YQ JS series motor
Voltage range：380V±5%
Power range：45-800kW
Protection level：IP23
Application：YQ(JS) series medium-sized motors can drive a variety of different machinery, such as fans, compressors, water pumps, crushers, ball mills, cutting machine tools, transportation machinery and other equipment, and can be used in coal mines, machinery industries, power plants and various industrial and mining enterprises. Used as prime mover.
Advantage: Full voltage direct start.
Others： SKF, NSK, FAG bearings can be replaced according to customer requirements.
- Product Description
YQ JS Series Motor: Heavy-Duty Wound Rotor Solutions for Industrial Applications
Modern industrial operations demand reliable power equipment that can handle heavy loads, frequent starts, and challenging working conditions. The YQ JS series motor represents a specialized wound rotor solution designed specifically for machinery requiring high starting torque and smooth speed regulation. With voltage rated at 380V±5% and power ranging from 45-800kW, these medium-sized motors excel in applications where ordinary squirrel cage motors fall short.
Built with IP23 protection and full voltage direct start capability, these motors serve as prime movers in demanding environments. They power fans, compressors, water pumps, crushers, ball mills, cutting machine tools, and transportation machinery across coal mines, power plants, and various industrial enterprises.
YQ JS Series Motor Manufacturer and Supplier
Shaanxi Qihe Xicheng Electromechanical Equipment Co., Ltd. brings over 20 years of expertise in providing power equipment solutions. We have established relationships with over 30 leading motor manufacturers such as ABB, Siemens, Wolong and XEMC internationally. This wide range of suppliers guarantees that you will obtain real and high-performance parts with complete CCC, CE, ISO9001:2000 and CRCC certificates.
Our commitment extends beyond product supply. We deliver complete solutions combining high energy efficiency, low energy consumption, and stable power output with responsive technical support.
Pain Points vs. Solutions
Your Challenge: Standard motors struggle with high inrush currents during startup, causing grid voltage drops and limiting operational flexibility.
Our Solution: Wound rotor design enables full voltage direct start with significantly reduced starting current while delivering superior starting torque.
Your Challenge: Equipment requires speed adjustment without expensive variable frequency drives.
Our Solution: External resistor-based stepped speed regulation provides cost-effective control for applications needing operational flexibility.
Your Challenge: Heavy machinery experiences instantaneous load impacts that damage conventional motors.
Our Solution: Robust construction handles sudden load surges from ball mills, winches, and similar heavy-duty equipment.
Technical Advantages
The product distinguishes itself through multiple performance benefits:
· High Starting Torque: Delivers powerful initial rotation for heavy loads
· Low Starting Inrush Current: Protects your electrical infrastructure from voltage instabilities
· Stepped Speed Regulation: Adjusts operational speeds through external resistors
· Heavy Load Tolerance: Withstands instantaneous impact loads without failure
· Frequent Start-Stop Capability: Designed for demanding duty cycles
· Premium Bearing Options: Available with SKF, NSK, or FAG bearings per your specifications
Production Process
Quality manufacturing ensures long-term reliability. Our production follows strict protocols:
We source components exclusively from verified suppliers. Each motor undergoes comprehensive assembly with precision alignment of rotor and stator components. Slip ring assembly receives particular attention to ensure optimal electrical contact.
Factory testing validates performance parameters before shipment. All products pass through multiple quality checkpoints managed by our SAP factory management system, guaranteeing consistency across production batches.
Industry Applications
These wound rotor motors prove ideal for:
· Mining Operations: Ball mills, lifting winches, heavy belt conveyors
· Metallurgy: Crushers, rolling mills, material handling systems
· Port Facilities: Heavy lifting equipment, cargo handling machinery
· Power Generation: Auxiliary equipment requiring high starting torque
· Heavy Manufacturing: Equipment demanding frequent starts and variable loads
Note: The YQ JS series motor is optimized for heavy-duty applications. For ordinary fans, water pumps, or continuous light-load variable frequency scenarios, alternative motor types may prove more suitable.
Customization Capabilities
We understand that industrial requirements vary significantly. Our customization services include:
· Dimensional adjustments to match specific installation constraints
· Bearing selection based on operational environment
· Voltage and frequency modifications for regional specifications
· Special shaft configurations for unique coupling requirements
· Custom mounting arrangements
Our experienced engineering team evaluates your actual application requirements to recommend optimal specifications for energy efficiency, power stability, and operational reliability.
Reliability Testing & Certifications
Every motor meets rigorous international standards. Our products hold comprehensive certifications including CCC, CE, ISO9001:2000, Ministry of Railways CRCC, CQC quality management, ZDHY environmental management, China energy saving production certification, UL, and GOST certifications.
These credentials demonstrate our commitment to manufacturing excellence and regulatory compliance across global markets.
Why Choose XCMOTOR
Extensive Supplier Network: Access to 30+ trusted manufacturers ensures component quality and availability.
Technical Expertise: Over two decades of experience in power equipment solutions.
Comprehensive Support: Pre-sales consultation, technical guidance, and responsive after-sales service.
Flexible Delivery: We coordinate shipping via sea, land, air, or multimodal transport based on your requirements.
Quality Assurance: 30-day return policy and dedicated support available even on weekends.
Competitive Advantage: Optimal pricing, appropriate production cycles, and customized solutions tailored to your needs.
FAQ
Q：What advantages does YQ/JS motor have over ordinary squirrel cage motors?
A：The wound rotor design offers four key benefits: high starting torque with low starting inrush current that prevents grid voltage drops; stepped smooth speed regulation via external resistors; capability to bear instantaneous heavy load impacts from equipment like ball mills and winches; and suitability for frequent start-stop operations with high-torque output requirements.
Q：What equipment is the product suitable for?
A：These motors excel in mining ball mills, lifting winches, heavy belt conveyors, metallurgical crushers, and port heavy lifting equipment. They're not recommended for ordinary fans, water pumps, or long-term light-load variable frequency speed regulation scenarios.
Q：Why does the YQ JS motor overheat and run at low speed under rated load?
A：Common causes include three-phase power phase loss or low voltage; incomplete removal of rotor resistors leaving excess resistance in the circuit; poor contact between slip rings and brushes increasing rotor loss; or blockage of rear mechanical equipment causing prolonged motor overload.
Q：Can YQ JS wound rotor motor be matched with frequency converter?
A：Yes, but simultaneous use of resistance speed regulation and frequency conversion isn't recommended. For frequency conversion control, rotor slip rings must be fully short-circuited and parameters set as standard asynchronous variable frequency motor. Applications requiring both heavy-load startup and variable frequency speed regulation need customized control systems and motors with reinforced insulation windings to prevent rotor high voltage insulation breakdown.
Contact Us
Ready to discuss your YQ JS series motor heavy-duty motor requirements? Our technical team stands ready to help you select the right specifications for your application.
Email: XCMOTORs@163.com">xcmotors@163.com
