Product Overview
YRKK series high voltage three-phase induction motor/Wound rotor slip ring induction motor is a classical product developed by our company. With the improvement of insulation material performance of the motor in recent years, the application of low consumed silicon steel sheet, the enhancement of level, and the optimization and improvement of design, which have the ability to reduce all kinds of consumptions of motors so as to increase the motor capacity. Combined with the experiences in designing and manufacturing of the high voltage three-phase induction motor in the past 70 years, our company has made the latest optimization and design once again to comply with the national and industrial demands. The tests have proved that, the new series of products have reached or been close to the globally advanced level no matter in terms of technical performance or in economic performance. The products have produced in a large volume and exported them to over 40 countries and regions, such as the Europe, America, Africa, Hong Kong and Macao, etc and all parts of China, and they have got the good appraisal form the users.
This series products adopt the high-quality materials, good manufacturing process, have the characteristics of high efficiency, energy saving, small vibration, reliable operating and convenient for mounting and maintenance.
The power grade, electric property, mounting dimensions and tolerance are coincident with national standard GB755 Rotating Electric Motor Rating and Property, International Electrical Committee standard IEC34-1 Rotating Electric Motor Rating and Property and machinery industry standards etc.
The enclosure protections of this series of motor include 5 types, i.e. IP23, IP44, IP54, IP55 and IP56 in accordance with the standard of the GB4942.1 and IEC34-5 Enclosure Protection Class of Rotating Electrical Machine. The IP23 motor can be changed to IP44 (pipeline ventilation) or IPW24 (climate protection type). If the users need other protection class, we may also provide relevant products.
There are 3 cooling methods of this series of motor, i.e., IC01, IC611 and IC81W in accordance with the standards of GB/T1993 and IEC34-6 Cooling Methods of Rotating Electrical Machine. If the users need other cooling methods, we may also provide relevant products.
The structure and mounting method of this series of motor is IMB3 (horizontal with footing), and complies with the specifications in GB997 and IEC 34-7 Motor Structure and Mounting Type Code.
This series of motor may be classified into 8 series in accordance with the rotor model, protection class and cooling method:
Model | Protection class | Cooling method | Rotor type | |
Squirrel cage rotor | Wound rotor | |||
Damp proof | IP23 | IC01 | Y series motor | YR series motor |
Climate protection type | IPW24 | IC01 | YQF series motor | YRQF series motor |
Air-water cooling enclosed type | IP44, IP54, IP55, IP56 | IC81W | YKS series motor | YRKS series motor |
Air-air cooling enclosed type | IP44, IP54, IP55, IP56 | IC611 | YKK series motor | YRKK series motor |
The technical data and external installation sizes of all series of 10kV motors in all sizes listed herein, may derive the 3kV, 10.5kV and 11kV motors in all dimensions.
Application Scope
This series of motor may be used for driving all kinds of Overview machines such as the compressor, ventilation fan, water pump, stock-removing machine, transportation machines and other mechanical equipment, and are applied as the prime mover in all industrial and mining enterprises such as the mine, machinery, petrochemical industry and power plant, etc. If the users place an order for the motors that are used for driving the machines with huge rotary inertia such as the blower, coal grinder, rolling machine, crusher, belt machine, etc, they shall provide us with relevant technical data, sign the technical agreement with us as the basis for specific design of motor to ensure the reliable operation of motor.
Certifications
We have obtained such certifications as CE, CCC, EAC, ISO 9001, ISO 14001, ISO45001, etc. Our motor series comply with IEC, NEMA, GOST, ISO, IEEE, JIS, AS standards.
Applications:
Pumps, Fans, Blowers, Bending Rolls, Boilers, Compressors, Hoisters, Conveyers, Crusher-Shredders, Forging Press, Extruders, Rolling Mill &Steel Plant Equipment, Mills, Cutting, Saws, Turbines, Thrusters, Sheet Metal Presses.
Customers
Widely recognized for excellence in mining, power plant, steel mill, metallurgy, paper, chemicals, cement machinery, electric power, and water conservancy and other sectors, our motors are exported to over 40 countries and regions, including Germany, the US, Italy, Mexico, Russia, Belarus, Turkey, Hungary, Iran, Iraq, Sudan, Indonesia, India, Pakistan, Vietnam, Slovakia, Serbia, Malaysia, Thailand, the Philippines, Venezuela, etc.
Raw Materials
Frame: Cast iron, steel
Stator: Copper
Rotor: Copper/aluminum
Shaft: ASTM1045 Steel
Bearing: SKF, FAG or equivalent Chinese brands
In-process Inspection/ Quality Control
All the measuring apparatus and instruments are calibrated each year.
Quality inspection and control for each item
Name | Inspection item |
Coil | 1. Physical and chemical tests for raw materials |
2. Coil winding process inspection | |
3. Winding dimension inspection | |
Iron Core | 1. Physical and chemical test report for silicon steel sheet material |
2. Lamination burrs and paint film inspection | |
3. Dimensional inspection of laminated steel sheet | |
Frame | 1.Cold welding parts conformity certificate |
2. Finish machining inspection | |
Rotor | 1. Rotor core lamination inspection |
2. Conducting bar welding | |
3. Check the material, appearance, conductivity and size of the conducting bar end ring | |
4. Check the fastening of the conducting bars in the slots | |
5. Dimensional check, including iron core outer diameter | |
6. Dynamic balance correction | |
Shaft | 1. Raw material , annealing check |
2 Finish machining check | |
Stator | 1. Iron core compactness check |
2. Check iron core length and section length | |
3 Inserting winding check | |
4. Iron consumption check | |
Assembly | 1. Plain bearing size and surface quality check |
2. Check the size of the air gap, the coincidence of the axial centerline of the stator and rotor core, the gap of inner fan and windshield | |
3 Cleaning check inside the motor | |
4 Shaft center height and installation size check | |
Test | 1. Routine test |
2. Type test |
Test Items
Each motor must be tested before leaving the factory. Only all the items are qualified, can the motor be delivered. Each motor will have a test report.
Routine test items Winding three-phase DC resistance Winding insulation resistance to ground Winding withstand voltage test No-load current No-load power No-load loss Three-phase no-load current imbalance 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 Other losses Full-load slip ratio Stator winding temperature rise Bearing temperature Thermal winding insulation resistance Overload test Full-load power factor Efficiency ... |
Paintings
Standard painting thickness: 120microns (40 micron priming paint + 80micron finish paint)
With professional certified painters, we can mix and paint any color according to your requirements.
Packaging
Standard seaworthy package for export
Plywood package or wooden fumigation package
Suitable for long distance transportation by sea
Warranty Period
Standard warranty: 12 months after commissioning, or 18 months after delivery, whichever comes first.
If you would like to extend the warranty period, please contact us for details.
Technical Parameters
Power: 250KW to 15000KW
Frequency: 50Hz
Voltage: 690V, 3300V to 13200V
Cooling: IC611, IC616, IC666
Protection: IP56, P55, IP54, IP44
