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YR Series High Voltage Three-Phase Asynchronous Motor

YR Series High-Voltage Three-Phase Asynchronous Motor

The YR series high-voltage three-phase asynchronous motor is specifically designed by Simo for large-power industrial equipment, widely used in metallurgy, power generation, mining, petrochemical, and heavy machinery industries. With advanced electromagnetic design and high-strength materials, the motor delivers high efficiency, high power output, and reliable long-term operation.

The motor features a robust and durable structure, with optimized cooling and insulation systems that ensure stable performance under high-temperature, high-humidity, and high-vibration conditions. Multiple power ratings and mounting configurations are available to meet the diverse requirements of industrial applications.

  • High-voltage design suitable for large-power industrial equipment

  • Three-phase asynchronous motor, efficient and stable operation

  • Optimized cooling and insulation systems for enhanced reliability

  • Multiple power ratings and mounting configurations available

  • Ideal for metallurgy, power, mining, petrochemical, and heavy machinery

Applications: Large industrial machinery, mining hoists, metallurgical rolling mills, power transmission systems, and other high-voltage industrial scenarios.

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The YR series high voltage three-phase asynchronous motor is designed for industrial applications that require reliable and efficient high voltage power. Known for its robust construction, excellent performance, and energy efficiency, this motor is ideal for use in power plants, heavy machinery, and various industrial systems.

Xi’an Taifu Simo YR Series High-Voltage Three-Phase Asynchronous Motor – Comprehensive Overview

High-Performance Power Solution Designed for Harsh Industrial Environments

The Xi’an Taifu Simo YR Series (H355–1000) High-Voltage Three-Phase Asynchronous Motor is a high-performance power solution specifically engineered for heavy-duty industrial applications.
This series adopts advanced wound rotor technology, delivering high operational efficiency while providing excellent starting characteristics and stable speed regulation performance. It is an ideal drive solution for industrial equipment with demanding operating requirements.

Motor Model Identification – Accurate Recognition of Specifications

The YR series high-voltage three-phase asynchronous motors use a standardized naming system.
Example: YR3551-4

  • YR: Wound rotor asynchronous motor
  • 3551:
    • 355 – Frame center height 355 mm
    • 1 – No.1 core length
  • 4: Number of poles

This designation system complies with national motor coding standards, enabling fast identification of key parameters and accurate motor selection.


Technical Overview – Professional Design for Diverse Industrial Needs

Core Technical Features

The YR Series (H355–1000) 6 kV / 10 kV high-voltage three-phase asynchronous motors utilize advanced wound rotor construction.
Key specifications include:

  • Protection class: IP23
  • Cooling methods: IC01, IC11, IC21, IC31 (in accordance with GB/T1993)

The series integrates high efficiency, low noise operation, minimal vibration, compact structure, reliable performance, and easy maintenance, ensuring stable long-term operation.


Distinct Performance Advantages

YR series motors provide outstanding starting performance, delivering high starting torque with relatively low starting current, and allow speed regulation within a certain range.
They are especially suitable for:

  • Power supply networks with insufficient capacity to start squirrel-cage motors
  • Applications requiring long or frequent starting cycles
  • Industrial processes requiring limited-range speed control

Wide Application Scope

YR series motors are widely used in heavy-duty equipment, including:

  • Heavy hoisting equipment, rolling mills, wire drawing machines
  • Mining crushers, compressor systems, large-capacity pumps
  • Other heavy machinery requiring high starting torque and adjustable speed capability

Standard Technical Parameters

  • Mounting arrangement: IMB3
  • Duty type: Continuous duty (S1)
  • Rated frequency: 50 Hz
  • Rated voltage: 6 kV, 10 kV (other voltage levels available on request)
  • Insulation class: F class
  • Bearing system:
    • IP54 bearing structure
    • H355–630: grease-lubricated rolling bearings
    • H710–1000: sleeve bearings with forced thin-oil lubrication

Core Technical Advantages – Assurance of Superior Quality

Innovative Rotor Design

The wound rotor structure provides superior starting performance compared with squirrel-cage motors.
By connecting external resistors or frequency-sensitive rheostats to the rotor circuit, smooth starting and effective speed regulation can be achieved, significantly reducing grid impact.

Optimized Cooling System

Multiple cooling options (IC01, IC11, IC21, IC31) allow users to select the most suitable solution based on operating conditions.
Optimized heat dissipation ensures stable operating temperatures under continuous heavy-load conditions, extending motor service life.

Robust Mechanical Structure

The frame and end covers are manufactured from high-strength materials and optimized through precise structural calculations and testing.
This design ensures excellent mechanical strength and dynamic stability, enabling operation under heavy load impacts and harsh environments.

