Tunnel Construction Fan
Multi-Stage Variable Speed
Special axial flow fan for multi-stage variable speed for tunnel construction ventilation.
The motor uses multiple stages of the same body to achieve speed change. This series of fans consists of three magnetic poles of 4/6/8 class, which enables the fan to achieve three working speeds of 1480/980/740.
In the tunnel excavation construction, the multi-stage variable speed fan can save a lot of energy according to the use of the progress difference and the speed.
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