YKS Asynchronous Motor with Air-Water Cooler

1. National Standard Interpretation of Model Letters (GB4831 Motor Model Standard)

1. Y: Three-phase squirrel-cage asynchronous motor, basic code for high-voltage motors
2. K: Enclosed structure with independent internal air circulation. The motor chamber is completely isolated from external dust, moisture and corrosive gas.
3. S: Air-water cooling structure equipped with air-water heat exchanger.

Overall Model Definition: YKS refers to enclosed high-voltage three-phase squirrel-cage asynchronous motor fitted with an air-water cooler on top.
Derivative Model Distinction: YKS adopts squirrel-cage rotor for direct start-up; YRKS adopts wound rotor with slip ring for speed regulation.

2. Working Principle of Air-Water Cooler (Cooling Standard IC81W / ICW81A)

It adopts a closed dual-circuit heat dissipation structure with complete separation of cold and hot media:

1. Internal air circulation: The built-in axial fan delivers hot air generated by stator and rotor operation to the top-mounted heat exchanger.
2. External water circulation: Industrial cooling water flows through copper tubes inside the heat exchanger. Heat from hot air is transferred to cooling water and continuously carried away by water circulation.
3. The fully sealed motor has no ventilation with the outside environment, featuring dustproof and moistureproof performance for harsh industrial working conditions.

3. Comparison of Cooling Types for Similar High-Voltage Motors

1. YKS (Air-Water Cooling, IC81W)
   High heat dissipation efficiency, low operating noise and higher power density at the same frame size. A circulating cooling water system is required. Widely applied to high-power high-voltage equipment including power plants, metallurgy, chemical industry, heavy-duty compressors and coal mills.
2. YKK (Air-Air Cooling, IC611)
   No water supply required, relying on external air for heat exchange. Its heat dissipation capacity is inferior to water cooling. Suitable for water-shortage factories and outdoor equipment.
3. Y Open-Type (IC01 Natural Ventilation)
   Simple structure with average heat dissipation. The open chamber is vulnerable to dust ingress, only applicable to low-power equipment in clean environments.

4. Core Product Parameters & Advantages

1. Applicable Voltage: 3kV, 6kV, 10kV high voltage
2. Power Range: 220kW ~ 3000kW and above
3. Frame Center Height: 355mm ~ 1000mm
4. Protection Class: IP44 / IP54 / IP55
5. Insulation Class: Class F insulation, supporting continuous full-load operation (S1 duty cycle)
6. Core Advantages: Water cooling delivers far better heat dissipation than air cooling for a more compact unit size; no large external cooling fan ensures lower running noise; fully enclosed housing resists dust, moisture and corrosion, ideal for severe heavy industrial environments.

5. Model Example Explanation

Model: YKS450-4
YKS: Enclosed high-voltage asynchronous motor with air-water cooling
450: Motor frame center height of 450mm
4: 4-pole motor, synchronous speed 1500r/min

6. Product Summary

YKS asynchronous motor with air-water cooler is an enclosed high-voltage three-phase squirrel-cage asynchronous motor integrated with an air-water heat exchanger. It dissipates heat via dual circulation of internal air and external cooling water, featuring high heat dissipation efficiency, excellent tightness and low operating noise. It is extensively used for high-power transmission equipment in power plants, steel plants, chemical plants, mines and other industries.

Short Tagline for Webpage

YKS High-Voltage Asynchronous Motor with Air-Water Cooling | High-Efficiency Water Cooling | Dedicated High-Power Drive Motor for Heavy Industry