Transformer oil and insulating oil tests.
Intertek's TransoilCHECK© program provides transformer oil and insulating oil analysis and testing on a global basis. The laboratories test for transformer oil purity, quality, and chemical composition. Transformer oil test methods include ASTM, BS,and other recognized transformer oil analysis testing procedures. Specific transformer oil test method availability will vary depending upon location. Please contact Intertek for more information.
Routine testing of transformer oils and insulating oils on a regular schedule is an accepted industry practice. General and physical tests are suggested twice a year, dissolved gas analysis once a year, and Furan testing every 2 years for transformers in operation at least 5 years. Samples are easily shipped to Intertek laboratories providing transformer oil analysis, on a global basis. Insulating oil and transformer oil testing labs are located in the United Kingdom, United Arab Emirates, Singapore, Mexico, Spain, and other locations. The labs test insulation oil samples from clients across the world.
|Transformer oil tests||Transformer oil test methods|
|Appearance at 15°C||ASTM D4176|
|Water Content||ASTM D1533B, D6304|
|Density at 15°C||ASTM D4052|
|Specific Gravity||ASTM 4052|
|Suspended Particles in Oil||Visual|
|Dielectric Breakdown Voltage||ASTM D877|
|Sediment, Sludge||BS 5730|
|Interfacial Tension||ASTM D971|
|Kinematic Viscosity||ASTM D445|
|Neutralisation Value mg KOH/g||ASTM D974|
|Flash Point||ASTM D92|
|Pour Point ° C||ASTM D97|
|Particle Count (NAS 1638,ISO 4406)||Automatic Particle Counter|
|Dissolved Gas Analysis||ASTM D3612|
|Trace Gases Analysis:|
|Carbon Dioxide, Carbon Monoxide ppm|
|Acetylene, Ethylene ppm|
|Oxygen, Nitrogen ppm|
|Methane, Ethane ppm|
|Total Dissolved Combustible Gases ppm|
|Composition of insulating oils by petroleum origin||ASTM D2140|
|Disipation Factor at 100°C||ASTM D924|
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