The high voltage water resistance starting cabinet is suitable for heavy-duty smooth soft starting of three-phase AC 50Hz, rated working voltage of 6~10Kv, rated power of 200Kw~10000Kw winding type or squirrel cage type AC asynchronous motor, especially for industrial and mining enterprises with unstable or low power grid voltage. At present, it is widely used in ball mill, elevator, crusher, compressor, fan, water pump and other heavy load starting.
Working principle: String a specially configured electrolyte into the rotor loop of the controlled winding motor as a resistor (the squirrel cage motor is in the stator), and by adjusting the concentration of the electrolyte and changing the distance between the two plates, the resistance value of the string resistor always meets the requirements of the mechanical characteristics of the motor on the string resistance value during the starting process. So that the motor can get the maximum starting torque and the minimum starting current under the condition of uniform speed increase, start the end, the electrical switch short-circuited the rotor circuit.
