Full Description

1.1This practice covers the preparation of insulating paper and board impregnated with a liquid dielectric. Where this practice states only paper, the same procedure shall apply to board.

1.2This practice has been found practicable for papers having nominal thickness of 0.05 mm (2 mil) and above. It has been used successfully for insulating board as thick as 6 mm (¹/₄in.) when care is taken to ensure the specimen geometry necessary for valid measurement of dielectric properties. Suitable geometry depends on the electrode system used. Rigid solid opposing electrodes require flat specimens that have essentially parallel surfaces.

1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.