Standard
Active
Last Updated: Jan 08, 2024
Track Document
ASTM D6786-15(2023)
Standard Test Method for Particle Count in Mineral Insulating Oil Using Automatic Optical Particle Counters
Standard Test Method for Particle Count in Mineral Insulating Oil Using Automatic Optical Particle Counters
D6786-15R23
ASTM|D6786-15R23|en-US
Standard Test Method for Particle Count in Mineral Insulating Oil Using Automatic Optical Particle Counters
Standard
D6786 Standard Test Method for Particle Count in Mineral Insulating Oil Using Automatic Optical Particle Counters>
new
BOS Vol. 10.03 Committee D27
$
64.00
In stock
ASTM International
Significance and Use
5.1 Particles in insulating oil can have a detrimental effect on the dielectric properties of the fluid, depending on the size, concentration, and nature of the particles. The source of these particles can be external contaminants, oil degradation by-products, or internal materials such as metals, carbon, or cellulose fibers.
5.2 Particle counts provide a general degree of contamination level and may be useful in assessing the condition of specific types of electrical equipment. Particle counts can also be used to determine filtering effectiveness when processing oil.
5.3 If more specific knowledge of the nature of the particles is needed, other tests such as metals analysis or fiber identification and counting must be performed.
Scope
1.1 This test method covers the determination of particle concentration and particle size distribution in mineral insulating oil. It is suitable for testing oils having a viscosity of 6 mm2/s to 20 mm2/s at 40 °C. The test method is specific to liquid automatic particle analyzers that use the light extinction principle.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.