Delta's Active Power Filter APF2000 is the key to a clean grid for more efficient production. Today's automation equipment gives us more convenience and higher production efficiency which means cost savings. However, it can also bring significant power distortion problems that can lead to energy loss, increasing costs and power quality issues.

Power quality is a major influence on power efficiency. A clean and efficient power system normally generates a sinusoidal current waveform. However, the electric equipment used in today's industrial automation industry generates non-sinusoidal currents that cause power quality problems. Voltage or current distortion, reactive power impact and unbalanced loads, are common problems that lower power reliability and power efficiency and also increase operation costs. Major concerns in the industrial automation industry are how to improve power quality and how to manage power grids.

Delta's APF2000 is equipped with the industry's highest standard 32-bit digital microprocessor. It instantly compensates for all types of harmonics for ultimate power quality improvement. Perfect harmonic distortion control reduces power loss and heat generation. The APF2000 is a compact design for efficient use of space. It has a 65,536-color TFT HMI for realistic images and a vivid display. The ultimate mission of Delta's APF2000 is to provide improved power quality, lower energy loss and lower maintenance costs.



Delta's Active Power Filter APF2000 uses a current transformer to monitor load current and filter harmonics in real-time to maintain a clean line current. It injects active power with the same frequency but with reverse phase to the network of components. It provides leading and lagging reactive current in real time to improve the power factor and compensate for reactive power.



  • Excellent filtering result and provides harmonics compensation up to 90% 
  • Compensation for harmonic current, reactive power, power factor and load balancing 
  • Advanced Modular Design: Safe, Reliable, Labor-saving 
  • Provides diversified communication network and optional fieldbus cards



  • Metallurgy and petrochemicals industries: rectifiers, converters, rolling mills, electric arc furnaces, medium frequency furnaces, inverters
  • Chemical and electrolysis industries: rectifiers, calcium carbide furnaces, electric soldering, inverters
  • Mechanical industries: rectifiers, rolling mills, inverters, electric arc equipment
  • Metal, paper, plastic processing and textile industries: rectifiers, rolling mills, inverters, electric arc furnaces, electric furnaces
  • Transportation industries: rectifiers and inverters for electric vehicles, electric motorcycles and metro systems
  • Automobile manufacturing industry: soldering equipment, car painting equipment, battery chargers and inverters
  • Telecommunication, medical and construction industries: Server stations, EPS, UPE, converters, chargers, inverters
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