As a leading service provider of transformer oil services, we offer you the expertise, resources and experience you need.
Our specific diagnostic analyses include:
- Moisture analysis – IEC 60814
- Dielectric breakdown – IEC 60156
- Acidity – IEC 60296
- Interfacial surface tension (IFT) – ISO 6295
- Dissipation factor and resistivity (DDF) – IEC 60247
- Dissolved gas analysis (DGA) – IEC 60567 and IEC 60599
- PCB tests – ASTM D4059
- Furan analysis – IEC 61198
- DBPC analysis ASTM D4768
- Density – ASTM D4052
- Viscosity – ASTM D445
- Corrosive sulfur test – ASTM D1275B
- Oxidation – IEC 61125
- Sediment and sludge – AS 1883
- Flash point – ASTM D3828
- Pour point – ASTM D97
- Particle count – NAS 1638 & ISO 4406
- Wear metal analysis – ASTM D5185
- Degree of polymerization – ASTM D4243
We also have the ability and expertise to test a wide range of mineral, synthetic ester, natural ester and silicone electrical oils to a variety of standards. Please see some examples below:
Standards
- Fluids for electrotechnical applications – mineral insulating oils for electrical equipment – IEC 60296
- Mineral insulating oils in electrical equipment – supervision and maintenance guidance – IEC 60422
- Recycled mineral insulating oil for transformers and switchgear – specification – BS148
- Insulating liquids – specifications for unused synthetic organic esters for electrical purposes – IEC 61099
- Synthetic organic esters for electrical purposes – guide for maintenance of transformer esters in equipment – IEC 6293
- Fluids for electrotechnical applications – unused natural esters for transformers and similar electrical equipment – IEC 61203
- Specifications for unused silicone insulating liquids for electrotechnical purposes – IEC 60836
- Guide for the maintenance of silicone transformer liquids – IEC 60944
Gas Content
- Dissolved Gas Analysis (DGA) – IEC 60567 (modified)
Oil Quality (Routine Tests)
- Appearance and Fibers – IEC 60422
- Color rating – ASTM D1500
- Moisture Content – IEC 60814
- Acidity (potentiometric titration) – IEC 62021 part 1
- Breakdown voltage – IEC 60156
- Dielectric Dissipation Factor (DDF), Resistivity (IRes) and Permittivity – IEC 60247
Oil Quality (Complementary Tests)
- Interfacial Tension – ASTM D971
- Sediment content – IEC 60422 Annex C.1
- Sludge content – IEC 60422 Annex C.2
- Elemental Analysis by ICP – ASTM D5185
- Particle count – IEC 60970:1989 and 2007, ISO 4406
Oil Quality (Special Investigative Tests)
- Potentially corrosive sulfur (copper and paper) – IEC 62535
- Corrosive sulfur (copper strip) – ASTM D1275 B
- Corrosive sulfur (silver strip) – DIN 51353
- Dibenzyl Disulfide (DBDS) – IEC 62697
- Oxidation Stability – IEC 61125
- Aromatic content determined by FTIR spectrum (DDB) – IEC 60590
- Density – ISO 12185/IP365
- Kinematic Viscosity – ISO 3104/IP 71/ASTM D445
- Flash Point (PMCC) – ISO 2719/ IP34/ASTM D93
- Flash Point (Cleveland) – ISO 2592/IP36/ASTM D92
- Fire Point (Cleveland) – ISO 2592/IP36/ASTM D92
- Pour Point – ISO 3016/IP15/ASTM D97
- Total Sulfur by WDXRF – ASTM D2622
- Refractive Index – ASTM D1218
- Platinum-Cobalt Scale – ASTM D1209
- Polycyclic Aromatics – IP346
Additives
- Oxidation Inhibitor (DBPC) – IEC 60666
- Passivator content – IEC 60666 Annex B
Environmental
- Polychlorinated biphenyl (PCB) – IEC 61619 and IP 462
Paper Quality
- Furan analysis – IEC 61198
- Phenol analysis – IEC 61198 (modified)
- Estimated Degree of Polymerization – calculation
- Methanol in Transformer Oil by GCMS – in house method
To find out more about our transformer oil testing services, contact us today.