<p>This document specifies test methods for the determination of the breakdown voltage and withstand voltage of anodic oxidation coatings on aluminium and its alloys, on flat or near-flat surfaces and on round wire. The methods are applicable to anodic oxidation coatings used primarily as electrical insulators.</p>
<p>The methods are not applicable to coatings in the vicinity of cut edges, the edges of holes, or sharp changes of angle on, for example, extruded shapes.</p>
<p>NOTE 1 Breakdown voltage and withstand voltage are affected by relative humidity.</p>
<p>NOTE 2 The methods described do not give satisfactory results for unsealed coatings because they are affected by the humidity in particular.</p>
Registration number (WIID)
72172
Scope
<p>This document specifies test methods for the determination of the breakdown voltage and withstand voltage of anodic oxidation coatings on aluminium and its alloys, on flat or near-flat surfaces and on round wire. The methods are applicable to anodic oxidation coatings used primarily as electrical insulators.</p>
<p>The methods are not applicable to coatings in the vicinity of cut edges, the edges of holes, or sharp changes of angle on, for example, extruded shapes.</p>
<p>NOTE 1 Breakdown voltage and withstand voltage are affected by relative humidity.</p>
<p>NOTE 2 The methods described do not give satisfactory results for unsealed coatings because they are affected by the humidity in particular.</p>
