YRKK Series Wound-Rotor Three-Phase Asynchronous Medium- and High-Voltage Motor with Air-to-Air Cooler

1. Core Product Parameters of YRKK Series Medium & High-Voltage Wound Rotor Three-Phase Asynchronous Motor with Air-Air Cooler

1. Rated Voltage: 3kV, 6kV, 10kV, 50Hz
2. Power Range: 185kW ~ 2800kW
3. Frame Center Height: 355mm ~ 900mm
4. Cooling Type: IC611 air-air cooling with top air heat exchanger
5. Protection Class: IP44 / IP54 / IP55
6. Insulation Class: Class F, VPI vacuum impregnated windings, temperature rise per Class B standard
7. Duty Cycle: S1 continuous duty, 24-hour full-load operation
8. Rotor Structure: Wound rotor with slip ring & brush assembly, brush lifter optional
9. Bearing: Rolling bearings for small-medium power; sliding bearings for large models
10. Working Condition: Altitude ≤1000m, ambient temp -15℃~40℃, relative humidity ≤90%
11. Structure: Fully enclosed independent internal air circulation, isolated internal & external air

2. Core Product Advantages (Condensed)

1. Wound rotor features high starting torque and low inrush current for heavy loads; external resistors realize low-speed control without costly inverters.
2. Air-air cooling requires no cooling water system, no pipelines, leakage or scaling risks, applicable for outdoor and water-shortage plants.
3. Fully enclosed independent circulation plus IP55 rating blocks dust, moisture and mild corrosive gas, fit for mines, steel plants and power plants.
4. VPI impregnated stator & rotor windings avoid dust accumulation, extend insulation life and lower failure rate.
5. External slip ring & brush access panel for easy maintenance without full disassembly; rigid welded frame with low vibration.
6. Widely used in mine winches, belt conveyors, industrial fans and crushers, unrestricted by water supply with strong universality.

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