Explosion-proof Motor 75kW 100Hp

The 75kW 100Hp explosion-proof motor plays an important role in converting electrical energy into mechanical energy, helping to optimize energy usage. With high safety features, this motor is widely applied in many industrial fields. Let’s learn more about this explosion-proof motor product with Thanh Thai Motor!

General Design of the Explosion-proof Motor 75kW 100Hp

Overall, the 75kW 100Hp explosion-proof motor usually has an eye-catching gray/blue color. The outer casing is made of sturdy cast iron material, thereby safely protecting the internal components.

In addition, because it is made of durable materials, it can withstand impacts well. Inside the electric motor, it has been upgraded by using larger wires, thus withstanding higher temperatures. Especially, the explosion-proof motor is capable of preventing explosions in the event of an electrical short circuit and meets explosion-proof requirements.

Internal Structure of the Explosion-proof Motor 75kW 100Hp

To handle the 75kW power capacity and operate safely in hazardous areas with flammable gases and dust, every internal component of the machine must meet international explosion-proof standards (Ex d):

• Stator: A massive magnetic field block pressed from low-loss technical steel sheets. The winding coils are made of ultra-large cross-section pure copper, treated with multi-layer vacuum insulating varnish impregnation (Class F or Class H) to withstand high temperatures and prevent voltage breakdown.
• Rotor: A robust one-piece cast squirrel cage block, with smooth machined surfaces and laser dynamic balancing to completely eliminate mechanical friction that generates sparks in the machine chamber.
• Bearings: Equipped with heavy-duty roller bearings or ball bearings from SKF, FAG. The bearing system integrates multi-layer sealing gaskets and explosion-proof heat-resistant grease to prevent dust and toxic gases from entering the shaft.
• Cooling system: The cooling fan blades must be made of special aluminum alloy material or anti-static plastic to eliminate the risk of electrostatic sparks generated by friction with the air or impact with the housing guard.

What Types of Explosion-proof Motors 75kW 100Hp Are Available?

The 75kW 100Hp explosion-proof motor product line is divided into 4 speed segments to accurately meet the drive characteristics of heavy industrial machinery in hazardous environments. Below are the standard technical specifications:

Explosion-proof Motor 75kW 100Hp 2 Poles (2,800 – 3,000 RPM)

It is a machine line that prioritizes generating extremely high rotational speed, specializing in systems that need to circulate huge volumes of liquids or gases in a short time.

Model	280S
Shaft diameter	65mm
Keyway	18mm
Flange diameter	550mm
Weight	560kg
Dimensions	1000 x 550 x 700 mm
Mounting type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Oil and gas pump systems: Drives ultra-large centrifugal pumps at oil transfer stations, national gas pipelines, or aviation fuel storage tanks.
• Mine ventilation: Operates maximum capacity centrifugal exhaust fans to discharge toxic gases and Methane (CH4) out of deep underground coal mines.
• Centrifugal air compressor systems: Drives high-speed centrifugal compressors serving reaction towers in chemical and fertilizer plants.

Explosion-proof Motor 75kW 100Hp 4 Poles (1,400 – 1,500 RPM)

It is a popular motor line in the large power segment, delivering a perfect balance between speed and torque, with very high durability.

Model	280S
Shaft diameter	75mm
Keyway	20mm
Flange diameter	550mm
Weight	620kg
Dimensions	1050 x 550 x 700 mm
Mounting type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Industrial compressed air: Runs giant screw air compressor stations supplying energy for entire defense equipment and chemical manufacturing workshops.
• Mining conveyors: Drives kilometers-long steel-reinforced rubber conveyor systems transporting coal and iron ore from mining areas to gathering ports.
• Sawdust and wood chip grinders: Applied in high dust explosion environments of wood pellet manufacturing plants with capacities of tens of tons per hour.

Explosion-proof Motor 75kW 100Hp 6 Poles (900 – 1,000 RPM)

Built with a significantly larger frame to accommodate more multi-pole copper wires, generating extremely immense torque, specialized for handling continuous heavy inertial loads.

Model	280S
Shaft diameter	75mm
Keyway	22mm
Flange diameter	550mm
Weight	620kg
Dimensions	1050 x 550 x 700 mm
Mounting type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Chemical tank agitation systems: Provides powerful kinetic energy to stir solvent reaction tanks, industrial paints, and thick chemical adhesives with capacities of tens of thousands of cubic meters.
• Bucket elevators and ore chain conveyors: Drives stone and ore lifting bucket systems in humid, flammable-gas-rich mines.
• Ball mills: Operates coal grinding drums and cement raw material grinding drums requiring continuous pulling force without rpm drop.

Explosion-proof Motor 75kW 100Hp 8 Poles (700 – 750 RPM)

Ultra-slow rotational speed, fully converting 75kW into maximum initial torque. The body size is the most massive among the speed segments.

Model	315M
Shaft diameter	75mm
Keyway	22mm
Flange diameter	550mm
Weight	1000kg
Dimensions	1300 x 650 x 850 mm
Mounting type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• High-safety winches and cranes: Applied for offshore drilling rig anchor winches, gantry cranes in weapons, explosives, or hazardous materials warehouses.
• Mechanical pressing and stamping machines: Drives scrap metal presses and rubber mold presses in chemical environments requiring slow rpm and ultra-high pressing force.
• Drying drums and rotary kilns: Operates chemical dryers and hazardous waste treatment rotary drums requiring extremely slow movement and absolute absence of electrical sparks.

Which Gearbox Does the Explosion-proof Motor 75kW 100Hp Combine With?

Pairing the 75kW explosion-proof motor with drive equipment requires extremely strict safety factor calculations to ensure the gearbox does not break under the pulling force of the 100Hp motor.

• Heavy duty gearbox (Large-scale R, K, F Series): This is the standard option. It typically uses giant gearbox codes such as R137, R147, R167 or K127, K157 fully immersed in oil to drive mine conveyors.
• Planetary gearbox: A perfect combination for explosion-proof lifting winches and hoists thanks to its ability to withstand ultra-high torque in a compact size.
• Drive couplings: It is mandatory to use hydraulic couplings or ATEX explosion-proof standard steel disc couplings for smooth startup, eliminating mechanical load shocks and preventing friction-induced sparks.

Guide on How to Wire the Explosion-proof Motor

For the practical process to be as safe and precise as possible, please refer to the detailed notes on each wiring operation summarized below:

Step 1: Check initial parameters:

At the beginning of the electric motor video, the instructor provides detailed information about the explosion-proof motor so viewers understand the technical specifications before starting.

Step 2: Remove the terminal box cover:

Use specialized tools to loosen the bolts and remove the terminal box cover (the cover with the characteristic red “EX” print).

Step 3: Identify the contact terminals:

After opening the cover, you will see copper wiring terminals exposed inside. You need to observe and accurately identify the 3 terminals marked U, V, and W to prepare for the power supply connection step.

Step 4: Proceed with wiring connections:

Use 3 power wires (illustrated in the video with crocodile clips having red, yellow, and blue core wires) to clip onto the 3 terminals U, V, and W identified in the previous step.

Step 5: Completion and further reference:

Complete the basic wiring process. To see more complex wiring methods or learn about other machine lines, you can search for technical guidance video compilations on Thanh Thai Motor’s channel.

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

With powerful, durable operation and high explosion-proof standards, the Explosion-proof Motor 75kW 100Hp is the ideal choice for heavy industrial systems requiring absolute safety and stable performance. The product not only helps ensure safety in harsh environments but also optimizes long-term operating costs.