What Are Harmonics? Their Effects on Businesses

Harmonics are unwanted components occurring at frequencies that are exact multiples of the grid frequency, distorting the voltage and current waveform. Many modern devices generate harmonics, chiefly variable-frequency drives, UPS systems and LED lighting.

High harmonic levels can cause overheating in transformers and cables, premature failure of compensation capacitors, malfunction of sensitive electronic devices, and unnecessary energy losses.

These risks can be detected through THD (Total Harmonic Distortion) measurement and prevented with passive or active filter solutions. Regular harmonic measurement extends equipment lifetime and increases energy efficiency in the long run.