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    Zhufeng ACI Brand Soft Starter Cabinet Application in Guangzhou Municipal Sewage Station


       

    Sewage station is the concentration of rainwater, domestic sewage and industrial waste water. Whether the sewage will be discharged in time will be directly related to the life of the residents in Guangzhou City. Therefore, the technical transformation of the sewage station attaches great importance by the Guangzhou municipal government. Our company has developed a detailed reform program in accordance with the actual situation of municipal sewage station, whose benchmark is to reduce the cost of renovation of the sewage station as much as possible with reliable and stable system.

    Zhufeng Electric DLT-RQ Soft start control system has power supply automatic recognition function, concentrated function with bypass operation, online operation, power saving operation,timed shutdown function and convenient Installation and debugging. Soft starter cabinet will improve the comprehensive sewage discharge capacity of sewage station , the operation stability and reliability and discharge system in some emergency situations.

    DTL series soft starter has the international advanced level with micro electronic control technology, which can be divided into RQ1 and RQ2 two series.

    一、Functional characteristics of RQ1 series soft start:

    1、Limit the start time of the pressure drop, and reduce the current peak

    2、Soft start torque protects the transmission machinery;

    3、Smooth acceleration start, smooth deceleration stop (eliminate Water hammereffect)

    4、Auto bypass output.

    5、With a variety of protective functions, over current, over heat, missing phase, stealing stop protection, and so on.

    二、Functional characteristics of RQ2 series soft start:

    In addition to having all the functions of the RQ1 series, but also has the following functions:

    1、In order to adapt to different load, RQ2 series soft start has 11 kinds of starting methods:

    ① Steep hill

    ②Current limit

    ③ Steep hill+Current limit

    ④ Steep hill +Soft stop   

    ⑤ Current limit+Soft stop

    ⑥ Steep hill+Current limit+Soft stop

    ⑦ Sudden stop +Steep hill

    ⑧Sudden stop +Steep hill+Current limit

    ⑨  Sudden stop+Steep hill+Soft stop

    ⑩ Sudden stop +Steep hill +Current limit +Soft stop     

    ⑪jog

    2、 Online operation, real-time monitoring, with motor integrated protection.

    ①  Voltage phase interruption protection

    ②  Locked rotor protection

    ③Soft start over heat protection

    ④ Motor thermal overload protection  

    ⑤Current unbalance protection  

    ⑥Power supply low under-voltage protection



    3、Check each phase current and grid frequency, and display the real-time working temperature of the soft starter.

    4、Cooling fan start and stop by the temperature sensor control, can effectively reduce the failure rate of the machine.

    5、Provide RS485 interface external keyboard and remote control device and using the standard Modbus industrial field bus protocol.



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