ASTM D115, Section 42

Dielectric Strength of Varnish

https://store.astm.org/d0115-17r24.htmlPurpose: This test is used to determine the dielectric strength and dielectric breakdown voltage of insulating materials.

Sample: Coated panels, Flat plaques

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Basic Description: The flat plaque is placed between 2 metal electrodes. AC voltage is applied to the electrodes at a frequency of 60 Hz and the voltage is slowly increased until it burns through the center of the panel.

Test Capacity: Up to 90 kV (90000 volts)

Method Publisher: https://store.astm.org/d0115-17r24.html

Keywords:

• Dielectric Breakdown Voltage
• Dielectric Strength

Related Test Methods:

• ASTM D150 – Permittivity (dielectric constant), Dissipation Factor
• ASTM D257 – Surface Resistivity, Volume Resistivity
• ASTM D149 – Dielectric Strength (AC current)
• ASTM D3755 – Dielectric Strength (DC current)
• ASTM D1675 (Section 25) – Dielectric Breakdown Voltage