Product Highlights

High Efficiency & Energy Saving: Adopts low-loss silicon steel sheets and optimized electromagnetic design to cut losses and boost power density. Robust Insulation Performance: Stator windings use Class F anti-corona insulation materials and undergo VPI vacuum pressure impregnation treatment for superior reliability. Multiple Protection Options: Available with IP23, IP44, IP54, IP55, IP56 and IPW24 protection grades to adapt to diverse operating environments. Wide Power Coverage: Rated power extends up to 25000kW, ideal for heavy-duty industrial equipment such as compressors and pumps. Versatile Mounting Types: Supports IMB3, IMB35, IMB5 and IMV1 configurations to fit various installation layouts. Global Proven Performance: Over 30 years of manufacturing experience, exported to more than 40 countries and compliant with IEC and GB standards. Optimized Squirrel Cage Rotor: Cast aluminum rotor or copper bar rotor with premium welding technology, stable operation and low failure risk. Strict Factory Testing: Every unit completes routine and type tests covering efficiency, vibration and noise inspection before shipment.

Product Attributes

Product Description

1. Product Overview

Our Y series high voltage three-phase induction motors were developed and introduced back in the 1980s, with over 30 years of continuous iteration. Benefiting from upgraded insulation materials, low-loss silicon steel sheets and repeated design optimization, the motor achieves reduced power loss and higher power density. Combining our 60-year experience in high voltage induction motor design and manufacturing, we have carried out the latest optimization to satisfy domestic and industrial market demands. Test results verify that this series reaches or approaches international advanced levels in both technical and economic performance. Mass-produced and widely supplied across China, these motors are also exported to over 40 countries and regions including Europe, America, Africa, Hong Kong and Macao, earning consistent positive feedback from end users.

Manufactured with premium raw materials and mature processing techniques, this series features high efficiency, energy saving, low vibration, stable operation and convenient installation and maintenance. Power grades, electrical characteristics, mounting dimensions and tolerances conform to GB 755 Rotating Electrical Machines — Ratings and Performance, IEC 60034-1 Rotating Electrical Machines — Ratings and Performance and relevant machinery industry standards.

Five enclosure protection grades are available: IP23, IP44, IP54, IP55 and IP56, complying with GB 4942.1 and IEC 60034-5. IP23 motors can be converted to IP44 (ducted ventilation) or IPW24 (weather-protected type). Custom protection grades are available upon request.

Three standard cooling methods are offered per GB/T 1993 and IEC 60034-6: IC01, IC611 and IC81W. Other cooling modes can be customized as required. The basic construction and mounting form is IMB3 (foot-mounted horizontal), in accordance with GB 997 and IEC 60034-7.

Based on rotor type, protection grade and cooling method, the series is divided into 8 sub-models:

Technical data and mounting dimensions for 10kV motors in all frame sizes can be adapted for 3kV, 10.5kV and 11kV variants.

2. Application

This high voltage induction motor is widely used to drive compressors, fans, water pumps, feeders, conveyors and other general machinery. It serves as the prime mover for mines, machinery plants, petrochemical facilities, power plants and other industrial and mining sites. For loads with large inertia such as blowers, coal mills, rolling mills, crushers and belt conveyors, customers need to provide relevant technical data and sign a technical agreement with us for dedicated design to guarantee reliable operation.

Standard operating conditions:

1. Altitude ≤ 1000 m above sea level
2. Maximum ambient temperature ≤ 40℃; minimum ambient temperature: -15℃ for rolling bearing motors, 5℃ for sliding bearing motors; YKS and YRKS minimum ambient temperature: 5℃
3. For YKS and YRKS water-cooled motors: cooling water inlet temperature 5℃ ~ 33℃
4. Monthly average maximum relative humidity ≤ 90%, with monthly average minimum temperature ≤ 25℃ in humid months
5. Power supply frequency: 50Hz ±1%
6. Operating voltage deviation: within ±5% of rated voltage
7. Duty: S1 continuous running

3. Structural Introduction

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

The motor adopts a popular box-type welded steel frame and end shield, featuring high rigidity and lightweight structure. After removing the protective cover or cooler, internal components are accessible for easy installation and maintenance. The stator adopts an external pressing structure. Stator windings use Class F anti-corona insulation materials with secure terminal binding. The whole stator undergoes VPI vacuum pressure impregnation with Class F solventless varnish, delivering 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 and slot fixation technology. Wound rotors also apply Class F insulation and VPI treatment.

