Product Highlights

Customizable Color: Color can be customized to meet specific customer requirements. High Efficiency Design: Reduces power loss and boosts output capacity by adopting premium insulation materials and low-loss silicon steel sheets. Reliable Construction: Steel plate welded frame, VPI insulation system, cast aluminum or copper bar squirrel cage rotor for long service life. Flexible Protection Options: Multiple protection classes including IP23, IP44, IP54, IP55, IP56 and climate resistant types. Multiple Cooling Modes: IC01, IC611 and IC81W air-water cooling options to fit different working conditions. Global Authorized Certifications: Compliant with ISO9001, CCC, CE, GB755 and IEC34-1 standards. Rich Export Experience: Over 30 years of manufacturing experience, products exported to more than 20 countries. Thoughtful Warranty Terms: Standard warranty covers 12 months after commissioning or 18 months after delivery.

Product Attributes

Product Description

YKS series high voltage three-phase induction motor is developed and upgraded by our company based on technology introduced back in the 1980s, with more than 30 years of iterative optimization. Benefiting from upgraded insulation materials, low-loss silicon steel, enhanced design standards and structural optimization, this motor features lower energy loss and higher power density. Drawing on nearly 60 years of R&D and manufacturing experience for high voltage three-phase induction motors, we have completed the latest round of design optimization to satisfy domestic and overseas market demands. Test results verify that this new series reaches or approaches international advanced levels in both technical and economic performance. Mass production has been realized, and the motors are widely supplied across China and exported to over 20 countries and regions including Europe, America, Africa, Hong Kong and Macao, winning consistent positive feedback from end users.

Built with premium raw materials and mature production processes, this series motor delivers high efficiency, energy saving, low vibration, stable operation and easy installation & maintenance.

Its power ratings, electrical characteristics, mounting dimensions and tolerances conform to GB755 Rotating Electrical Machines Ratings and Performance, IEC34-1 and related machinery industry standards.

The enclosure protection grades cover IP23, IP44, IP54, IP55 and IP56 in accordance with GB4942.1 and IEC34-5. IP23 version can be converted to IP44 (pipe ventilation) or IPW24 climate protection type. Custom protection grades are available upon request.

Three standard cooling methods are available as per GB/T1993 and IEC34-6: IC01, IC611 and IC81W. Other cooling solutions can be customized for special requirements.

The basic structure and mounting form is IMB3 (horizontal foot-mounted), complying with GB997 and IEC 34-7 for rotating machine structural and mounting codes.

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

All dimension data of 10kV motors listed in this catalogue can be adapted for 3kV, 10.5kV and 11kV specifications.

Application

This series high voltage motor is widely used to drive compressors, fans, water pumps, material handling equipment, conveyors and other general machinery. It serves as prime mover for mines, machinery workshops, petrochemical plants, power stations and other industrial & mining facilities.

If used for equipment with large rotary inertia such as blowers, coal mills, rolling mills, crushers and belt conveyors, customers need to provide complete technical parameters and sign a technical agreement with us for customized design to guarantee stable operation.

Normal Operating Conditions

• Altitude: ≤1000m above sea level
• Max ambient temperature: ≤40℃; Minimum ambient temperature: -15℃ for rolling bearing motors, 5℃ for sliding bearing motors. YKS and YRKS series minimum ambient temperature is 5℃
• For YKS / YRKS: Cooling water inlet temperature 5℃ ~ 33℃
• Humidity: Monthly average relative humidity ≤90% in humid months, meanwhile monthly average lowest temperature ≤25℃
• Power frequency: 50Hz ±1%
• Supply voltage deviation: within ±5% of rated voltage
• Duty: Continuous running S1

Construction Description

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

This motor adopts popular box-type construction. Frame and end shields are steel plate welded for high rigidity and light weight. After removing the protective cover or cooler, internal parts are accessible for convenient inspection, installation and maintenance.

The stator adopts external pressing structure. Stator winding uses Class F insulation and anti-corona materials with reliable terminal binding. The whole stator undergoes VPI vacuum pressure impregnation with solventless F-class varnish, providing excellent insulation, moisture resistance and shock resistance.

Squirrel cage rotors are mostly cast aluminum type with proven anti-crack performance for stable running. Copper bar squirrel cage rotors use advanced reliable welding and slot fixing technology. Wound rotors are fitted with Class F insulation and processed by VPI impregnation.

Bearings are available in rolling bearing and sliding bearing versions, selected according to motor power, speed and protection requirements. Higher protection versions come with upgraded bearing protection.

Rolling bearing motors are equipped with on-line oil filling and draining ports, allowing grease replenishment and discharge without shutdown with special tools.

The main terminal box is sealed with IP54 protection grade. It is normally fitted on the right side (viewed from shaft extension), and can be switched to the left side on request. Cable entry ports can be oriented upward, downward, left or right. Independent earthing terminals are built inside the box.

Starting Instruction for Induction Motor (Y, YKS, YQF, YKK)

Finite element thermal and pressure simulation is applied on squirrel cage rotors to avoid premature damage caused by overload during startup. Please comply with the following requirements:

• The inertia of driven machinery (converted to motor speed) shall not exceed the allowable load inertia J value in technical datasheet
• The terminal voltage shall not drop below 85% of rated voltage during startup
• The load torque characteristic shall match typical pump or fan curve

Under above conditions, the motor allows two consecutive cold starts or one hot start, with natural stopping interval between starts. Extra restart attempts require a waiting period of at least one hour.

If the load inertia exceeds the specified value, frequent startup or heavy-load startup is required, please contact our engineering team for customized design to secure reliable startup performance.

Certifications

ISO9001, CCC, CE, compliant with GB755, IEC34-1

Packaging & Shipping

Power range: 0.55KW ~20000KW Voltage range: 380V ~13.8KV Shaft height: 80mm-1120mm

Our Advantages

Wide power coverage Superior starting performance Suitable for diverse industrial sectors and global supply High reliability to cut downtime and operational cost Customizable design to match special demands Witness FAT test available on-site or remotely online

Quality Control

In-process Inspection

All measuring instruments are calibrated annually.

Test Items

Every motor must complete full inspection before delivery, and a formal test report will be provided for each unit.

• Routine test: Winding DC resistance, insulation resistance, high voltage withstand test, no-load current, no-load power, no-load loss, three-phase current unbalance, locked rotor current, locked rotor torque, maximum torque, rotation direction, vibration (horizontal / vertical / axial), noise etc.
• Type test: Full load input power, full load current, stator loss, rotor loss, iron loss, mechanical loss, stray loss, slip ratio, winding temperature rise, bearing temperature, thermal insulation resistance, overload test, power factor, efficiency etc.

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.