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| Item | Specification | Item | Specification |
|---|---|---|---|
| Model NO. | YKS710-4-7000KW-6KV | Number of Stator | Three-Phase |
| Rotor Structure | Squirrel-Cage | Casing Protection | Closed Type |
| Number of Poles | 2p-16p | Starting Mode | Direct on-line Starting |
| Certification | ISO9001, CCC, CE | Rated Power | 4000kw |
| Frequency | 50Hz/60Hz | Voltage | 6kv, 6.6kv, 10kv, 11kv, 13.2kv, 13.8kv |
| Protection | IP54 | Cooling Method | IC81W |
| Mounting | IMB3 | Rotation Direction | Both |
| Insulation | F Class | Color | Customizable |
| Duty Type | S1 | Standard | IEC |
| Temperature Rise | B Class | Ambient Temperature | Max 40℃ |
| Altitude Above Sea Level | ≤1000m | Bearing | SKF Bearing |
| Transport Package | Standard Seaworthy Packing | Trademark | CHANGLI |
| Origin | China | HS Code | 8501530090 |
| Production Capacity | 500000 sets per year | - | - |
Y, YKS, YQF, YKK, YR, YRKS, YRQF and YRKK series high voltage three-phase induction motors were introduced and developed by our company back in the 1980s, with more than 30 years of development history. In recent years, continuous upgrades of insulation materials, adoption of low-loss silicon steel sheets, grade upgrades and design optimization effectively cut motor losses and increase power capacity. Drawing on our 60 years of experience in high voltage induction motor design and manufacturing, we completed the latest round of optimization to meet domestic and industrial market demands. Test results show that this new series reaches or approaches global advanced levels in both technical and economic performance. The motors are mass-produced and exported to over 20 countries and regions including Europe, America, Africa, Hong Kong and Macao, and widely used across China, earning consistent positive feedback from end users.
Manufactured with premium raw materials and mature production processes, this motor series features high efficiency, energy saving, low vibration, stable operation and simple installation and maintenance.
Power grades, electrical performance, mounting dimensions and tolerances comply with GB755 Rotating Electric Machines – Ratings and Performance, IEC 60034-1 Rotating Electric Machines – Ratings and Performance and relevant machinery industry standards.
In accordance with GB4942.1 and IEC 60034-5, the enclosure protection grades available include IP23, IP44, IP54, IP55 and IP56. IP23 motors can be converted to IP44 (piped ventilation) or IPW24 (weather protected type). Custom protection grades are available upon request.
Cooling types follow GB/T1993 and IEC 60034-6, covering IC01, IC611 and IC81W. Other cooling configurations can be supplied as required.
The standard construction and mounting form is IMB3 (horizontal foot-mounted), conforming to GB997 and IEC 60034-7.
The series is divided into 8 sub-models based on rotor type, protection class and cooling method:
| Model | Protection Class | Cooling Method | Squirrel Cage Rotor | Wound Rotor |
|---|---|---|---|---|
| Weather Protected | IP23 | IC01 | Y Series | YR Series |
| Climate Protection Type | IPW24 | IC01 | YQF Series | YRQF Series |
| Air-Water Cooled Enclosed | IP44, IP54, IP55, IP56 | IC81W | YKS Series | YRKS Series |
| Air-Air Cooled Enclosed | IP44, IP54, IP55, IP56 | IC611 | YKK Series | YRKK Series |
Technical data and installation dimensions of 10kV motors in this range can be adapted for 3kV, 10.5kV and 11kV versions of the same frame size.
This motor series drives general equipment such as compressors, fans, water pumps, feeders and conveyors. It serves as the prime mover for mines, machinery plants, petrochemical facilities, power plants and other industrial and mining sites.
For heavy inertia loads including blowers, coal mills, rolling mills, crushers and belt conveyors, customers shall provide complete technical data and sign a technical agreement for customized design to guarantee reliable operation.
Y and YR are the base models with IP23 protection and IC01 cooling. Derivative types include YKS (air-water cooling), YQF (weather protected), YKK (air-air cooling), YRKS, YRQF and YRKK.
The motor adopts internationally popular box-type construction. Frame and end shields are steel plate welded for high rigidity and low weight. Cooler or protective cover can be removed for easy inspection, installation and maintenance.
The stator uses outer pressing structure. Stator windings adopt F-class insulation and anti-corona materials, with reliable special binding for terminal fixing. The whole stator goes through VPI vacuum pressure impregnation with solventless F-class varnish, delivering outstanding insulation, moisture resistance and shock resistance.
Most squirrel cage rotors are cast aluminum type for reliable operation without rotor bar breakage. Copper bar squirrel cage rotors use advanced welding and slot fastening technology. Wound rotors are fitted with F-class insulation and also treated by VPI.
Bearings are either rolling bearings or sliding bearings, selected according to motor power and speed. Base bearing protection grade is IP44 and will be upgraded for higher enclosure protection requirements.
Rolling bearing version is equipped with on-line oil filling and draining structure, allowing lubrication maintenance without shutdown.
The main terminal box is sealed at IP54. It is mounted on the right side (viewed from shaft extension) and can be switched to the left side on request. Cable entry direction can be adjusted to top, bottom, left or right. Independent grounding terminal is built inside the box.
Rotor thermal and stress simulation is completed by computer calculation to avoid early damage caused by overheating during startup. Please follow the requirements below:
Under above conditions, the motor allows two consecutive cold starts or one hot start, with natural coast-down between attempts. Extra restart attempts require a 1-hour waiting period.
Contact us for customized design if driven inertia exceeds the limit, frequent starting or heavy-load startup is required.
ISO9001, CCC, CE
Standard seaworthy export packing
Available power range: 0.55KW ~20000KW
Available voltage range: 380V ~13.8KV
Shaft height: 80mm ~1120mm
All measuring instruments are calibrated annually. Each component goes through strict inspection as below:
| Part | Inspection Items |
|---|---|
| Coil | 1. Raw material physical & chemical test2. Winding process audit3. Winding dimension check |
| Iron Core | 1. Silicon steel material test report2. Lamination burr and paint film inspection3. Stack dimension check |
| Frame | 1. Welded component qualification certificate2. Finishing dimension inspection |
| Rotor | 1. Core stacking inspection2. Rotor bar welding inspection3. Bar & end ring material, appearance, conductivity and dimension test4. Slot bar fastening check5. Outer diameter and core dimension inspection6. Dynamic balancing |
| Shaft | 1. Raw material and annealing inspection2. Finishing inspection |
| Stator | 1. Core compression check2. Core length and segment length check3. Winding insertion inspection4. Iron loss test |
| Assembly | 1. Plain bearing dimension and surface quality check2. Air gap, stator-rotor alignment, fan and shroud clearance check3. Internal cleaning inspection4. Shaft center height and mounting dimension verification |
| Test | 1. Routine test2. Type test |
Every motor is fully tested before shipment and supplied with an official test report after passing.
Standard warranty: 12 months after commissioning or 18 months after delivery, whichever comes first. Extended warranty can be negotiated upon request.
Founded in 1946, Changsha Changli Electric Co., Ltd. is a leading electric motor factory and a TOP 10 electric motor manufacturer in China. We manufacture and deliver asynchronous motors with squirrel cage or slip ring rotors, synchronous motors, explosion proof motors, tailor-made motors, etc. Power output: 0.55KW to 20MW Voltage: 380V to 13.8KV Frame size: 80mm to 1120mm
