Dissolved Gas Analysis DGA

Today, a company required a contract laboratory to develop an alternative testing method to Dissolved Gas Analysis.  The company was using DGA in their transformer oil testing and was looking for a laboratory to work with them on development of a new test method technique. DGA stands for Dissolved Gas Analysis. DGA is a method which utilizes gas chromatography (CG) to measure the amount of gas dissolved in oils.

ContractLaboratory.com has received several requests for DGA including:

  • ONGOING TESTING Independent Contract Lab needed for oil transformer sample testing of Electrical Transformer Oil Samples, The tests required are: Table-1: Tests & Test Frequency for Transformer Oil Analysis Sr. No. Test Transformer Type 400 kV TX 220kV TX 132kV TX 33kV EAT Transformer Catg. O A B C Standard Freq. Freq. Freq. Freq. 1. Breakdown voltage IEC 60156 1 1 1 1 2. Color and Appearance IEC 60422 1 1 1 1 3. Water content IEC60814 1 1 1 1 4. Acidity (Neutralization value) IEC 62021-1 1 1 1 3 5. DDF at 90°C including Resistivity IEC 60247 1 1 1 3 6. Interfacial Tension ISO 6295 1 3 3 3 7. Inhibitor content IEC 60666 1 1 1 1 8. Oxidation Stability (Induction IEC 61125 (B,C) 3 3 3 3 9. Oxidation Stability (Acidity and Sludge) IEC 61125 (A) 3 3 3 3 10. Particle Count IEC 60970 3 3 3 — 11. Flash Point NEN-ISO 2719 3 3 3 3 12. PCB’s EN12766-1/ EN61619 3 3 3 3 13. Corrosive sulphur IEC 62536 3 3 3 3 14. DBDS (dibenzyl disulphide) IEC 62697-1 3 3 3 3 15. Dissolved Gas Analysis IEC 60567 0.5 0.5 0.5 1 16. Furanic Compounds IEC 61198 1 3 3 3 17. Predicted Degree of Polymerization (PDP) Calculative 1 3 3 3 Note-1: Freq. 0.5, 1 & 3 means
  • Oil analytical chemistry laboratory needed for oil analysis: Water content in oil and Dissolved gas analysis in oil
  • Eastern USA ASTM Analytical Laboratory needed for Transformer Oil
  • Analytical Chemistry Laboratory required for testing of oil from transformer for the following: Dissolved gas analysis DGA-24 hr service Metals in oil-insulationg oil Metals in oil-lube oil PCB concentration Interfacial tension Color number Dielectric breakdown voltage Specific gravity Refractive index Moisture in oil Acid number Viscosity Particle count Visual exam Sediment exam Power factor @ 25 degree C Power factor @ 100 degree C Oxidation inhibitor Furanic compounds Corrosive sulfur

This request can be seen in our Incoming Laboratory Test Requests at: https://www.contractlaboratory.com/labclass/requests/outsource_requests.cfm  If your company needs a laboratory to assist them in developing alternative test methods, Submit a Laboratory Test Request

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