3-Phase Inverter Duty Motor 15kW 20Hp

The 3-Phase Inverter Duty Motor 15kW 20Hp is an electric motor integrated with a variable frequency drive capable of changing frequency and input current, thereby controlling rotational speed flexibly according to actual requirements. With high capacity, stable performance, and energy-saving capabilities, this inverter duty motor is especially suitable for heavy-duty systems that require high precision and continuous operation time.

Overall Design of the 3-Phase Inverter Duty Motor 15kW 20Hp

The inverter duty motor is manufactured on an advanced production line, using a sturdy one-piece cast iron housing that helps reduce vibration and provides excellent load-bearing capacity. The exterior is coated with a durable electrostatic paint, preventing rust and effectively withstanding environments with heavy dust, high humidity, or mechanical impacts.

One of the highlights is the independent forced cooling fan mounted at the rear of the motor, ensuring rapid cooling and maintaining a stable temperature. As a result, the motor can operate for extended periods under heavy loads while maintaining consistent performance.

Detailed Structure of the Inverter Duty Motor

The 3-Phase Inverter Duty Motor 15kW 20Hp has the following detailed structure:

• Stator (Stationary part): Pure copper winding provides good electrical conductivity, creates a strong magnetic field, and reduces thermal losses.
• Rotor (Rotating part): Constructed from tightly assembled electrical steel laminations, ensuring stable operation and increasing motor lifespan.
• Terminal box: Designed with spacious room for technicians to easily crimp cable lugs for large-diameter power cables.
• High-capacity forced cooling fan: Provides continuous cooling airflow, ensuring the motor does not overheat during prolonged operation.
• Inverter circuit: Converts alternating current into variable-frequency voltage, helping to accurately control speed and torque.

How is the 3-Phase Inverter Duty Motor 15kW 20Hp Classified?

The 3-Phase Inverter Duty Motor 15kW 20Hp is divided into 4 speed ranges based on the number of magnetic poles as follows:

3-Phase Inverter Duty Motor 15kW 20Hp 2-Pole (2,800 – 3,000 rpm)

Featuring extremely fast shaft rotational speed and the variable frequency drive’s frequency fine-tuning capability, this 2-pole motor series is designed to optimize output flow and pressure.

Technical Specifications

Code	160M
Shaft Diameter	42 mm
Keyway	12 mm
Spigot Diameter	250 mm
Flange Diameter	350 mm
Frequency	5 ~ 50Hz
Dimensions	615mm * 320mm * 420mm
Mounting Type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection Class	IP55
Insulation Class	Class F

Applications:

• Driving the screw mechanism of air compressors.
• Providing kinetic energy for horizontal centrifugal pump stations and high-pressure boiler feed water pumps.
• Operating cooling towers, industrial air blowers, and woodworking factory dust collection systems.
• Installed in large circular saw machines and wood chippers requiring fast and decisive rotation.

3-Phase Inverter Duty Motor 15kW 20Hp 4-Pole (1,400 – 1,500 rpm)

The 4-pole 3-phase motor is the perfect harmonization between rotational speed and torque specifications, widely applied in all automated production fields.

Technical Specifications

Code	160L
Shaft Diameter	42 mm
Keyway	12 mm
Spigot Diameter	250 mm
Flange Diameter	350 mm
Frequency	5 ~ 50Hz
Dimensions	670mm * 320mm * 420mm
Mounting Type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection Class	IP55
Insulation Class	Class F

Applications:

• Used for conveyors, screw conveyors, heavy material mixing systems, and stone crushers.
• Primary drive for plastic extruders, injection molding machines, and PE film blowing lines.
• Driving ore sorting conveyor systems and coal conveyors in thermal power plants.
• Operating large-capacity flour mixers and industrial-scale animal feed grinders.

3-Phase Inverter Duty Motor 15kW 20Hp 6-Pole (900 – 1,000 rpm)

The 6-pole motor series generates an extremely strong load-holding force (torque), helping equipment overcome machinery mechanisms with high inertia.

