composite explosion-proof high voltage synchronous motor
High Voltage Capability: Suitable for heavy-duty industrial applications requiring high power output.
Precision Synchronization: Maintains constant speed with high operational stability.
Robust & Reliable: Engineered for long service life under extreme working conditions.
Industrial Applications: Widely used in oil & gas, chemical plants, and power generation sectors.
- Product Description
Composite Explosion-Proof High Voltage Synchronous Motor
When your industrial facility demands uncompromising safety and efficiency, our composite explosion-proof high voltage synchronous motor delivers proven performance. These motors are made by Tellhow Shenyang Electric Machine Co., Ltd. and have protection grades from IP55 to IP66, insulation classes F or H with VPI treatment, and cooling systems IC411 and IC611. Our motors can handle loads from 200 kW to 30,000 kW and have shaft heights between 355 mm and 1250 mm. They use 15-20% less energy while keeping their speeds in sync. These motors are made in a 190,000 m² factory that can make 8 million kW of power every year and has CE, ATEX, and IECEx approvals. They are used in important ways in the oil and gas, chemicals, and power generation industries.
What Makes Our Motors Different
Composite Protection Structure
We care most about your safety. Multiple safety features are built into the hybrid design, which is a single motor. Flameproof technology (Ex d) is used in the main case, and extra safety steps are taken in the output box (Ex e). When compared to single-method designs, this smart mix offers better safety.
It's like adding extra layers of security to your most important tasks.
Superior Power Factor Correction
Synchronous motors are better for your building's general power factor than standard induction motors. This means that the cost of power will go down straight. When you buy a car, you're not just getting something; you're putting in long-term cost saves.
This smart choice will show up on your energy bills.
Built for Extreme Conditions
Working in situations that are tough? Our motors take care of it. Even when it's very hot or very cold (-50°C versions are offered), these tools keep working. The clever "breathing" technology keeps condensation from building up inside. Anti-corrosion finishes keep metals safe from strong chemicals and the weather abroad.
You can always count on steady results, no matter what.

Technical Specifications
| Parameter | Specification |
|---|---|
| Power Range | 200 kW - 30,000 kW |
| Voltage Class | High voltage (3.3 kV - 11 kV) |
| Shaft Height | 355 mm - 1250 mm |
| Protection Grade | IP55 / IP66 |
| Insulation Class | F or H (VPI treated) |
| Cooling Method | IC411 / IC611 |
| Efficiency Rating | IE3 / IE4 |
| Explosion Protection | Ex d (flameproof) + Ex e (increased safety) |
| Temperature Range | -50°C to +40°C (with customization) |
| Compliance Standards | IEC 60079, ATEX, IECEx, CE, UL |
Key Performance Features
Precision Engineering
Every composite explosion-proof high voltage synchronous motor undergoes rigorous quality control. Tight limits for dimensions are made possible by high-precision manufacturing methods. This accuracy means that the machine will run smoothly and the bearings will last longer.
Intelligent Monitoring Capability
Smart equipment is needed in modern factories. Our motors allow for tracking of conditions in multiple dimensions. You can keep an eye on real-time factors like temperature, shaking, and function. Early warning tools help keep downtime from happening out of the blue.
Fast Torque Response
When you need to make quick changes to your process, our motors act right away. Because it is simultaneous, the system delivers power quickly without losing steadiness.
Low Noise Operation
Business-like doesn't have to be loud. Our small structure design keeps operating noise levels to a minimum. The quieter place will be good for your employees.
Why Choose Tellhow Shenyang
Manufacturing Excellence
We run one of the most modern factories in Asia that makes cars. Our listed capital is 500 million RMB. There are more than 2,100 parameters for our 49 product lines. This isn't just a range of options; these are solutions that are perfectly matched to your wants.
Customization Flexibility
Standard specs don't work for your job? Not a problem. We offer a wide range of ODM and OEM services. Power output, speed settings, insulation classes, and structure designs can all be changed to fit your needs. We can make something that fits your needs, whether you need a single sample or a lot of them.
Global Certification Portfolio
This motor has approvals from CE, UL, VDE, SASO, SNI, PSE, KC, and CCC. Because our motors have been approved for so many things, you can use them in a lot of different regulatory areas without worrying about compliance.
Lifecycle Support
We will still work with you after arrival. Our world service network offers expert help, engineering advice, and spare parts delivery in different areas. We're dedicated to making sure your motor works for as long as it does.

Industry Applications
Oil & Gas Sector
In exploration, refining, and distribution, explosion protection is non-negotiable. Our product solutions meet the strictest Zone 1 and Zone 2 requirements. The robust construction withstands the corrosive environments typical of offshore platforms and refinery operations.
Chemical Processing
Chemical plants face unique challenges: corrosive atmospheres, temperature extremes, and explosive gas mixtures. Our motors are engineered specifically for these demanding conditions. The VPI insulation treatment provides exceptional resistance to chemical exposure.
Power Generation
Whether you're running turbines or auxiliary systems, reliable motor performance is critical. Our synchronous motors offer the precise speed control and high efficiency that power generation facilities demand.
Mining Operations
Underground mining presents perhaps the most challenging motor environment. Dust, moisture, methane gas, and mechanical stress all threaten equipment reliability. Our motors are proven performers in these harsh conditions.

Making the Investment Decision
Choosing the right motor affects your facility's safety, efficiency, and profitability for years to come. Our composite explosion-proof high voltage synchronous motor represents proven technology backed by comprehensive support.
You're not just purchasing equipment. You're partnering with a manufacturer committed to your operational success.
Consider the total cost of ownership: initial price, energy consumption, maintenance requirements, and expected lifespan. Our motors consistently deliver lower TCO than alternatives. The 15-20% energy reduction alone creates substantial savings over the motor's 20+ year operational life.
Frequently Asked Questions
Q:Why choose a product over an induction motor?
A:Synchronous motors offer superior efficiency and the ability to improve your facility's overall power factor. This is critical for reducing electricity costs in high-voltage industrial plants. The energy savings typically offset the higher initial investment within 18-24 months of operation.
Q:What does 'composite' specifically mean in the protection context?
A:It means the motor uses different protection methods for different parts. For example, the main enclosure might be Ex d (flameproof) while the terminal box is Ex e (increased safety). This tailored approach provides optimal protection for each component.
Q:How often does the explosion-proof path need inspection?
A:According to IEC 60079-17, a detailed inspection should occur every 3 years. However, we recommend visual checks annually. This preventive approach catches potential issues before they become critical failures.
Q:Can these motors operate in extreme cold?
A:Absolutely. Specialized versions are rated for -50°C using integrated space heaters and low-temperature synthetic lubricants. We've supplied motors operating successfully in Siberian facilities and Arctic installations.
Q:What is the typical lead time for a custom motor?
A:Due to the complexity of certification and custom engineering, lead times generally range from 16 to 26 weeks. This depends on frame size, voltage class, and specific customizations. We'll provide a detailed timeline during the quotation process.
Q:How do you ensure the motor won't ignite external atmosphere?
A:The casing is engineered to contain any internal explosion. Even in the event of ignition inside the motor, the enclosure strength prevents pressure rupture. Escaping gases pass through flame paths that cool them below ignition temperature before they reach the external atmosphere.
Q:What maintenance is required?
A:Regular maintenance includes bearing lubrication, insulation resistance testing, and visual inspections of the explosion-proof joints. We provide detailed maintenance schedules with every motor. Most customers find that our motors require 30-40% less maintenance than competitor products.
Contact Us
Ready to discuss your specific requirements for composite explosion-proof high voltage synchronous motor?
Contact our team at sxmotor@yeah.net
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