3-Phase Electric Motor 75kW 100Hp

The 3-Phase Electric Motor 75kW 100Hp is a product line belonging to the large-capacity 3-phase electric motor segment above 3.7kW, designed for continuous machinery systems operating in heavy industrial environments. With powerful transmission capabilities, high durability, and stable performance, this product is an ideal choice for production lines, presses, industrial pumps, and large-capacity fans. This is an optimal solution to help improve operational efficiency and save long-term costs for businesses.

Overview design of the 3-Phase Electric Motor 75kW 100Hp

The 3-phase electric motor (3-phase electric motor) is built with a sturdy monolithic structure, ensuring stable and continuous operation in heavy industrial environments. The motor housing is usually made of cast iron or solid aluminum, with good load-bearing and corrosion-resistant capabilities. The rear of the motor is equipped with a cooling fan to help cool down quickly during operation. The motor shaft uses hard stainless steel material, suitable for harsh environments.

In addition, the motor also integrates a protective cover, a terminal box convenient for connection and installation, ensuring safety for users. This design meets strict requirements for durability, performance, and lifespan in large-capacity industrial applications.

Internal structure

The internal structure of the electric motor with a capacity of over 3.7kW includes two main parts:

• Stator: This is the stationary part of the motor, usually located on the outside and attached to the machine housing. Inside the stator, copper windings are scientifically arranged to generate alternating current, playing the role of providing the necessary magnetic field source when the motor starts and operates.
• Rotor: It is the rotating part located inside the stator, usually made of solid steel. The rotor rotates thanks to the interaction with the magnetic field generated by the stator, directly contributing to creating the output mechanical movement of the motor.
• Motor shaft: Directly connected to the rotor, responsible for transmitting torque from the motor to devices such as pulleys, couplings, gearboxes, or production machinery.
• Bearing: Has the function of supporting and positioning the motor shaft, helping the rotor rotate smoothly, reducing friction, and limiting vibration during operation.
• Cooling fan: Usually installed at the rear of the rotor, creating a continuous circulating airflow to dissipate heat for the motor, helping to maintain a stable working temperature.
• Terminal box: Where the electrical wires of the motor are gathered, used to connect the power source and change the star (Y) or delta (Δ) connection pattern according to usage requirements.
• Motor housing: Usually made of cast iron or cast aluminum, it protects internal components from dust, moisture, and mechanical impacts, while supporting effective heat dissipation.

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What types of 3-Phase Electric Motor 75kW 100Hp are available?

The 3-phase electric motor 75kW 100Hp 2-pole is a high rotational speed motor line. Thanks to its high-speed operation capability, the motor is suitable for applications requiring high flow rates, fast response, and continuous work in industrial environments.

3-Phase Electric Motor 75kW 100Hp 2-Pole (2800-3000 rpm)

This is the motor line with the highest rotational speed among electric motors of the same capacity, suitable for applications requiring high rpm, fast response capability, and high transmission efficiency.

Technical specifications

Code	280S
Shaft diameter	65mm
Key	18
Flange diameter	550mm
Weight	501kg
Dimensions	995mm * 550mm * 680mm
Mounting type	Foot-mounted (B3), Flange (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications

• Industrial centrifugal pumps, large-capacity water supply pumps: High rotational speed helps generate large water flow, meeting the demand for fluid transportation in factories, water supply and drainage systems, and pumping stations.
• Industrial fans, dust collection and ventilation fans: The 75kW 100Hp 2-pole motor provides a large rotational speed, suitable for large-scale ventilation, smoke extraction, and air handling systems.
• Industrial air compressors: Ensures continuous operation capability, providing a stable compressed air flow for production lines and industrial factories.

3-Phase Electric Motor 75kW 100Hp 4-Pole (1,400 – 1,500 rpm)

This is the most popular motor line (accounting for 70-80% of the market) because of its perfect balance between speed and pulling force, smooth operation, high mechanical durability, and less heat generation than the 2-pole line.

Technical specifications

Code	280S
Shaft diameter	75mm
Key	20
Flange diameter	550mm
Weight	517kg
Dimensions	995mm * 550mm * 680mm
Mounting type	Foot-mounted (B3), Flange (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Industrial conveyors: The speed of 1,400 – 1,500 rpm helps conveyors operate stably, minimizing vibration and ensuring high durability for the transmission system.
• Large-capacity air compressors: Provides stable torque, meeting continuous working requirements in production plants, mechanical workshops, and industrial zones.
• Industrial water pumps: Suitable for water supply and drainage systems, circulation pumps, and fire-fighting pumps thanks to durable operation and high efficiency.
• Industrial crushers, mixers, and agitators: The 4-pole motor creates good pulling force, helping equipment operate stably when handling heavy-load materials.

