Harmonic Analysis

Description

Why Harmonics are Created?

  • Created by non-linear loads that draw current in abrupt pulses and generate bad current.
  • Equipments that create harmonics include
  • Variable Frequency Drives (VFD) - Motors,
  • Welding Machines
  • Equipments with adjustable speed drives
  • Conveyor systems
  • Equipment using SMPS
  • Battery chargers, UPS
  • Personal Computer, Laptops
  • Medical Equipments etc

Symptoms of Harmonics

  • Overheating in Neutral Conductors / Transformers
  • Nuisance tripping of circuit breakers
  • Equipment malfunctioning
  • Current surges damaging capacitors and fuses
  • Frequent motor / VFD failures
  • PLC Failures
  • Premature failures of capacitor banks

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