| Customization: | Available |
|---|---|
| Application: | Industrial, Universal |
| Operating Speed: | Constant Speed |
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Audited Supplier Audited by an independent third-party inspection agency
Located in Changsha, Hunan province, Changli Electric Co., Ltd. (formally known as Changsha Motor Factory, which was founded in 1946), is a leading electric motor manufacturer among Top 10 industrial electric motor manufacturers in China.
With an investment of 1094 million yuan, the company covers an area of about 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.
Power range: 0.55KW ~20,000KW
Voltage range: 380V to 13.8KV
Shaft height: 80mm-1120mm
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 |
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 ... |
Warranty Period
Standard warranty: 12 months after commissioning, or 18 months after delivery, whichever comes first.
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