3-Phase Electric Motor 75kW 100Hp 6-Pole (900 – 1,000 rpm)

Thanks to its large torque and stable operation under heavy loads, the motor is especially suitable for applications requiring high pulling force, continuous operation, and limited vibration.

Technical specifications

Code	315S
Shaft diameter	80mm
Key	22
Flange diameter	550mm
Weight	795kg
Dimensions	1220mm * 635mm * 845mm
Mounting type	Foot-mounted (B3), Flange (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Stone crushers, material crushers: Large torque helps the motor start and operate stably under heavy loads, well meeting crushing applications in the mining and construction materials industry.
• Industrial mixers, agitators: Low speed combined with high pulling force helps equipment operate smoothly, maintaining uniform mixing efficiency for a long time.
• Heavy-duty conveyors: Suitable for heavy material transportation systems in cement plants, mining, steel production, and industrial processing.

3-Phase Electric Motor 75kW 100Hp 8-Pole (700 – 750 rpm)

Possessing a large torque, suitable for heavy-duty applications such as crushers, conveyors, mixers, and industrial lifting equipment.

Technical specifications

Code	315M
Shaft diameter	80mm
Key	22
Flange diameter	660mm
Dimensions	1300mm × 635mm × 845mm
Mounting type	Foot-mounted (B3), Flange (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Stone crushers, large-capacity ore crushers: High torque helps handle heavy and hard materials stably.
• Chemical agitators, large-capacity concrete mixers: Maintain strong pulling force when working with large loads.
• Heavy-duty conveyors in mining and cement industries: Ensure continuous and stable transportation capability.
• Lifting equipment, industrial winches: Provide large pulling force right from the start time.

What types of gearboxes can the 3-phase electric motor 75kW 100Hp combine with?

The 3-phase electric motor 75kW 100Hp can be coupled with various industrial gearbox lines to meet different speed and torque requirements, including:

• Worm gearbox: Large-sized WPA, WPS, WPX, WPO, WPDA, WPDS, WPDX, WPDO series.
• Industrial helical gearbox: Including R-Series Inline Helical Gearbox, S-Series Helical Worm Gearbox, and F-Series Parallel Shaft Helical Gearbox, commonly used in large-capacity conveyors, crushers, mixers, and production lines.

Besides the gearbox, the motor can also combine with many other transmission accessories such as:

• Pulleys and couplings: motor shaft from 75mm to 80mm.
• Brake: Industrial electromagnetic brake units can be added to support fast load stopping and increase operational safety.

Instructions for wiring a 3-phase electric motor

Technically correct wiring helps the motor operate stably, ensures electrical safety, and limits incidents such as short circuits or incorrect rotation direction. Below are the steps to wire the 3-phase 380V power supply for the motor.

Step 1: Open the motor terminal box

• Use a screwdriver to remove the fixing bolts on the terminal box cover.
• Lift off the terminal box cover to observe the internal wire ends.
• Check the position and symbols of the 6 wiring terminals.

Step 2: Identify the power terminals

• Observe the terminals arranged in two rows.
• Identify terminals U1, V1, and W1 as the power input locations.
• Check that the power supply used is a 3-phase 380V source.

Step 3: Wire the power supply

• Prepare 3 phase wires of the 380V power supply.
• Connect the wires respectively to terminals U1, V1, and W1.
• Tighten the cable lugs to ensure good electrical contact.
• Do not connect power to terminals U2, V2, and W2.

Step 4: Check operation

• Close the terminal box cover and tighten the fixing bolts.
• Supply power to test run the motor.
• Check the rotation direction of the motor shaft.
• If the motor rotates in the reverse direction of requirement, swap any 2 of the 3 phase wires and test run again.

Technically correct wiring not only helps the motor operate stably but also contributes to extending equipment lifespan and ensuring user safety. Through practical instructional videos, Thanh Thai Motor aims to support customers in mastering the installation and operation process of electric motor lines most effectively.

To learn more about products, quotations, as well as other detailed technical guides, customers can refer to Thanh Thai Motor’s comprehensive video library. Here, many electric motor videos are regularly updated with product introduction contents, installation, operation, and maintenance guides directly performed by the technical team.

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