SYD3 series of high-voltage cage motor liquid resistance starter cabinet 
 First, the range of applications 
 Applicable to 3KV, 6KV, 10KV power range 32000KW even more high-power high-voltage squirrel cage (synchronous) motor buck soft start, soft stop and protection. The device is widely used in building materials, metallurgy, petroleum, pharmaceutical, water conservancy, electric power, chemical industry, fans, pumps, compressor start. 
 Second, the principle 

 SYD3 series of high-voltage squirrel cage (synchronous) power electro-hydraulic starter is the use of special media in aqueous solution as a resistor, the introduction of a specially designed high-pressure liquid resistance box plate for electrodes in series with the stator circuit, the motor starter, by a small power servo motor to drive the plates move to change the relative position of the plate (string of the stator circuit) liquid resistance from big to small to make the Promise change, so that the motor with low current smooth start. 
 Third, performance characteristics 
 A constant current soft starter performance: the process of starting currents remain the same, 1.5-3.5 times the rated current; 
 2, starting when the power factor is high and approximately constant, generally above 0.75; 
 , Heat capacity, can start 3-5, will not be burned; 
 4, starting smooth: the motor starting torque from small to large and gradually increased, so that machinery and equipment to a smooth start, no impact, no whistle, and the mechanical equipment is smooth across the resonance speed, the equipment from harm; 
 5 little impact on the grid, starting when the grid voltage drop less than 5%; 
 6, with a sound alarm function and motor protection function, safe and reliable; 
 7, the structure is simple, reliable, installation and maintenance;