High-current resistor

floor-standingfilter

The Harmonic Filter resistors are used to eliminate the dangerous distortions (harmonics) generated inside the network due to connection of more and more number of electronic power converters. The main problems caused by harmonics, that are sinusoidal currents with different frequencies and amplitudes compared with the rated 50/60 Hz network currents, are : - increment of losses on the line - malfunctioning of the test equipments - interferences with radio and phone systems - resonances - high currents at neutral point These resistors , used together with reactors and capacitors, help to reduce and filter the harmonics.