Product Highlights

Customizable Color: Color can be adjusted to satisfy special requirements.
Wide Power Range: Power options cover 0.55KW up to 25,000KW to fit diverse operating scenarios.
Multiple Voltage Options: Compatible with 6kV, 6.6kV, 10kV, 11kV, 13.2kV and 13.8kV.
High Efficiency Design: Adopts low-loss silicon steel sheets and optimized electromagnetic design for outstanding energy savings.
Robust Insulation System: F-class insulation with VPI vacuum pressure impregnation treatment, delivering excellent moisture resistance and impulse voltage withstand capability.
Flexible Mounting: IMB3 horizontal mounting configuration with adaptable terminal box positions.
Global Certifications: Compliant with ISO9001, CCC, CE, IEC and GB standards.
Reliable Bearing System: Equipped with SKF bearings and on-line oil filling and draining devices.

Product Attributes

Product Description

Y, YKS, YQF, YKK, YR, YRKS, YRQF and YRKK series high voltage three-phase induction motors are developed and localized by our company since the 1980s, with more than 30 years of iteration history. In recent years, upgraded insulation materials, low-loss silicon steel sheets, enhanced insulation grade and optimized electromagnetic design effectively cut various losses and raise motor power density. Drawing on our 60 years of experience in high voltage induction motor design and manufacturing, we have completed the latest round of optimization to match domestic and industrial market demands. Test results verify that the updated series reaches or approaches the world advanced level in both technical and economic performance. Mass production has been realized, and products are exported to more than 20 countries and regions including Europe, America, Africa, Hong Kong and Macao, as well as widely supplied across mainland China, earning consistent positive feedback from end users.

Built with premium raw materials and mature manufacturing processes, this motor series features high efficiency, energy saving, low vibration, stable operation and convenient installation and maintenance.

Power ratings, electrical characteristics, mounting dimensions and tolerances conform to GB755 Rotating Electrical Machines – Ratings and Performance, IEC 60034-1 Rotating Electrical Machines – Ratings and Performance and relevant machinery industry standards.

According to GB4942.1 and IEC 60034-5, the enclosure protection grades available for this series include IP23, IP44, IP54, IP55 and IP56. IP23 motors can be converted to IP44 (pipe ventilation type) or IPW24 (weather protected type). Custom protection grades are available upon request.

Cooling methods comply with GB/T1993 and IEC 60034-6, covering IC01, IC611 and IC81W. Alternative cooling solutions can be supplied for special requirements.

The standard construction and mounting form is IMB3 (horizontal foot-mounted), complying with GB997 and IEC 60034-7 for motor construction and mounting arrangement codes.

Based on rotor type, protection class and cooling method, the whole series is divided into 8 sub-series as shown below:

Technical data and overall installation dimensions of 10kV motors in all frame sizes can be adapted for 3kV, 10.5kV and 11kV versions of the same frame size.

Application

This series is widely adopted as prime movers to drive compressors, fans, water pumps, mills, conveyors and other mechanical equipment for mines, machinery, petrochemical plants, power stations and other industrial and mining enterprises.

If the motor drives equipment with large rotary inertia such as blowers, coal mills, rolling mills, crushers and belt conveyors, customers shall provide relevant technical parameters and sign a technical agreement with us for customized design to guarantee reliable operation.

Normal Operating Conditions

• Installation altitude ≤ 1000 m above sea level
• Maximum ambient temperature ≤ 40°C; minimum ambient temperature: -15°C for rolling bearing motors, 5°C for sliding bearing motors. YKS and YRKS series minimum ambient temperature is 5°C
• For YKS and YRKS air-water cooled motors: cooling water inlet temperature 5°C ~ 33°C
• In humid months, average maximum relative humidity ≤ 90%, with average minimum temperature ≤ 25°C in the same month
• Power frequency: 50Hz ±1%
• Operating voltage deviation: within ±5% of rated voltage
• Duty: S1 continuous running

Construction Description

Y and YR are the base series with IP23 protection and IC01 cooling. Derivative variants include YKS (air-water cooled), YQF (weather protected), YKK (air-air cooled), YRKS, YRQF and YRKK.

The motor adopts the mainstream box-type structure. Frame and end shields are steel plate welded for high rigidity and light weight. Cooler or protective cover can be removed for direct inspection and access, simplifying field installation and maintenance. The stator adopts external pressure fixing structure. Stator windings use F-class insulation and anti-corona materials, with reliable special binding for winding terminals. The whole stator undergoes VPI vacuum pressure impregnation with solventless F-class varnish, achieving superior insulation, moisture resistance and impulse withstand performance.

Most squirrel cage rotors use cast aluminum construction with low failure rate and stable operation. Copper bar squirrel cage rotors adopt advanced reliable welding technology and slot locking fixation. Wound rotors are equipped with F-class insulation and processed by VPI impregnation as well.

Two bearing types are optional: rolling bearing and sliding bearing, selected according to motor power and speed. Basic bearing protection grade is IP44; bearing protection will be upgraded accordingly for higher motor enclosure grades.

Rolling bearing versions are fitted with on-line oil filling and draining devices, enabling lubrication maintenance without machine shutdown.

The main terminal box is sealed with IP54 protection. It is mounted on the right side (viewed from the drive end), and can be switched to the left side as requested. Cable entry direction can be adjusted to top, bottom, left or right. Independent grounding terminals are arranged inside the box.

Starting Instruction for Y, YKS, YQF, YKK Induction Motors

Finite element thermal and stress simulation is applied for squirrel cage rotor design to avoid premature damage caused by overheating during startup. Customers need to meet the following prerequisites:

• The total inertia of driven machinery (converted to motor speed) shall not exceed the allowable load inertia value listed in technical datasheet
• Terminal voltage at motor terminals shall not drop below 85% of rated voltage during startup
• Load torque characteristic matches typical fan and pump torque curve

When the above conditions are satisfied, the motor allows two consecutive cold starts or one hot start, with natural coast-down interval between starts. Additional restart attempts require a one-hour cooling interval.

If the load inertia exceeds the datasheet limit, frequent starting or heavy-load startup is required, please contact our engineering team for customized design to ensure safe startup.

Certifications

YKS630 AC High Voltage Induction Motor IC81W 4P 4500kW 10kV

Packaging & Shipping

YKS630 AC High Voltage Induction Motor IC81W 4P 4500kW 10kV
Power range: 0.55KW ~20,000KW
Voltage range: 380V to 13.8KV
Shaft height: 80mm-1120mm

Our Advantages

Wide available power range
Excellent starting characteristics
Suitable for multiple industrial sectors and global projects
High reliability to cut downtime and operating cost
Customizable design for flexible matching
Witnessed FAT (Factory Acceptance Test) available on-site or remotely

Quality Control

In-process Inspection

All measuring instruments and gauges are calibrated annually.

Test

Every motor must complete factory test before shipment. A formal test report will be issued for qualified units.

Routine Test Items
Winding three-phase DC resistance
Winding insulation resistance to earth
Winding high voltage withstand test
No-load current
No-load power
No-load loss
Three-phase no-load current unbalance
Locked rotor current
Locked rotor torque
Maximum torque
Rotation direction
Vibration (horizontal, vertical, axial)
Noise

Type Test Items
Full load input power
Full load current
Stator winding loss
Rotor winding loss
Iron loss
Mechanical loss
Stray loss
Full load slip
Stator winding temperature rise
Bearing temperature
Hot insulation resistance
Overload test
Full load power factor
Efficiency

After Sales Service

Warranty Terms

Standard warranty: 12 months after commissioning or 18 months after delivery, whichever occurs first.
Extended warranty plan is available upon inquiry.