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 equipped with on-line oil filling and draining fittings for lubrication maintenance without shutdown.

The main terminal box is sealed with IP54 protection. It is normally mounted on the non-drive side (viewed from shaft extension), and can be switched to the opposite side on request. Cable entry direction can be adjusted upward, downward, leftward or rightward. An independent grounding terminal is built inside the box.

4. Starting Instruction for Induction Motors (Y, YKS, YQF, YKK)

Finite element thermal and stress simulation is performed on squirrel cage rotors to avoid premature damage caused by starting overload. Customers need to comply with the following requirements:

1. Moment of inertia of driven equipment (converted to motor speed) shall not exceed the allowable load J value listed in technical datasheet
2. Terminal voltage during starting shall be no less than 85% of rated voltage

The above specifications are suitable for typical pump and fan load torque characteristics. Under qualified conditions, the motor allows two consecutive cold starts or one hot start, with natural coast-down interval between starts. Further restart is permitted after a one-hour cooling period.

If the load inertia exceeds the listed value, frequent starting is required, or heavy-load starting is needed, please contact our engineering team for customized design to ensure safe starting performance.

Detailed Photos

315kW Squirrel Cage High Voltage Three Phase Asynchronous AC Electric Motor 315kW Squirrel Cage High Voltage Three Phase Asynchronous AC Electric Motor 315kW Squirrel Cage High Voltage Three Phase Asynchronous AC Electric Motor

Product Parameters

Frame Size: H355–1120 Rated Voltage: 3kV, 3.3kV, 5.5kV, 6kV, 6.6kV, 10kV, 11kV, 13.8kV Poles: 2P, 4P, 6P, 8P, 10P, 12P, 14P, 16P Protection Degree: IP23, IPW24 Mounting: IMB3, IMB35, IMB5, IMV1 etc. Power Range: up to 25000kW Frequency: 50Hz, 60Hz Cooling Method: IC01

Certifications

315kW Squirrel Cage High Voltage Three Phase Asynchronous AC Electric Motor 315kW Squirrel Cage High Voltage Three Phase Asynchronous AC Electric Motor 315kW Squirrel Cage High Voltage Three Phase Asynchronous AC Electric Motor 315kW Squirrel Cage High Voltage Three Phase Asynchronous AC Electric Motor 315kW Squirrel Cage High Voltage Three Phase Asynchronous AC Electric Motor 315kW Squirrel Cage High Voltage Three Phase Asynchronous AC Electric Motor

Packaging & Shipping

315kW Squirrel Cage High Voltage Three Phase Asynchronous AC Electric Motor 315kW Squirrel Cage High Voltage Three Phase Asynchronous AC Electric Motor 315kW Squirrel Cage High Voltage Three Phase Asynchronous AC Electric Motor Standard seaworthy export packing Plywood case or fumigated wooden case Suitable for long-distance sea transportation

Quality Control

In-process Inspection

All measuring instruments are calibrated annually. Full-process inspection is implemented for every component.

Test Items

Every motor undergoes full inspection before delivery and comes with an official test report after passing.

Routine Test Items

• Three-phase DC resistance of windings
• 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
• Breakdown 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
• Additional stray loss
• Full-load slip
• Stator winding temperature rise
• Bearing temperature
• Hot insulation resistance
• Overload test
• Full-load power factor
• Efficiency

Warranty Period

Standard warranty: 12 months after commissioning or 18 months after shipment, whichever comes first. Extended warranty service is available upon request, please contact us for details.