Reliable Insulation System

Stator windings use F-class or higher insulation materials with anti-corona treatment.
The insulation system is processed using Vacuum Pressure Impregnation (VPI) technology, providing excellent moisture resistance and corrosion protection for reliable operation in high-temperature and high-humidity environments.


Xi’an Simo Motor Comprehensive Quality Assurance System

Enterprise Strength

Simo Motor (Group) Co., Ltd. is a leading enterprise in China’s motor industry, specializing in medium and large AC/DC motors across high- and low-voltage ranges.
The company integrates motor design, manufacturing, electrical control, precision machining, mold production, casting, and logistics to deliver complete power system solutions.

Authoritative Certifications and Honors

  • ISO 9001 Quality Management System
  • ISO 14001 Environmental Management System
  • OHSAS 18001 Occupational Health and Safety Management System
  • CE (Europe), UL (USA), CCC (China) certifications
  • Recognitions including Top 500 Machinery Enterprises, Top Electrical Industry Enterprises, AAA Quality Credit Enterprise

Strict Quality Commitment

  • Full compliance with national standards and technical specifications
  • Non-conforming products are never released from the factory
  • 72-hour continuous operation testing after final assembly
  • Guaranteed on-time delivery under normal sales conditions
  • Customer response within 24 hours, on-site service initiated within 48 hours
  • Full warranty coverage for quality issues, including repair, replacement, or return
  • Lifetime cost-based warranty after product delivery

Ordering Guide and Technical Data

Standard Configuration

  • Motor model: YR3551-4
  • Mounting type: IMB3
  • Rated power: 220 kW
  • Protection class: IP23
  • Rated voltage: 6000 V
  • Cooling method: IC01
  • Rated frequency: 50 Hz
  • Insulation class: F
  • Synchronous speed: 1500 r/min
  • Ambient conditions: altitude ≤ 1000 m, ambient temperature ≤ 40 °C

Important Notes

Applicable Technical Standards

  • H355–630 motors manufactured according to JB/T7594-94 and JB/T10445-2004
  • H710–1000 motors manufactured according to GB/T13957-1992

Standard Ordering Procedure

  • Refer to the product catalog to confirm specifications
  • Prioritize standard models to reduce cost and delivery time
  • Clearly specify motor model, power, voltage, and frequency in the contract
  • If noise level is not specified, Grade 2 is supplied by default

Special Customization Options

  • Dual shaft extension
  • Special terminal box position
  • Reverse rotation
  • Tropical, outdoor, or anti-corrosion designs

All special requirements must be clearly stated in the contract and confirmed with the factory technical department in advance.


Professional Selection Recommendations

When selecting a YR series high-voltage motor, key factors to consider include:

  • Load characteristics: load type, starting frequency, inertia, speed regulation requirements
  • Power supply conditions: voltage level, fluctuation range, grid capacity limitations
  • Operating environment: temperature, humidity, altitude, dust conditions
  • Installation space and ventilation conditions
  • Maintenance cycle and accessibility requirements

For applications requiring high starting torque, limited power grid capacity, or adjustable speed capability, the YR series wound rotor motor is a superior choice compared to squirrel-cage motors.


The Xi’an Taifu Simo YR Series (H355–1000) High-Voltage Three-Phase Asynchronous Motor has become a preferred power solution across multiple industries due to its advanced wound rotor technology, excellent starting performance, and reliable quality.
With strong technical expertise and a comprehensive service system, Simo Motor provides professional technical support and dependable after-sales service worldwide.

For detailed technical information or customized motor selection support, please contact the Simo Motor professional technical team.

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Simo Motor After-Sales Service Policy: Quality First, Customer Foremost

Sincere, Attentive, Dedicated — Simo Always Cares


Preface

Thank you for choosing Simo Motor products. As a company with many years of experience in motor manufacturing, Simo Motor always adheres to the principle of "Quality First, Customer Foremost." Through a comprehensive service system, we ensure that every customer enjoys efficient and professional after-sales support.

Our products have repeatedly been awarded provincial, municipal, and national honors such as “High-Quality Product,” “China Famous Brand Product,” “National Exemption from Inspection Product,” and “China Well-Known Trademark.” To further enhance customer experience, we have formulated this after-sales service policy, aimed at providing comprehensive, prompt, and satisfactory service guarantees.


1. Quality Assurance Commitment

Simo Motor strictly implements full quality control in accordance with international standards, national standards, industry standards, and corporate standards:

  • All products are manufactured under the effective operation of the GB/T 19001-2008/ISO 9001:2008 Quality Management System, ensuring rigorous inspection from raw material intake to final product delivery.

