3-Phase Electric Motor 315kW 420Hp

The 3-Phase Electric Motor 315kW 420Hp is a high-capacity motor line, designed to meet the demands of powerful and continuous operation in heavy industrial systems. With high torque, large load capacity, and stable performance, this 3-phase electric motor product is an ideal choice for modern production lines, high-power drive systems, or mining equipment. This is the optimal solution for businesses needing to ensure efficiency and durability during use.

General design of the 3-Phase Electric Motor 315kW 420Hp

The 3-phase electric motor 315kW 420Hp is designed with a durable structure, suitable for harsh industrial working environments. The motor housing is made of sturdy cast iron, helping to protect internal components well and increase heat dissipation capability. The motor is wound with 100% pure copper wire, ensuring good electrical conductivity, reducing energy loss, and increasing equipment lifespan.

The product has a foot-mounted or flange-mounted design depending on installation requirements, easily integrated with modern drive systems. The large size, weight, and configuration are standardized according to IEC standards, making replacement and maintenance convenient. In addition, the motor integrates a rear cooling fan to help maintain a stable temperature when operating continuously under heavy loads.

Internal structure of the motor

The internal structure of the 3-Phase Electric Motor 315kW 420Hp belonging to the 3-phase electric motor segment above 3.7kW includes the following components:

• Stator: It is the stationary part, playing the role of creating a rotating magnetic field through a system of copper-wound coils. When energized, the stator generates a magnetic field, enabling the motor to operate.
• Rotor: Located inside the stator, the rotor is the moving part of the motor, constructed from thin steel laminations layered and pressed tightly into a cylinder. The rotor reacts with the magnetic field from the stator to create rotational movement.
• Rotor core: Also made of electrical steel laminations, slotted on the outer surface. This core is pressed tightly and fixed on the rotating shaft of the motor.
• Rotor bars: Instead of copper windings, aluminum or copper bars are cast directly into the slots of the steel core.
• Motor shaft: Made of high-strength steel, it is where torque is transmitted externally to load machinery (pumps, industrial fans, conveyors…).
• Bearings: Supporting the motor shaft at both ends, helping the rotor rotate smoothly with minimal friction. The 315kW motor requires high-load and high-speed bearings.

Classification of the 3-Phase Electric Motor 315kW 420Hp

To meet diverse industrial usage needs, we will classify 3-phase electric motors based on various criteria such as installation type, rotational speed, voltage, and dimensions.

3-Phase 315kW 420Hp 2-Pole Electric Motor (2800 – 3000 rpm)

Possessing a very high rotational speed, it effectively meets large-scale industrial systems requiring strong power and continuous operation capability.

Technical specifications

Code	355L
Shaft diameter	75mm
Key	20
Locating rim diameter	800mm
Dimensions	1550mm * 730mm * 1010mm
Installation type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• High-pressure pump systems: Water supply for high-rise buildings, fire-fighting pumps, boiler circulation pumps, or large-scale municipal water supply pump stations.
• High-capacity industrial fans: Acting as boiler blowers, dust/exhaust suction fans for metallurgical plants, cement plants, or heavy industrial exhaust fans.
• Mining and construction industry: Operating rock crusher systems, ore grinders, pile driving machines, and building material production lines requiring strong rotational force.

3-Phase 315kW 420Hp 4-Pole Electric Motor (1400 – 1500 rpm)

A popular choice for heavy industrial systems thanks to its good balance between rotational speed, torque, and continuous operating performance.

Technical specifications

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

Applications:

• Mining and building materials industry: Operating stone crushing stations, ball mills, large-scale conveyors carrying coal or ore in mines.
• Environmental and water treatment industry: Driving high-capacity water pump systems (urban water supply or irrigation) and high-power air blowers for aquaculture or wastewater treatment.
• Processing industry: Powering large-scale screw air compressor systems, hydraulic presses, or industrial boiler exhaust/blower fan systems.

3-Phase 315kW 420Hp 6-Pole Electric Motor (900 – 1,000 rpm)

Designed for heavy-duty applications requiring large torque, high load capacity, and stable continuous operation in harsh industrial environments.

Technical specifications

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

Applications:

• Mining and metallurgy industry: Specialized in driving coal/stone conveyor systems kilometers long, jaw crushers, ball mills, and high-capacity steel rolling machines.
• Building materials & cement industry: Operating primary rock crushers, large concrete mixers (at mixing plants), and soil compaction and material shaping presses.
• Industrial pump and fan systems: Used for irrigation water pump stations, water supply and drainage pumps for high-rise buildings, or ventilation suction/blower systems in tunnels and mines.

Choosing the right power and installation type will help the motor operate stably, save energy, and enhance equipment lifespan. If you are looking for a suitable solution for pump systems, industrial fans, or heavy-duty production lines, please contact hotline 0909.539.175 for prompt and accurate consultation from Thanh Thai Motor.

What gearboxes can the 3-Phase Electric Motor 315kW 420Hp be combined with?

The 3-Phase Electric Motor 315kW 420Hp can be combined with a gearbox to form a high-capacity gear motor, suitable for applications requiring high torque and slow rotational speed.

• Heavy-duty gearbox: F-Series Parallel Shaft Helical Gearbox

In addition, it can also be combined with:

• 95mm shaft pulley
• 95mm shaft coupling

Guide to connecting a 3-phase electric motor

Step 1: Open the terminal box cover

• Use a Phillips screwdriver to loosen and remove the 4 screws at the 4 corners of the terminal box cover (located on top of the motor body). After removing, you will see 6 terminal posts waiting inside, divided into 2 rows and pre-connected by linking bridge bars (here the motor is pre-connected in a Star or Delta diagram depending on the line, the video keeps this bridge configuration).

Step 2: Identify wire connection positions

• Carefully observe the symbols embossed or printed on the terminal board. The lower terminal row (or the outgoing wire end side) will have 3 connection posts labeled from left to right as: U1 – V1 – W1.

Step 3: Connect the 3-phase power supply

• Use pliers or hands to secure the 3 wire ends of the 3-phase power supply $380text{ V}$ (in the video, cables with Yellow, Red, Black cable clamp ends are used for testing).
• Clamp/fasten the first wire to terminal U1.
• Clamp/fasten the second wire to terminal V1.
• Clamp/fasten the third wire to terminal W1.
• Note: The color order of the power wires connected to U1, V1, W1 only determines the forward or reverse rotation direction of the motor. If after testing the motor rotates in the opposite direction you want, simply swap the positions of any 2 of these 3 power wires.

Step 4: Power up and test run

• Ensure the terminal clips are well insulated, avoiding short circuits to the motor housing or each other.
• Turn on the circuit breaker to supply power: The motor shaft (the yellow plastic-covered part at the shaft end) starts to rotate evenly, smoothly, and without strange squealing noises.

If customers need to learn more about the 3-Phase Electric Motor 315kW 420Hp or other high-capacity industrial motor lines, please contact Thanh Thai Motor for detailed technical consultation. In addition, customers can access the video summary category to refer to many practical products or watch electric motor videos with full information on structure, dimensions, wiring methods, and operating applications, helping to choose the right equipment suitable for usage needs and receive a quick quotation.

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