Our accredited oil laboratory reports 42 test parameters across five categories to ASTM, IEC and ISO methods — from routine oil quality to dissolved-gas fault diagnosis and paper-insulation life estimation — and performs fuel specification testing. Sampling can be done on site.
| Category | Tests | Methods |
|---|---|---|
| Physical & Chemical Properties These tests assess the basic quality, purity, and aging state of the transformer oil. | 15 | ASTM D1298, ASTM D1500, ASTM D1524, ASTM D1533 / D6304 |
| Electrical Properties These tests measure the oil's ability to insulate and resist electrical breakdown. | 5 | ASTM D1169, ASTM D1816, ASTM D924, ASTM D924 / IEC 60247 |
| Dissolved Gas Analysis (DGA) DGA is the most critical diagnostic test. Transformer faults produce specific gases that dissolve in the oil. By measuring these gases, you can detect problems before equipment failure. | 11 | ASTM D3612, IEC 60567, ISO 6954 |
| Particle Count Analysis Measures solid contamination in the oil to assess cleanliness. | 3 | IEC 60970, IP 565, ISO 4406 / IP 565 |
| Furan & Passivator Analysis Furan compounds are byproducts of cellulose (paper) insulation breakdown inside the transformer. This test estimates the remaining life of the paper insulation. | 8 | ASTM D5837, ASTM D5837 / IEC 61198, IEC 60666 |
| Parameter | Units | Method |
|---|---|---|
| Appearance / Visual Examination | Visual | ASTM D1524 |
| Color (ASTM Color) | ASTM Scale | ASTM D1500 |
| Density at 15°C (or 20°C) | g/cm³ | ASTM D1298 |
| Viscosity at 40°C | cSt | ASTM D445 |
| Viscosity at -30°C (Calculated) | seconds | ASTM D341 |
| Pour Point | °C | ASTM D97 |
| Flash Point | °C | ASTM D92 |
| Water Content | ppm | ASTM D1533 / D6304 |
| Acid Number (TAN) | mg KOH/g | ASTM D664 |
| Interfacial Tension (IFT) | mN/m (dyn/cm) | ASTM D971 |
| Corrosive Sulfur | Pass/Fail | ASTM D1662 |
| DBDS (Dibenzyl Disulfide) | mg/kg | IEC 62697 |
| PCB Content | ppm | ASTM D4059 |
| Oxidation Inhibitor (DBPC) | mg/L or % | ASTM D2668 |
| Oxidation Stability (Sludge + TAN) | mg/100ml & mg KOH/g | ASTM D2272 |
| Breakdown Voltage (2.5mm gap) | kV | ASTM D1816 |
| Breakdown Voltage (1.0mm gap) | kV | ASTM D1816 |
| Dielectric Dissipation Factor at 90°C | ASTM D924 / IEC 60247 | |
| Power Factor at 25°C / 100°C | % | ASTM D924 |
| Resistivity at 90°C | GΩ·m | ASTM D1169 |
| Hydrogen | ppm | ASTM D3612, IEC 60567, ISO 6954 |
| Methane | ppm | ASTM D3612, IEC 60567, ISO 6954 |
| Ethane | ppm | ASTM D3612, IEC 60567, ISO 6954 |
| Ethylene | ppm | ASTM D3612, IEC 60567, ISO 6954 |
| Acetylene | ppm | ASTM D3612, IEC 60567, ISO 6954 |
| Carbon Monoxide | ppm | ASTM D3612, IEC 60567, ISO 6954 |
| Carbon Dioxide | ppm | ASTM D3612, IEC 60567, ISO 6954 |
| Oxygen | ppm | ASTM D3612, IEC 60567, ISO 6954 |
| Nitrogen | ppm | ASTM D3612, IEC 60567, ISO 6954 |
| Total Combustible Gas (TCG) | ppm | ASTM D3612, IEC 60567, ISO 6954 |
| Total Dissolved Gas (TDG) | ppm | ASTM D3612, IEC 60567, ISO 6954 |
| Particle Count (ISO 4406 Code) | Code (e.g. 17/15/12) | ISO 4406 / IP 565 |
| Maximum Count per 100 ml | particles/100ml | IP 565 |
| Total Particulate Contamination (TPC) | mg/L | IEC 60970 |
| 2-Furaldehyde | µg/L (ppb) | ASTM D5837 / IEC 61198 |
| 5-Hydroxymethyl-2-furaldehyde | µg/L (ppb) | ASTM D5837 / IEC 61198 |
| Furfuryl Alcohol | µg/L (ppb) | ASTM D5837 / IEC 61198 |
| 2-Acetylfuran | µg/L (ppb) | ASTM D5837 / IEC 61198 |
| 5-Methylfurfural | µg/L (ppb) | ASTM D5837 / IEC 61198 |
| Total Furanic Compounds | µg/L (ppb) | ASTM D5837 |
| Benzotriazole (BTA) | mg/kg | IEC 60666 |
| Irgamet 39 | mg/kg | IEC 60666 |
Routine dissolved-gas analysis is reported within days of the sample reaching the laboratory; urgent samples can be prioritised — tell us when you book.
Yes. Our team can sample transformers on site across Saudi Arabia, or you can send samples in our sampling kits.
Yes. Energy Distributor is accredited to ISO/IEC 17025:2017 by IAS (international) and by SAAC, the Saudi Accreditation Center. For each instrument you can choose an IAS-accredited, SAAC-accredited or non-accredited calibration depending on the scope you need.
Yes. We calibrate in our laboratories in Riyadh and Al Khobar, or on site anywhere in Saudi Arabia for instruments that should not be moved or where downtime matters.
Certificates are issued on completion and are available any time through our certificate download portal at erp.ed.com.sa, as well as in print with the instrument.
Yes. We calibrate and repair test and measurement equipment of all brands. Since 2010 instruments from more than 2,000 manufacturers have passed through our laboratory.
Tell us the instrument, quantity and standard — we reply with a quotation.