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EMHEATER frequency inverter applied in the the xiaoxiangling tunnel constructed by China Railway Tunnel Group
Publish:China EM Technology Limited  Time:2016-09-19

EMHEATER frequency inverter applied in the the xiaoxiangling tunnel constructed by China Railway Tunnel Group

China Railway Tunnel Group is top 500 enterprises and top 500 brands in the world, is the largest Enterprise Group that expert in the field of tunnel and underground engineering in China.
In the Xiaoxiangling tunnel system constructed by China Railway Tunnel Group ,the frequency inverter of Shenzhen EMHEATER Technology Limited has participated and play its important role stably in the whole system.Three-speed convection fan has the function of industrial blower,exhaust,transportation and etc in the tunnel,and in this suitationmit‘s the best choice to installing frequency inverter to control fan.

Here below parts of pictiures in partical application:






 

These are the perfect application of  the inverter and three-speed convection fan, let‘s look at the benefits of using inverter here. 

1. In general, three-speed convection fan chang winding connection mode of the motor, and then change the speed of motor, but it need to increase many control diagram, and also increase  the number of points of failure correspondingly, and the direct start way has a big impact on motor, reducing the using life of the motor. After the installation, reducing the impact on motor greatly, extend the service life of the motor.
2. Using variable speed regulation can reduce the control element, it can also change the speed of the motor according to the pressure automatically.
3. Because fan starting for a long time , large starting current of the motor ,it has mechanical impact force on motor, after installation of  inverter, it can achieve soft start smoothy and soft brake.
4. After the adjustable speed drive,it can greatly reduce the wear on the fan impeller, reducing fan vibration, inspection, maintenance cost and  time.
5.It can also reduce energy consumption, improve industrial energy efficiency, and achieve industrial automation better.