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ASTM D1807

April 10, 2000

Complete Document

Standard Test Methods for Refractive Index and Specific Optical Dispersion of Electrical Insulating Liquids

Includes all amendments and changes through Editorial Change 1, December 2009


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Product Details:

  • Revision: April 10, 2000
  • Published Date: December 2009
  • Status: Not Active, See comments below
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 3
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

These test methods cover the determination of the refractive index and the specific optical dispersion of electrical insulating liquids such as are used in capacitors, transformers, circuit breakers, and oil-filled cables.

Two test methods are described, a routine method and a more precise referee method. Both methods are applicable to transparent, light-colored, insulating liquids.

The routine method is used to determine refractive index and specific optical dispersion as described in these test methods.

The referee method is used when a test of high accuracy is desired. These methods are described in Test Method D1218. Specific optical dispersion is calculated by dividing the refractive dispersion value determined in Test Method D1218 by the relative density (specific gravity) (see Test Method D1298) of the liquid under test.

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

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.