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Pipework Pricelist The original use of three multi-grade wear resistant centrifugal pumps at underground coal mine central pump station. The supporting motor is 800 kW, 6 kV. Adopts the reactor to reduce voltage start, the problems include big start current and high operation noise, which over 85 dB that human work environment allows. The soft start and PLC are proposed to coordinate with the transformation of the drainage system. Then the remote control is realized, which meet the requirements of unattended central pump station. In order to underground central pump station improve the reliability and safety of underground water pump operation, it is necessary to carry out automatic transformation. The automatic control system of water pump unit mainly has four layers structure,which are field layer, monitoring layer, diagnosis layer and remote fault handling layer. website:http://www.kindratechina.com/pipework/