The SP-B variable load static phase advancer 
 First, the range of applications 
 Reactive Site of the wound rotor induction motor variable load torque compensation equipment in the chemical, wood, sugar, steel, metallurgy, mining and other industries. Applicable to motor power 75 ~ 10000KW. 
 Second, the working principle and characteristics 
 Micro-computer and pay - AC frequency conversion technology, through the power electronic devices generate motor with frequency, the phase difference 90 °, the amplitude equivalent of a three-phase power supply in series with the rotor circuit to change the rotor side power factor, thereby changing the stator side power factor, reactive power compensation purposes. 
 Addition to the function of the ordinary stationary phase advancer, it also uses the principle of the closed-loop control, so that it can automatically track the load changes, load changes automatically adjust the amount of compensation to ensure that the compensation effect in terms of what kind of load conditions always to achieve the best compensation status. 
 ● the use of advanced cycloconverter - variable frequency technology and microcomputer control technology, high reliability; 
 ● enable the motor power factor is improved to the range between 0.95 and 0.99, more than 60% reduction in reactive power; 
 ● reduce the stator current 10 percent to 20 percent, reduce line losses, copper loss of 20% -30%; 
 ● The motor temperature rise was significantly reduced, greatly improving the efficiency and overload, prolonged motor life; 
 ● The compensation performance is far better than the capacitance compensation: not only improve the power factor of the line and, more importantly, to improve the power factor of the motor itself; 
 ● change the load conditions of the compensation performance is far superior to the ordinary static phase control: dual-CPU control parameters can be adjusted according to the load change in a timely manner, to achieve the purpose of dynamic compensation. So that the power factor is always in the optimal state; 
 ● due to increased efficiency and significant energy saving effect. 

 Third, the main technical parameters 
 A power factor: more than 0.95 (or more than 20%); 
 B, the motor stator current: 10% ~ 20% reduction; 
 Motor winding temperature rise: down 10% or more; 
 Protection class: IP20, IP30. 

 Fourth, the technical standards 
 ● The second part of the electronic control equipment; equipped with electronic devices, electronic control equipment GB3797-1989; 
 ● SP-B-type variable load into the phase detector Q/SK11-2006. 

 Fifth, the use of environmental conditions 
 1, ambient temperature: -40 ℃ ~ +50 ° C; 
 2, the relative humidity of air no more than 90%; 
 3, the altitude does not exceed 2000m (the altitude of 2000m above can be specially designed according to specific conditions); 
 4, ground tilt is not greater than 5 °; 
 5, the installation site without fire, explosion hazards, chemical corrosion and violent vibration. 
 Note: If the special conditions of use, in order with the manufacturer affirms that consultation.