  • We guarantee that all products provided are brand new, unused, and meet the quality requirements stipulated in customer contracts.

  • We maintain a quality management system compliant with GB/T 19001-2000 idt ISO 9001:2000, ensuring its effective operation.


2. Pre-Sales Service

To help customers make the best choice, Simo Motor provides comprehensive pre-sales support:

  • Professional Technical Consultation: Responding to customer inquiries about motor products and technical issues.

  • Personalized Solutions: Objectively introducing Simo Motor product features and performance, and providing customized power solutions.

  • Comprehensive Product Information: Providing detailed quotations, drawings, and motor samples to help customers fully understand the product.


3. Ordering Instructions

To ensure the motor meets your usage requirements, please specify the following parameters when placing an order:

  • Basic Parameters: Motor model, rated power, rated voltage, number of poles, rated frequency.

  • Installation Environment: Protection level, cooling method, installation type, rotation direction, environmental conditions, cable exit position.

  • Usage Conditions: Installation altitude, working environment temperature, motor load type.

For special requirements, a separate technical agreement must be signed before placing an order. You may also call our customer service hotline 159-0292-3228 for professional guidance.


4. Warranty Policy Details

1. Warranty Period

Simo Motor provides a warranty of up to two years from the shipping date. Within this period, if the motor is damaged or cannot operate properly due to manufacturing defects, Simo Motor will repair or replace parts or the motor free of charge.

2. Warranty Coverage

  • The warranty covers product quality issues caused by our company, with free replacement of parts or free repair.

  • Warranty services require correct use and regular maintenance, following the original operation manual and recommended lubrication, cleaning, and care instructions.

3. Exclusions from Warranty

The following are not covered by the warranty:

  • Damage caused by non-designated personnel

  • Unauthorized modifications or self-repair

  • Use of non-official parts or software

  • Failure to follow operation manual instructions for use, handling, and maintenance

  • Damage caused by natural disasters (wind, fire, flood, earthquake, etc.)

  • Normal wear and tear under standard use


5. Post-Warranty Service

After the warranty expires, Simo Motor continues to provide service support:

  • Lifetime Paid Service: After the warranty period, if the product fails, we offer lifetime paid service, supplying consumable parts and components at cost price.

  • Regular Follow-Up: Our after-sales staff will periodically contact users to check product status and address potential issues.

  • Professional Repair Services: The company undertakes repair services for all types of motors, whether under warranty or not, providing professional maintenance and inspection.


6. Service Commitment and Standards

Simo Motor upholds the "Sincere, Attentive, Dedicated — Simo Always Cares" Three-Heart Service Philosophy, ensuring excellent customer experience through standardized service processes:

  • Professional Service Team: A dedicated team provides installation guidance, fault diagnosis, and repair services, ensuring efficient motor operation.

  • Rapid Response Mechanism: After receiving customer feedback, our after-sales team responds promptly and formulates quick solutions.

  • Full Tracking and Records: All service processes are documented to ensure traceability and continuous improvement of service quality.


7. Customer Complaint Channels

If you are not satisfied with Simo Motor’s services, please provide feedback through the following channels:

  • Direct complaints to the service department or headquarters

  • Call our customer service hotline: 159-0292-3228

We take every feedback seriously and continuously strive to improve our service quality.


Conclusion

Simo Motor will continue to provide high-quality products and professional after-sales service. Through a complete service system, we solve your concerns and ensure peace of mind. We firmly believe that only with customer success can Simo Motor grow. Choosing Simo Motor means choosing quality and trust.

Simo Motor — Dedicated Service, Creating the Future Together!

Simo Motor Brand Advantages: Outstanding Quality, Leading Innovation and Development in the Motor Industry

Over 60 Years of Professional Experience, Setting the Benchmark in the Motor Industry


Brand Heritage and Strength

Simo Motor (formerly Xi’an Motor Factory) was established in 1955. As one of the leading enterprises in China’s motor industry, it has over six decades of manufacturing experience and technical expertise. Today, the company has grown into a large-scale modern enterprise integrating motor product R&D, manufacturing, and sales. Its products are widely used in key sectors such as power, coal, petroleum, mining, metallurgy, railways, transportation, chemical, agriculture, water conservancy, and aviation.

With profound technical expertise and continuous innovation, Simo Motor has built a prestigious brand image in the motor industry. Its products are exported to more than 40 countries and regions, including North America, Europe, the Middle East, Southeast Asia, Africa, and Australia, earning trust and praise from global customers.


