POWER QUALITY. High frequency disturbances
High frequency disturbances are caused by the sparks generated in the AC commutator motors, the “corona effect” on the high voltage lines, the igniters of luminous signs and burners, and by the magnetic fields irradiated by radio and TV stations. Line disturbances,...
POWER QUALITY. Variable Harmonics
The voltage and current harmonics superimposed on the fundamental have combined effects on the equipment and devices connected to the electrical network. Some non-linear loads determine a harmonic content distributed over a very wide spectrum, therefore variable both...
POWER QUALITY. Harmonics in electric Power Supply
The harmonics in electrical systems are electrical currents or sinusoidal electrical voltages that have a frequency equal to an integer multiple of the frequency of the distribution system, called the fundamental frequency. By overlapping the Fundamental Current and...
POWER QUALITY. Voltage imbalances
Voltage imbalances are one of the most common Power Quality problems in three-phase electrical networks. Being often overlooked, they can cause serious damage to electrical and electronic equipment. Voltage unbalance can occur at any point of the three-phase...