Ykk630-4-2500kw High Voltage Three-Phase Asynchronous Electric Motor with Air to Air Cooler

• Application: Industrial, Universal
• Operating Speed: Constant Speed
• Number of Stator: Three-Phase
• Species: Y, Y2 Series Three-Phase
• Rotor Structure: Squirrel-Cage
• Casing Protection: Closed Type
• Model NO.: YKK630-4-2500KW
• Number of Poles: 2-12
• Starting Mode: Direct on-line Starting
• Certification: ISO9001, CCC, CE
• Brand: Changli
• Rated Power: up to 25000kw
• Frequency: 50Hz, 60Hz
• Voltage: 3.3kv, 6kv, 6.6kv, 10kv, 11kv
• Protection: IP44, IP54, IP55, IP56
• Cooling Method: IC611, IC616,IC666
• Mounting: Imb3, Imb5, Imb35
• Rotation Direction: Cw/Ccw
• Transport Package: Standard Seaworthy Packing
• Trademark: CHANGLI
• Origin: China
• HS Code: 8501530090
• Production Capacity: 500000

Product Description

I. Product Description 

Y, YKK series high-voltage three-phase asynchronous motors (frame size 355~1120mm) are a series of products developed by our company by introducing advanced technology at home and abroad, adopting modern advanced field analysis technology for electromagnetic calculation, and making fine calculation and optimal design for various losses, wind resistance and strength of each component of the motor. The series of products are developed through mature and reliable design and production system, combined with more than seventy years of experience in manufacturing medium and large high-voltage AC motors; with high-quality materials and scientific processing technology in manufacturing, the motors have the advantages of high efficiency, low noise, low vibration, high reliability and easy installation and maintenance.
The series products are mainly used in general mechanical equipment such as fans, pumps, compressors, crushers, scrap shredders, belt conveyors, transportation machinery or other similar mechanical equipment in petroleum, chemical, coal, power station, metallurgy, transportation, textile, pharmaceutical and grain processing industries.

II. Advantages and Characteristics

1. After introducing and absorbing the advanced technology at home and abroad, the company uses the "field and circuit " combination method for electromagnetic design of this series, which improves the calculation accuracy of electromagnetism and can provide accurate maximum torque multiplies, and the overload capacity of the motor can be effectively guaranteed. We use FEM mechanical analysis method for structural design, and constantly verify by practice, can accurately apply boundary conditions to the established mechanical model, thus solving the accuracy of the use of materials, controlling the level of vibration and noise of the motor; at the same time, FEM mechanical analysis method is applicable to various cooling methods, with high accuracy and intuitive air volume distribution, improving the level of temperature rise calculation in motor design, reducing ventilation losses, and improving motor efficiency.

2. This series of motor adopts box structure, the base is made of steel plate welded into box shape, light weight and good rigidity, the top of the motor is installed with protective top cover or cooler, which is convenient for motor heat dissipation, installation and maintenance.
3. The stator adopts external press-fit structure, and the stator and rotor punching sheets are made of low-loss non-oriented cold-rolled silicon steel sheets. The stator winding is made of class F insulation material, which has strong insulation voltage resistance and anti-corona ability, and the winding ends are reliably fixed and tied, and treated with vacuum pressure impregnation solvent-free paint (VPI), so the motor has excellent and reliable insulation performance, high mechanical strength, strong moisture resistance and long service life.
4. The bearings are in the form of rolling bearings and sliding bearings, depending on the power and speed of the motor, and the protection level is IP00, IP23, IP44, IP54 or IP55. The rolling bearing is equipped with a non-stop oil filling and draining device, making it easy for users to use and maintain.
5. The main junction box is placed on the right side of the motor (from the DE), or on the left side according to the user's requirements, and there are separate grounding terminals inside and outside the junction box.
6. According to the user's requirement, temperature measuring devices can be added to the important parts such as stator winding and bearing to facilitate on-site observation and remote monitoring to ensure safe and reliable operation of the motor.
 

FACTORY PHOTOS 



 

Raw Materials
Frame: Cast iron, steel
Stator: Copper
Rotor: Copper/aluminum 
Shaft:  45# Steel
Bearing: SKF, or equivalent 

In-process Inspection/ Quality Control
All the measuring apparatus and instruments are calibrated each year.
Quality control for each item

Part	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	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. After the motor is qualified, the motor can be shipped out. 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 and 80micron finish paint)
With professional painters, we can mix and paint any color according to your choice.

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.