3-Phase Inverter Duty Motor 18.5kW 25Hp

The 3-Phase Inverter Duty Motor 18.5kW 25Hp is a top choice in the group of large-capacity industrial electric motors. Thanks to the application of inverter technology, the motor has the ability to adjust input frequency and voltage, helping to control rotation speed accurately according to requirements. This is an optimal solution for production systems and heavy-duty equipment that require continuous, stable, and energy-saving operation.

Overall design of the 3-Phase Inverter Duty Motor 18.5kW 25Hp

The Inverter Duty Motor is manufactured from a sturdy monolithic cast iron housing, capable of withstanding strong impacts and effectively reducing vibration during operation. The entire machine body is coated with high-grade electrostatic paint, helping to resist oxidation and protect the motor against the effects of dusty, humid environments or mild chemicals.

The rear part of the motor is installed with an independent forced cooling fan, allowing rapid cooling, ensuring the temperature remains stable even when operating under heavy loads for a long time or at low speeds.

Detailed structure of the 3-Phase Inverter Duty Motor 18.5kW 25Hp

The Inverter Duty Motor has the following detailed structure:

• Stator: Winding entirely made of copper, good electrical conductivity, limited heat loss, creating a stable magnetic field.
• Rotor: Assembled from multiple electrical steel sheets, increasing durability, ensuring smooth motor operation and high efficiency.
• Terminal box: Separately designed, including a main box for power connection and an auxiliary box for the forced cooling fan.
• Forced cooling fan: Creates a continuous strong airflow, maintaining effective heat dissipation capability.
• Inverter circuit: Helps convert alternating current into a variable-frequency voltage source, thereby flexibly adjusting rotation speed and torque.

Classification of the 3-Phase Inverter Duty Motor 18.5kW 25Hp

The 3-Phase Inverter Duty Motor 18.5kW 25Hp has diverse classifications as follows:

3-Phase Inverter Duty Motor 18.5kW 25Hp 2 poles (2800 – 3000 rpm)

Suitable for applications requiring high rotation speed and continuous operation. The inverter helps flexibly adjust speed, start smoothly, save energy, and enhance equipment lifespan.

Technical specifications

Code	160L
Shaft diameter	42mm
Key	12
Flange diameter	350mm
Dimensions	680mm * 314mm * 415mm
Mounting type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Water treatment and environmental industry: Used for high-pressure water pump systems, fire pumps, water supply pumps for high-rise buildings, or industrial pumping stations.
• Processing and ventilation sector: Operates large-capacity centrifugal fans, woodworking dust extraction fans, and mine ventilation systems.
• Machine manufacturing: Assembled into air blowers, screw air compressors, stone crushers, and various industrial cutting machines.

Inverter Duty Motor 18.5kW 25Hp 4 poles (1400 – 1500 rpm)

A suitable choice for many industrial applications requiring stable speed and flexible adjustment capability. Thanks to the integrated inverter, the motor helps with soft starting, smooth operation, reduced mechanical wear, and optimized energy costs during use.

Technical specifications

Code	180M
Shaft diameter	48mm
Key	14
Flange diameter	350mm
Dimensions	710mm * 355mm * 455mm
Mounting type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Water treatment & Aquaculture: Used in oxygen aeration pumps for ponds, shrimp/fish farming ponds, and water supply and drainage, flood control pumping systems.
• Heavy industrial production: Provides driving force for machinery systems in the steel industry, cement production, and mining.
• Extraction fan & Industrial pump systems: Installed in large cooling towers, mine or workshop ventilation systems.

3-Phase Inverter Duty Motor 18.5kW 25Hp 6 poles (900 – 1000 rpm)

Designed for systems requiring stable traction force at medium-low speeds. Inverter technology allows flexible speed adjustment according to operational requirements, helping to reduce power consumption, limit overload, and enhance equipment working efficiency.

Technical specifications

Code	200L
Shaft diameter	55mm
Key	16
Flange diameter	400mm
Dimensions	780mm * 395mm * 505mm
Mounting type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Water supply/drainage and environmental sector: Assembled for industrial fire pumps or generating rotational force for large dust extraction and ventilation centrifugal fans.
• Aquaculture: Used as aeration machines, creating oxygen for large-scale shrimp and fish farming ponds.
• Mining and material processing: Serves in sand crushers, coal mining, soil compactors, concrete mixers, or heavy-duty conveyor lines.

3-Phase Inverter Duty Motor 18.5kW 25Hp 8 poles (700 – 750 rpm)

Suitable for applications requiring low speed, high torque, and continuous working capability. When combined with an inverter, the motor helps control speed precisely, reduces shaking upon startup, and enhances durability for the transmission system.

Technical specifications

Code	200L
Shaft diameter	55mm
Key	18
Flange diameter	450mm
Dimensions	825mm * 425mm * 560mm
Mounting type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Agriculture – Forestry – Fishery sector: Operates large-capacity shrimp farming aerators, aquatic and livestock feed pellet pressing machines, and rice processing machines requiring strong traction force.
• Conveyor system & Crane: Optimized for heavy conveyors (ore, coal, building materials conveyors) thanks to large torque, helping machinery start smoothly without jolting.
• Pumping/fan load driving: Used for large water flow pump systems, industrial suction/blow fans for boiler cooling or dust collection.

Above are the common classifications of the 3-Phase Inverter Duty Motor 18.5kW 25Hp by number of poles today. To get advice on choosing the right model suitable for your usage needs and receive the latest quotation, please contact Thanh Thai Motor via hotline 0909.539.175.

What gearboxes can the 3-Phase Inverter Duty Motor 18.5kW 25Hp be combined with?

• Heavy duty gearbox: K-Series Helical Bevel Gearbox, S-Series Helical Worm Gearbox; F-Series Parallel Shaft Helical Gearbox; R-Series Inline Helical Gearbox

In addition, it can also be combined with:

• Coupling and pulley: 48mm

Instructions for wiring a 3-Phase Electric Motor

Step 1: Open the motor terminal box

• Use a suitable screwdriver to unscrew and open the 4 fixing screws on the motor terminal box cover (located on the back of the motor).
• Remove the cover to reveal the internal terminal block (domino).

Step 2: Proceed to wire the 3-phase power supply to the terminal block

• Prepare 3 power supply wires of the 3-Phase 380V current.
• On the motor terminal block, you will see copper terminals marked with symbols. Proceed to clamp (or screw) the 3 power wires respectively to the 3 contact terminals on the bottom row in order:
  • The first wire connects to the U1 terminal.
  • The second wire connects to the V1 terminal.
  • The third wire connects to the W1 terminal.
• Note: Tighten the connection points to ensure good electrical contact, avoiding sparking and heat generation during operation.

Step 3: Power supply and trial run

• After securely connecting the 3 power wires to the correct positions U1, V1, W1, check again to ensure safety.
• Turn on the power supply switch for the motor.
• Observe the shaft core to confirm that the motor has started and is rotating stably. If the motor operates smoothly, the wiring process is complete.

Through the electric motor video, viewers can visually observe the structure, operating principle, and practical operation capability of each motor line in various industrial applications. In addition, the summary video also shares images of the installation, wiring, and equipment testing process, helping customers easily choose products suitable for their usage needs and actual operating conditions.

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