Regarding the internal structure, the 3-phase electric motor 250kW 340Hp belongs to the 3-phase electric motor segment above 3.7kW and includes the following main parts:

• Stator (stationary part): This is the part installed outside, playing a fixed role, usually coated with blue or industrial gray paint. Inside the stator is a system of coils arranged scientifically, operating thanks to alternating current to create a magnetic field and provide energy for the operation process.
• Rotor (rotating part): Placed in the center, the rotor can rotate flexibly within the magnetic field generated by the stator. This part is constituted by many thin technical steel sheets pressed tightly into a cylindrical block, helping to reduce power loss and ensure mechanical durability during continuous operation.
• Bearings (Ball bearings): Using heavy-duty industrial ball bearings, designed with grease groove and high-quality grease seal system to prevent leakage.
• Motor shaft: Made of high-strength steel, ensuring the ability to withstand heavy loads and large torsional forces with a large shaft diameter.
• Cooling system (Fan & Heat sink fins): At large capacities like 250kW, the motor often integrates a coaxial cooling fan at the rear of the motor or uses an independent cooling fan system to continuously force wind, combined with an outer housing featuring many heat dissipation ribs.

Classification of the 3-Phase Electric Motor 250kW 340Hp

The 3-Phase Electric Motor 250kW 340Hp is classified based on various criteria to meet diverse usage needs in industry and production.

3-Phase Motor 250kW 340Hp 2 Poles (2800 – 3000 rpm)

Designed for applications requiring high rotational speed, large capacity, and stable operation in heavy-duty industrial environments.

Technical specifications

Code	355M
Shaft diameter	75mm
Key	20
Flange diameter	800mm
Dimensions	1550mm * 730mm * 1010mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• High-pressure water pump: Provides strong thrust for urban water supply pumping stations, fire pumps, irrigation pumps, or high-pressure pumps in mining.
• Large-scale industrial fan systems: Operates suction/exhaust centrifugal fans in thermal power plant boilers, steelmaking furnace fans, or mine ventilation fans.
• Air compressors & Air blowers: Provides suitable capacity and rotational speed for large-capacity compressed air systems, wastewater treatment, or industrial aquaculture systems.

3-Phase Motor 250kW 340Hp 4 Poles (1400 – 1500 rpm)

Delivers a balance between rotational speed and torque, suitable for large-scale industrial systems requiring continuous and stable operation.

Technical specifications

Code	355M
Shaft diameter	95mm
Key	25
Flange diameter	800mm
Dimensions	1530mm * 730mm * 1010mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Ventilation and cooling systems: Runs exhaust fans, large-capacity industrial centrifugal fans for mines, workshops, or cooling tower systems.
• Mineral and material processing: Pulls large conveyors, stone crushers, sand screening machines, and cement grinding systems.
• Heavy industrial manufacturing: Operates hydraulic presses, large screw air compressors, industrial agitators, and ice-making machines.

3-Phase Motor 250kW 340Hp 6 Poles (900 – 1000 rpm)

Has a lower rotational speed but generates high torque, suitable for heavy-duty applications requiring strong traction and high stability.

Technical specifications

Code	355L
Shaft diameter	95mm
Key	25
Flange diameter	800mm
Dimensions	1530mm * 730mm * 1010mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Large-flow industrial pumps: Serves large-scale water supply and drainage pumping stations, agricultural irrigation pumps, or fire protection pumps.
• Mining & Construction: Operates stone crushing systems, ore crushers, large conveyors, and concrete mixing stations requiring continuous heavy-duty working capability.
• Aquaculture industry: Often used to pull oxygen paddlewheel systems and large industrial pond aeration machines.

Choosing the right 250kW 340HP motor not only helps equipment operate efficiently but also increases the lifespan of the entire system. Call 0909.539.175 now for quick consultation and support from Thanh Thai Motor in choosing the most suitable model.

Which gearbox can the 3-Phase Electric Motor 250kW 340Hp be combined with?

In addition, a gearbox can be combined with the 3-Phase Electric Motor 250kW 340Hp to form a high-power gear motor, helping to increase torque and reduce speed suitable for systems requiring high traction force.

• Heavy duty gearbox: K-Series Helical Bevel Gearbox; S-Series Helical Worm Gearbox

In addition, it can also be combined with:

• 95mm shaft pulley
• 95mm shaft coupling

Instructions for wiring the 3-phase electric motor

Step 1: Open the terminal box cover

• Use a screwdriver to unscrew and remove the 4 positioning screws on the terminal box cover of the motor.

Step 2: Identify terminals and power cords

• The motor has clearly marked terminals: U1, V1, W1.
• Prepare 3 power cords of the 3-phase electrical system ($380text{ V}$).

Step 3: Wire connection

Proceed to connect the 3 power cords one by one to the 3 connection terminals at the bottom of the terminal box:

• The first power cord connects to terminal U1.
• The second power cord connects to terminal V1.
• The third power cord connects to terminal W1.

To better understand the 3-Phase Electric Motor 250kW 340Hp as well as other industrial drive solutions, please contact Thanh Thai Motor for dedicated support from our technical team. In addition, the electric motor video category will help you practically observe the structure, dimensions, and operational capacity of the product. Do not forget to check out the comprehensive video to explore more high-power motor lines, serving diverse production and operation needs in industry.

Warranty, shipping and commitment policy at Thanh Thai Motor

Warranty up to 24 months

All electric motor products distributed by Thanh Thai Motor are covered by a genuine warranty for up to 24 months. Customers who purchase electric motors can completely rest assured with a transparent, fast, and professional after-sales policy.

Nationwide Shipping

Thanh Thai Motor supports nationwide shipping for all electric motors sold, ensuring safe and on-time delivery to every province across the country. Whether you are in the North, Central, or South, we are ready to serve you.

European Standard Quality – German Technology

Thanh Thai Motor sells electric motors manufactured with German technology, meeting European quality standards, ensuring durability, high efficiency, and stable operation for a long period – suitable for the strict requirements of industrial electric motors.

Competitive Prices – Attractive Offers for Dealers and Wholesale Customers

We commit to reasonable motor prices, offering the best electric motor products with high discount policies for bulk purchasers and distribution units. The more you buy – the better the profit.

Quality Commitment – Powerful Operation, Power Saving

Thanh Thai Motor sells electric motors wound with 100% copper wire, helping the machine run powerfully, consume less electricity, operate smoothly, and effectively reduce vibration – extending equipment lifespan. When purchasing an electric motor, prioritizing products with 100% copper core will be a wise decision, bringing long-term value.

At Thanh Thai Motor, we provide a full range of products, with various phases and capacities, such as:

• 220V electric motors (or 220V 1-Phase electric motors) are 1-Phase electric motors commonly chosen for many household appliances and light industrial equipment, offering convenience and efficiency.
• 380V electric motors are 3-Phase electric motors using three-phase power, commonly used in heavy industrial applications.

Full CO, CQ Certification Documents

Thanh Thai Motor provides the best quality electric motors. Each imported electric motor product from Thanh Thai Motor comes with a Certificate of Origin (CO) and a Certificate of Quality (CQ), meeting the requirements for large projects, constructions, and strict technical documentation.

Contact for Purchase

Do you need to buy an electric motor or seek advice on choosing an affordable electric motor that suits your needs? Contact Thanh Thai Motor immediately using the methods below:

• WhatsApp: +84966596219
• Email: codienthanhthai@gmail.com