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Application case of high voltage frequency converter fan in tunnel
A high-voltage frequency converter was deployed at a major fan manufacturer, a primary national standard drafting organization, to implement a ventilation system for a state-owned enterprise's large-scale railway tunnel project. The project supplied a complete set of 3.4-meter diameter axial flow fans to resolve ventilation challenges during tunnel construction. The solution required two high-voltage switchgear units and two frequency conversion systems, with the motor's rated power being 10kV 315kW. Project overview: Altitude ≤1500 meters, high humidity and dust levels within the tunnel. The project is currently under construction.
In combination with the high altitude, high humidity and dust conditions of the customer's project site, we propose the following suggestions to the customer:
The high voltage inverter is selected according to 10KV 400KW, and adopts three functions (moisture-proof, dust-proof and corrosion-proof). The key components are imported brands, such as IGBT, rectifier bridge, capacitor, PLC, etc.
The high-voltage switchgear is selected according to KYN28, the high-voltage vacuum circuit breaker is selected by Schneider Baoguang, and the motor protection is adopted by Xuji.
Due to the client's urgent need for ventilation during construction, we prioritized timely delivery. Adhering to our commitment to solving customer problems and addressing their pressing needs, the high-voltage frequency converter and switchgear arrived during the National Day holiday. Our after-sales engineers voluntarily gave up their rest to work overtime, collaborating with the client to complete power-on debugging. The system was successfully put into operation on the first attempt, ensuring the ventilation project for the tunnel engineering was completed without issues. This achievement earned unanimous praise from both the client and the owner.
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