Harmonic source :
The Magic Box of State Grid pavilion in Shanghai World Expo is the highlights of the exhibition, which consists of six sides’ large LED screen;
Solution:
Installed total four sets of LiveSine’s Active Power Filter (Model: ACTSine-150-4-F) for Magic Box
Results:
Total current harmonic distortion rate dropped from 80% – 95.7% to 4.5% – 8.4%
Harmonic inhibition rate > 95%
Power factor increased from 0.5 to 0.97 above
Neutral current decreased from 150A~350A to 12A~29A