What causes current to flow through an insulator?
Insulation “does not conduct.” But if you use enough voltage even the best of insulations will allow some current to flow. You may wonder why the current flows? There are several reasons current will flow through insulation during a hipot test. Resistance, capacitance, arcs, electrochemical effects, and corona are all effects that describe current flow. All of these effects add together during a hipot test to shape the outcome of the test.
