ASTM D2275-22 PDF Download

ASTM D2275-22 is a standard test method that focuses on determining the voltage endurance of solid electrical insulating materials for use at commercial power frequencies. The test method specifically evaluates the materials' resistance to prolonged AC stress under corona conditions.

The term "corona" is used in this test method to refer to a visible glow at the edge of the electrode interface that is caused by partial discharges. The standard uses the term corona instead of partial discharge because corona is defined as "visible partial discharges in gases adjacent to a conductor" in Terminology D1711.

The purpose of this test method is to provide a means for comparative evaluation between different materials in terms of their ability to withstand prolonged AC stress under corona conditions. By determining the voltage endurance, this standard allows for the rating of materials and helps in selecting the most suitable insulating materials for specific applications.