| Application: | Industrial, Universal |
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| Operating Speed: | Constant Speed |
| Number of Stator: | Three-Phase |
| Species: | Yr Series Motors |
| Rotor Structure: | Squirrel-Cage |
| Casing Protection: | Open Type |
| Samples: |
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| Customization: |
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Suppliers with verified business licenses
I. Overv
YR series high-voltage three-phase asynchronous motor (frame size 355~1120mm) is a series of products developed by our company by introducing, absorbing and digesting 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 the company's over seventy years of experience in manufacturing medium and large high-voltage AC motors; the manufacturing of high-quality materials and scientific processing technology, so that it has 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, chip machines, 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 absorbing and digesting 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 multiplier, and the overload capacity of the motor is effectively guaranteed. Using FEM mechanical analysis method for structural design, and constantly verified by practice, can accurately apply boundary conditions to the established mechanical model, thus solving the accuracy of the use of materials, control the vibration and noise of the motor; at the same time, FEM mechanical analysis method is applicable to various cooling methods, high accuracy and intuitive air volume distribution, improve the level of temperature rise calculation in motor design, reduce ventilation losses, and improve 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.
5. The main junction box is placed on the right side of the motor (from the shaft drive end), 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.
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.
Standard seaworthy package for export
Plywood package or wooden fumigation package
Suitable for long distance transportation by sea
Located in Changsha, central China's Hunan province, Changli Electric Co., Ltd., a subsidiary of Changli Group, which was formally known as Changsha Motor Factory founded in 1946, is a leading electric motor manufacturer among Top 10 industrial electric motor manufacturers in China. With over 70 years' production experience and research and development capabilities, we can produce a wide range of motors. After years' development, we have several branches, offices and marketing centers around the country.
With an investment of 1094 million yuan, the company covers an area of 400mu (about 270, 000m2), has over 600 sets of precision production equipment, with annual production capacity of 8, 000 MW.
At present, we have over 350 employees, in which engineers and technicians accounting for 18%. With a strong technical research and development team and over 70 years' manufacturing experience, we can produce various kinds of low voltage motors, medium voltage motors and high voltage motors.
Our testing center is Hunan Medium and Small Sized Motors Quality Supervision Station, an authorized test station of China National Quality Inspection Center, is responsible for the quality supervision and sampling inspection of motor products of various motor manufacturers in Central and Southern China. We can test 40 series of high and low voltage motors.
Our products include standard motors, synchronous/asynchronous motors, high efficiency motors, premium efficiency motors, explosion proof motors, special motors, variable frequency speed regulation motors, ultra-high speed motors, submersible motors, wound rotor slip ring motors, permanent magnet motors, large-sized vertical circulating pump motors, etc.
Wide power range available
Excellent starting performance
Available to all industry segments and applications in global supply
Highest reliability to minimize operation cost from downtime
High flexibility with customizable design
Support to witness FAT on site/online
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 |
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 |
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 |
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.
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