Harmonic Filtering Products

CPT offers the harmonic filtering in both Passive harmonic filter (PHF) and Active harmonic filter (AHF).

Passive Tuned Harmonic Filter Banks

• Technical characteristic and Product scope
  • Voltage ranges available from 380 Vac to 33 kVac
  • Indoor and outdoor installation
  • Available filter types: Single-tuned, High-pass, C-type with single-step, multi-step and fixed banks
  • Equipped with all switching device, relay protection and control schematic diagram
  • Power factor control with auto/manual modes
  • Local & Remote selector switch
  • Surge arrester, Switch-disconnector and Earthing switch for safety reason is optional.
  • System study and summarize in a written report following:
    • System impedance scan
    • Filter impedance scans
  • Harmonic analysis results
  • Recommend filter/capacitor bank designing with all ratings of equipment
  • Expected harmonic filter currents
  • Voltage rise calculations based on energization of filter/capacitor bank stages

Active Filter Equipment

• Technical characteristic
  • Voltage ranges available from 380 Vac to 690 Vac
  • Selection of harmonics up to the 50th harmonic
  • Line current rating from 50 A and up to 450 A per module, Industrial cabinet design
  • Load balancing
  • Reactive power compensation
  • Free standing cubicle
  • Indoor installation
  • Bottom cable entry
  • Index of protection degree as IP 21
  • Advance HMI
  • Response time < 1 ms / 1 cycle