Anodised Aluminium, Voltage : 100V

The Anodising Process is an electrolytic process which results in the surface of the Aluminium Strip being converted to a layer of Aluminium Oxide which firmly adheres to the metal surface and forms a nearly homogeneous bond with the Aluminium. This oxide layer functions as an electrical insulator with insulating properties dependent on the oxide layer thickness. The oxide layer thickness is controlled during the Anodising process so as to meet the desired insulation level which would be adequate for the inter-turn voltage. For example, if the Inter-turn Voltage is 1V, then the insulating level would be in excess of 100V.

The Al2O3 aluminium oxide layer has high wear and abrasion resistance. It has a melting point of approximately 2000oC which exceeds the melting point of 658oC of the base Aluminium metal. Thus, effectively the oxide layer would have refractory properties and a Coil made from Anodised Aluminium Conductor could insulate till it melts.