| Application: | Industrial |
|---|---|
| Operating Speed: | High Speed |
| Number of Stator: | Three-Phase |
| Species: | Yjs Series |
| Rotor Structure: | Winding Type |
| Casing Protection: | Explosion-Proof Type |
| Customization: |
|---|
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The 6KV/10KV motor series YRKK (center height 355-1,000) is a kind of 3-phase wound-rotor asynchronous motor produced in line with technical specifications in JB/T T10314.2-2002, with a protection class IP44 or IP54 and a cooling mode IC611.
The series YRKK has many advantages, such as high efficiency, energy conservation, low noise, slight vibration, light weight, reliable performance and installation & maintenance convenience.
Series YRKK can offer a big starting torque even under a small starting current; but its feeder line capacity is not big enough to start squirrel-cage rotor motor; its starting time is long and it needs frequent starting; and it is suitable for cases needed for small-range speed adjustment, e.g., to drive winch, rolling mill and drawbench.
This series YRKK has a structuring and mounting mode IMB3, whose ratings mean the values based on continuous duty (S1), rated frequency 50 HZ, rated voltage 6KV/10KV; for other voltage classes or special requirements could be discussed separately.
The motor uses box-type structure. The frame is made of steel sheet welding, featured with light weight and fair rigidity. Enclosed air cooler is mounted at top of motor, featured as convenient reassembling and favorable for maintenance and repair of motor. The slip-ring cover has viewing window to observe operating condition.
The stator uses external press fitting structure. The stator winding uses Class F insulation material. The end has reliable fixing and binding. Multiple inter-turn impulse voltage tests and grounding high-voltage holding tests have been conducted in manufacturing procedure. And it is processed with internationally advanced vacuum pressure impregnation (VPI) solvent free varnish equipment and process. Thus the motor has excellent and reliable insulating property, fair mechanical strength and strong moisture-proof capacity.
The motor uses box-type structure. The frame is made of steel sheet welding, featured with light weight and fair rigidity. Enclosed air cooler is mounted at top of motor, featured as convenient reassembling and favorable for maintenance and repair of motor. The slip-ring cover has viewing window to observe operating condition.
Wound rotor uses Class F insulation material.
The bearings have antifriction bearings and sliding bearings to be determined by power and rotating speed of motor. The rated power frequency of motor is 50 Hz, rated voltage as 6000 V, and primary type of protection grade as IP44. According to negotiation, the enclosure protection grade of collecting ring may be IP22 or IP23. We can also provide motors of other voltage, frequency protection grade as per ordering requirements.
The bearings have antifriction bearings and sliding bearings to be determined by power and rotating speed of motor. The rated power frequency of motor is 50 Hz, rated voltage as 6000 V, and primary type of protection grade as IP44. According to negotiation, the enclosure protection grade of collecting ring may be IP22 or IP23. We can also provide motors of other voltage, frequency protection grade as per ordering requirements.
The motors can be used to drive various machines, e.g. compressor, pump, crushers, stock-removing machine, transport machines and other machines as prime engines in various industrial and mining enterprises, e.g. mines, engineering industry, petrochemical industry and power plant. Purpose and technical requirements shall be indicated in ordering motor for ventilating fan, coal grinding mill, iron-rolling mill and hoister so as to use special design for reliable operation.
PRODUCT PARAETERS
Center height range: H355 ~ 1000mm
Power range: 220kW ~ 10000kW
Number of poles: 2/4/6/8/10/12
Rated voltage: 6000V/6600V/10000V
Rated frequency: 50HZ/60HZ
Protection level: IP54 or IP55
Insulation class: F
Work system: S1 (continuous)
Cooling method: IC611/IC616
Installation form: IMB3
Motor connection: Y (three outlet terminals in the junction box, the junction box from the extension of the spindle is located on the right side of the base)
Altitude: no more than 1000m
This type of motor is suitable for use in environments where the ambient air temperature does not exceed 40 ° C and there is no serious dust, the minimum ambient air temperature is -15 ° C, and there is no corrosive and explosive gas in the air (which can also be made into a damp heat or high-altitude motor).
Comparison of different series Big Size Three Phase High Voltage Induction AC motors
No. |
Squirrel-cage motor | Y JS | YKK | YKS | Y2 YJS |
| Slip ring motor | YR JR JR2 | YRKK | YRKS | YR2 YR3 | |
| 1 | Structure | Box-type construction, made up of steel plates welded with each other | Compact struction | ||
| 2 | Cooling method | IC01 or (IC11, IC21, IC31) | IC611 or IC616 | IC81W | IC411 |
| 3 | Natural ventilation, with top mounted protection cover | With top mounted air-air cooler | With top mounted air-water cooler | ||
| 4 | Protection type | IP23 | IP44 or IP54 | IP44 or IP54 | IP54 |
| 5 | Insulation | F | |||
| 6 | Mounting arrangement | IMB3 | |||
| 7 | Voltage available | 3 kv, 3.3 kv; 6 kv, 6.3 Kv 6.6 kv; 10 kv, 11 kv | |||
| 8 | Frequency available | 50 Hz , 60 Hz | |||
FEATURE OF PRODUCT
The high-voltage wound rotor slip ring motor can increase the large starting torque at a small starting current. The motor is suitable for applications where the capacity of the feeder line is insufficient to start the squirrel-cage rotor, the starting time is long, the starting is frequent, and the small-range speed regulation is required. This series of motors has the advantages of high efficiency, energy saving, low noise, low vibration, light weight, reliable performance, convenient installation and maintenance.
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