Core Technology Advantages

1. Leading R&D and Innovation Capability

Simo Motor treats technological innovation as the core driving force of enterprise development:

  • Professional R&D Team: Composed of senior engineers and technical experts focusing on cutting-edge motor technology research and applications.

  • Continuous Investment in Technology: 5%-7% of annual sales revenue is invested in R&D to ensure continuous innovation and product upgrades.

  • Patented Technology Achievements: Over 100 national patents, with multiple products receiving national and provincial science and technology progress awards.

  • Industry-Academia Collaboration: Strategic partnerships with renowned universities and research institutes to advance motor technology development.

2. Excellent Product Quality System

Simo Motor has established a robust quality assurance system to ensure each motor meets the highest standards:

  • International Certifications: ISO9001 Quality Management, ISO14001 Environmental Management, and OHSAS18001 Occupational Health and Safety certifications.

  • Strict Quality Control: 68 rigorous inspection processes from raw material procurement to final product delivery to ensure zero defects.

  • Advanced Testing Equipment: Equipped with international motor performance testing systems, vibration analyzers, noise measurement devices, and more.

  • Continuous Quality Improvement: Comprehensive feedback mechanisms for continuous optimization of production processes and product stability.


Product Advantages and Features

1. High-Efficiency Energy-Saving Technology

Simo Motor actively responds to national energy-saving policies with a series of high-efficiency products:

  • High-Efficiency Motor Series: Meets the national GB18613-2020 energy efficiency standards, with some products reaching IE4/IE5 ultra-high efficiency levels.

  • Energy-Saving Technology: Uses premium silicon steel, low-loss bearings, and efficient cooling systems to reduce operating energy consumption.

  • Intelligent Control Technology: Advanced variable frequency control systems optimize motor operation, improving energy savings by 15%-30%.

2. Outstanding Performance

Simo Motor products are known for high reliability, long service life, and low maintenance costs:

  • Powerful Output: Optimized electromagnetic design ensures high starting torque and strong overload capability.

  • Low Vibration and Noise: Dynamic balancing and noise reduction technologies ensure vibration and noise levels below national standards.

  • Strong Environmental Adaptability: Designed for harsh conditions with heat resistance, moisture-proof, and corrosion-resistant features.

  • Long Lifespan Design: Key components use specialized treatment and premium materials, with a design life exceeding 100,000 hours.

3. Comprehensive Product Series

Simo Motor provides a wide range of products to meet diverse customer needs:

  • High-Voltage Motors: Voltage levels of 6kV, 10kV, and power range 200–10,000 kW.

  • Low-Voltage Motors: Series such as YX3, YE3, YE4, with power range 0.55–1,000 kW.

  • Explosion-Proof Motors: Certified for use in flammable and explosive environments.

  • Special Motors: Customized for industries such as mining, metallurgy, and marine applications.

  • Non-Standard Customization: Strong ability to provide tailored solutions according to customer requirements.


Service System Advantages

Simo Motor has established a comprehensive customer service system:

  • Pre-Sales Technical Support: Professional selection guidance, solution design, and product demonstration.

  • In-Sales Support: Strict contract compliance, on-time delivery, and installation guidance.

  • After-Sales Guarantee: 24-month warranty, 24/7 technical support, 48-hour on-site service commitment.

  • Lifetime Maintenance Support: Customer equipment files maintained for full lifecycle service.


Industry Application Advantages

Simo Motor has extensive experience across key industries:

  • Power Industry: Provides reliable motors for thermal, hydro, and nuclear power.

  • Coal Industry: Explosion-proof motors certified for coal mine safety.

  • Petrochemical Industry: Corrosion-resistant and explosion-proof motors for harsh environments.

  • Metallurgy: High-overload, high-temperature resistant motors meet specialized equipment needs.

  • Transportation: Customized motors for railways, urban transit, and ports.


Brand Honors and Certifications

Simo Motor’s excellent product quality and market performance have earned multiple honors:

  • China Famous Brand Product, National Exemption from Inspection Product, China Well-Known Trademark

  • High-Tech Enterprise, Provincial Enterprise Technology Center

  • Multiple provincial and ministerial-level science and technology awards

  • Credit-worthy and trustworthy enterprise, AAA-level quality reputation


Conclusion

Choosing Simo Motor means choosing reliable quality, leading technology, and comprehensive service support. Over 60 years of professional accumulation have given Simo Motor deep technical expertise and rich industry experience, providing customers with the best motor products and complete power solutions.

In the future, Simo Motor will continue to adhere to the philosophy of “Quality First, Innovation Driven, Customer Foremost”, constantly improving product technology and quality, creating greater value for customers, and contributing to the development of China’s motor industry.

Simo Motor — Powerful, Efficient, and Fully Supported!

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