The overvoltage absorber is an electrical device used in the power industry to prevent overvoltages and the resonant overvoltages of the grid itself. It is also known as the RC overvoltage absorber. Generally used in conjunction with the arrester. Overvoltage absorber and overvoltage protector are different.
Over-voltage surge absorber and over-voltage protection difference:
1 over-voltage protection device is to do the main components of zinc oxide varistor or zinc oxide varistor in series with the discharge gap. Overvoltage absorber is a dry type of high-voltage capacitors and resistors in series.
2 over-voltage protection can prevent a variety of over-voltage (including lightning) but can not absorb over-voltage. Overvoltage absorber because of the parallel RC capacitor can not be completely used for lightning protection reasons. Lightning of the large capacity, capacitance is not possible to bear the full energy of lightning, and can only suppress lightning over-voltage.
3 over-voltage protection using a wide range, you can protect the transformers, lines, switches, motors, capacitors and so on. Over-voltage absorber, can protect transformers, switches, motors, capacitors, reactors and so on.
4 over-voltage absorber because of the parallel capacitor has a certain resonance suppression and elimination of harmonics function. Overvoltage protector does not have this function.
