ASTM D1698-03
Standard Test Method for Sediments and Soluble Sludge in Service-Aged Insulating Oils
- Standard No.
- ASTM D1698-03
- Release Date
- 2003
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM D1698-03(2008)
- Latest
- ASTM D1698-03(2008)
- Scope
Sediment in insulating oil may deposit on transformer parts and interfere with heat transfer and may choke oil ducts; thus hindering oil circulation and heat dissipation. Inorganic sediment usually indicates contamination of some type and organic sediment indicates either deterioration of the oil or contamination.
Soluble sludge indicates deterioration of the oil, presence of contaminants, or both. It serves as a warning that formation of sediment may be imminent.
The determination of sediment and soluble sludge in a used insulating oil assists in deciding whether the oil may continue to be used in its existing condition or should be replaced, reclaimed, or reconditioned.
1.1 This test method covers the determination of sediment and soluble sludge in service-aged insulating oils of petroleum origin. Also, provision is made for determining organic and inorganic content of the sediment. The method is intended primarily for oils of comparatively low viscosity; for example 5.7 to 13.0 cSt (mm178;/s) at 40176;C (104176;F). Suitability for high viscosity oils have not been determined.
1.2 This standard may involve hazardous materials, operations, and equipment. 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.
ASTM D1698-03 Referenced Document
- ASTM D2440 Standard Test Method for Oxidation Stability of Mineral Insulating Oil
- ASTM D923 Standard Practices for Sampling Electrical Insulating Liquids
ASTM D1698-03 history
- 2003 ASTM D1698-03(2008) Standard Test Method for Sediments and Soluble Sludge in Service-Aged Insulating Oils
- 2003 ASTM D1698-03 Standard Test Method for Sediments and Soluble Sludge in Service-Aged Insulating Oils
- 1997 ASTM D1698-97 Standard Test Method for Sediments and Soluble Sludge in Service-Aged Insulating Oils
