Product Highlights

Customizable Color: The motor color can be adjusted to match your specific requirements. Wide Voltage Options: Rated voltages include 6kV, 6.6kV, 10kV, 11kV and 13.8kV. High Efficiency Structure: Max efficiency reaches 96.3%, adopting low-loss electrical silicon steel sheets for energy saving. Multiple Protection Grades: IP23, IP44, IP54, IP55 and IP56 protection classes are available. Diverse Cooling Solutions: Supports IC01, IC611 and IC81W cooling modes. Authoritative Certifications: Complies with ISO9001, CCC and CE standards. Durable Bearing Assembly: Equipped with rolling bearings or sliding bearings, matched with dedicated oil filling tools. Secure Warranty Terms: 12-month warranty after commissioning or 18-month warranty after shipment.

Product Attributes

Product Description

The Y, YKS, YQF, YKK, YR, YRKS, YRQF and YRKK series high voltage three-phase induction motors are developed and upgraded based on the technology introduced in the 1980s, with more than 30 years of iteration history. In recent years, upgraded insulation materials, low-loss silicon steel sheets, upgraded protection grades and optimized electromagnetic design effectively cut various internal losses and improve power density. Drawing on our 60 years of experience in high voltage induction motor design and manufacturing, we re-optimized this series to satisfy domestic and global industrial demands. Test results verify that this motor series achieves or approaches world-class technical and economic performance. Mass production has been realized, and products are exported to more than 20 countries and regions covering Europe, America, Africa, Hong Kong, Macao and other areas, earning consistent positive feedback from end users.

Manufactured with premium raw materials and mature production processes, this motor series features high efficiency, low vibration, stable operation and easy installation and maintenance.

Its power ratings, electrical performance, mounting dimensions and tolerances conform to GB755 Rotating Electrical Machines – Rating and Performance, IEC 60034-1 Rotating Electrical Machines – Rating and Performance and relevant machinery industry standards.

Enclosure protection grades follow GB4942.1 and IEC 60034-5, covering IP23, IP44, IP54, IP55 and IP56. IP23 motors can be converted to IP44 pipeline ventilation type or IPW24 weather-proof type. Custom protection grades are available upon request.

Cooling modes comply with GB/T1993 and IEC 60034-6, including IC01, IC611 and IC81W. Special cooling schemes can be customized for special working conditions.

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

According to rotor type, protection class and cooling method, the series is divided into 8 sub-models as below:

All frame sizes of 10kV motors listed can be adapted into 3kV, 10.5kV and 11kV versions with matched installation dimensions.

Application

This high voltage motor series drives compressors, fans, water pumps, conveyors and other general machinery, widely used as prime movers in mines, machinery factories, petrochemical plants, power stations and other industrial and mining sites. For heavy inertia loads such as blowers, coal mills, rolling mills, crushers and belt conveyors, customers need to provide complete technical data and sign a technical agreement with us for targeted design, to guarantee stable operation.

Normal Operating Conditions

• Installation altitude ≤1000m 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 5°C
• For YKS and YRKS air-water cooled motors: cooling water inlet temperature 5°C ~ 33°C
• Monthly average maximum relative humidity ≤90% meanwhile monthly average minimum temperature ≤25°C in humid months
• Power frequency: 50Hz ±1%
• Operating voltage deviation: within ±5% of rated voltage
• Duty: S1 continuous operation

Construction Description

Y and YR are the base models with IP23 protection and IC01 cooling. Derivative types include YKS air-water cooled, YQF weather-proof, YKK air-air cooled, YRKS, YRQF and YRKK motors.

The motor adopts a modular box-type structure popular globally. The frame and end shields are steel plate welded, delivering high rigidity and lightweight structure. After removing the cooler or protective cover, internal parts are accessible for convenient inspection, installation and maintenance. The stator adopts outer pressing structure. Stator windings use Class F insulation and anti-corona materials. Winding terminals are fixed with reliable special binding technology. The whole stator undergoes VPI vacuum pressure impregnation with solventless Class F varnish, providing excellent insulation, moisture resistance and impulse withstand capability.

Squirrel cage rotors are mostly cast aluminum type with low failure rate and stable running. Copper bar squirrel cage rotors adopt advanced reliable welding technology and slot fastening treatment. Wound rotors are equipped with Class F insulation and also processed by VPI impregnation.

Two bearing options are available: rolling bearing and sliding bearing, selected according to motor power and speed. Base bearing protection grade is IP44; bearing protection will be upgraded accordingly for higher motor protection grades. Rolling bearing versions are fitted with on-line oil filling and draining ports. Special oil filling tools support oil replenishment and discharge without shutdown.

The main terminal box is sealed with IP54 protection. It is normally mounted on the right side viewed from the drive end and can be moved to the left side on request. Cable entry direction can be adjusted to top, bottom, left or right. Independent grounding terminals are built inside the box.

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

We use computer simulation to calculate temperature and stress distribution of squirrel cage rotors during startup, preventing early damage caused by overload starting. Customers need to satisfy the following prerequisites:

• The converted moment of inertia of driven equipment shall not exceed the allowable load J value listed in technical datasheet
• Terminal voltage during starting shall not be lower than 85% of rated voltage
• Load torque characteristic matches typical pump or fan curve

When the above requirements are met, the motor allows two consecutive cold starts or one hot start, with natural coast-down interval between starts. Additional restart attempts need to wait for one hour. If the load inertia exceeds the limit, frequent starting or heavy-load starting is required, please contact us for customized design to ensure reliable startup performance.

Certifications

ISO9001, CCC, CE

Packaging & Shipping

Yks400 High Voltage Induction Electric Motor for Pump 355kw 6kv 11kv Power range: 0.55KW ~20,000KW Voltage range: 380V to 13.8KV Shaft height: 80mm-1120mm

Our Advantages

Wide power coverage Superior starting performance Suitable for diverse industrial sectors worldwide High reliability to cut downtime and operating cost Customizable design for special requirements Factory Acceptance Test (FAT) available on-site or witnessed remotely

Quality Control

All measuring instruments are calibrated annually. Full inspection is implemented component by component.

Test Items

Every motor must complete factory testing before shipment. Qualified products will be delivered with an official test report. 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 Period

Standard warranty: 12 months after commissioning OR 18 months after delivery, whichever comes first. Extended warranty service is available upon inquiry.