LCL Filters

LCL Type Harmonic Filter Modules are used to filter out the input current harmonics of Motor Drives that have six-pulse diode/thyristor rectifiers, and where harmonic current distortion exceeds the standard defined limits.




  • Meets IEEE Std.519-2014
  • Eliminates Low Order Harmonics
  • Improves System Efficiency and Reliability
  • Increases the Overall System Power Factor
  • Extends Equipment Life
  • Low-Loss Design
  • Easy-to-Install
  • Resonance-Free Operation with Line Side
  • Suitable for Multiple Motor Drive Operations
  • Cost Effective Solution


Typical Applications


  • Oil & Gas Industry
  • Water and Waste Water
  • HVAC
  • Textiles
  • Commercial Facilities
  • Data Centers
  • Pulp & Paper
  • Metal Fabrication
  • Electroplating
  • Elevators and Escalators
  • Industrial Rectifiers
  • Induction Furnaces



Technical Specifications
Motor drive input power ratings 0.3-630 kW (parallel operation for higher power ratings)
Operation voltages Standard voltages up to 690V
Operating frequencies 50Hz - 60 Hz
Rated currents 1A - 4250A
Input current distortion < 8% @ full load
Voltage regulation < 5% (from no-load to full-load)
Efficiency >99% @ rated load
Overload capability 1.6 x rated current (1 min/hour)
Protection degree IP20 (upper protection degrees are upon request)
Ambient temperature -30°C to +50°C
Altitude < 1000m
Application standards IEC 60076 for reactors, IEC 60871 for capacitors, IEEE std.519-2014 for harmonics