1. Suitable place 
　　             High power consumption areas, AC 380V +/1 10% electric circuit
　　   Such as  mining enterprises ,petroleum, chemical industry, textile, machinery plant stores, hotel, office building, supermarket, squares , street lighting and so on.

2. Main function
　　    (1). Balance 3 phase electromagnetic
　　    (2). Reduce null line current, save power 10% ~ 15%
　　    (3). Reduce harmonic pollution, voltage fluctuation
　　    (4). Improve circuit working quality.

3. Working principle
　　    WSPJ power saving technique is mainly reconstruct low volatge power system,
using special windings’ inter-cross and combination, 3phase flux cross-linking complementation of the balaqne control transforming sytem to ensure the magnetic potential consitency among phases, so to reach 3 phase voltage balance reduction of null line current as kernel working principle.

　4. Technical date