What Are The Effects Of Humidity On Alternating Current Reactors?

Water molecules in humid air can induce ionization and charge migration changes during discharge, thereby reducing the withstand voltage of the ac input reactor. This humidity-induced decrease in breakdown strength is particularly pronounced in uniform electric field configurations.

Furthermore, higher humidity can alter the threshold of extremely weak corona discharge or partial discharge. The characteristics of the negative electrode corona discharge pulse differ significantly between dry and humid air as the dielectric, suggesting that humidity may affect the discharge stability and lifespan of the ac output reactor.

Air humidity can also promote the formation of conductive channels and increase leakage current, especially when there are micro-cracks or defects in the insulating materials, metal plates, or connectors. Humid environments can also cause corrosion or aging of the insulation layers of metal contacts and solder joints in electronic components, exacerbating the risk of equipment failure.