AC High Voltage Testing Machine is a specialized device used for testing the insulation strength of electrical equipment or components. This type of testing is used to verify that the electrical insulation is capable of withstanding high voltage and to detect any potential defects in the insulation. The machine works by applying a high-voltage AC waveform to the component under test while monitoring the electrical response. If the insulation is faulty or inadequate, the voltage applied will cause a breakdown of the insulation, failing the component. AC High Voltage Testing Machine is commonly used in the power generation and transmission industries.