Harmonics From Generators Harmonics are, very simply put, high-frequency current and voltage distortions within your power system. Switching power supplies will run hot and may fail. Linear power supplies will not regulate well resulting in hum in audio or hum bars in video, with possible circuit degradation. The Noise introduces glitches and errors into executable programs and data files, corrupting your stored data. Personal computers are extremely sensitive to voltage harmonics, may reset due to undetected, momentary power loss.
Sags also reduce the efficiency and life span of the connected equipment.
Harmonic voltages and currents can cause interference effects that are detrimental to electronic equipment not designed to operate in the presence of significant harmonics. Modern power electronic equipment draws current in repetitive pulses from the AC power line. Other electronic equipment on the same distribution system may be disturbed by the consequent pulsations of voltage in the supply line. In addition, electromagnetic fields associated with the harmonic currents can interfere with telephone and other communication systems. Additional protection is required against power events that either deliver much lower or much greater levels of energy than the power supply can sustain.