Technical Specifications

Code	180L
Shaft Diameter	48 mm
Keyway	14 mm
Spigot Diameter	250 mm
Flange Diameter	350 mm
Frequency	5 ~ 50Hz
Dimensions	740mm * 355mm * 455mm
Mounting Type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection Class	IP55
Insulation Class	Class F

Applications:

• Assembling ground winches and heavy-duty double-girder cranes in steel yards.
• Building material production machines, textile lines, heavy-duty elevators, or medical face mask machines.
• Driving thick chemical mixing tanks, rubber kneaders, and industrial glue mixers.
• Operating jaw crushers and scrap waste shredders subject to continuous impacts.

3-Phase Inverter Duty Motor 15kW 20Hp 8-Pole (700 – 750 rpm)

The 8-pole configuration with a massive shaft (55mm) generates maximum torque at ultra-low speeds. The product helps engineers streamline mechanical transmission systems, bypassing complex intermediate reduction stages.

Technical Specifications

Code	200L
Shaft Diameter	55 mm
Keyway	16 mm
Spigot Diameter	300 mm
Flange Diameter	400 mm
Frequency	5 ~ 50Hz
Dimensions	770mm * 395mm * 505mm
Mounting Type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection Class	IP55
Insulation Class	Class F

Applications:

• Directly driving sludge scrapers and aerobic tank agitators in wastewater treatment plants.
• Used for heavy freight elevators, winches, and seaport cranes. The variable frequency drive helps control speed accurately, stopping/parking smoothly and safely between floors.
• Operating steel rolling mills, sheet metal press brakes, and super-heavy hydraulic presses.
• Installed on seaport cranes and container lifting equipment requiring absolute static lifting capacity.

What Gearbox Can the 3-Phase Inverter Duty Motor 15kW 20Hp Be Combined With?

The 20 horsepower inverter duty motor can be combined with various gearboxes such as:

• K-Series Helical Bevel Gearbox, R-Series Inline Helical Gearbox, F-Series Parallel Shaft Helical Gearbox, S-Series Helical Worm Gearbox
• Cycloidal Gearbox (Codes XLD, BLD)
• Worm gearbox: WPS, WPA, WPO, WPX, WPDS, WPDA, WPDO, WPDX series with size 250 and NMRV 150 gearbox.

In addition, specific accessory lines that can be combined with the product include:

• Shaft coupling: Shaft 42mm, 48mm, 55mm
• Brake: Various power ratings of 11kW, 15kW, 18.5kW, 22kW
• Variable Frequency Drive

Guide to Safe and Technically Standard 3-Phase Electric Motor Wiring

The wiring procedure for a large 15kW motor must strictly comply with industrial electrical safety standards. Incorrect pole wiring or missing grounding wires can cause damage to the variable frequency drive and system-wide explosion or fire hazards.

• Remove terminal box cover: Use a screwdriver to remove the 4 positioning screws on the terminal box (located on top of the motor) to open the area containing the electrical contact terminals.
• Route and secure 380V cables: Distribute the 3 cables of the 380V power source directly into the 3 metal terminals marked U1, V1, and W1 by the manufacturer. Use pliers or specialized tools to tighten the nuts securely to ensure transmission safety.
• Test operation: Switch on the 380V power supply to the circuit and observe the rotation of the shaft. If the shaft rotates smoothly and at a stable speed, the installation process has been successful.

Note: The principle of supplying alternating current power to the U1, V1, W1 terminal system according to the above procedure is foundational knowledge. Technicians can flexibly apply this skill to the assembly and maintenance of other electromechanical systems such as industrial water pumps, 1-Phase electric motors, or gear motors.

The 3-Phase Inverter Duty Motor 15kW 20Hp, with superior design specifications and durable pulling force, is a reliable equipment choice for heavy-duty industrial lines. The exclusive forced cooling system allows the motor to operate comfortably at low speed ranges without worrying about magnetic thermal overload issues. To visualize the grandeur and installation methods of the system in practice, partners are invited to watch the in-depth technical video summaries or visit the electric motor video repository on Thanh Thai Motor’s website.

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