Transformer Analysis

Transformer oil needs to be tested periodically to ensure that it is still fit for continued use because the oil will deteriorate over time. Testing sequences and procedures are defined by various international standards, many of them set by ASTM and IEEE.

Testing consists of measuring breakdown voltage and other physical and chemical properties of the oil within the system,

Below is a listing of tests and typical packages offered.

TESTS

METHOD

STANDARD SCREEN

ANNUAL

Acid Number D974
✔
✔
Dielectric Strength D877 / D1816
✔
✔
Dissolved Gas D3612
✔
Interfacial Tension D971
✔
✔
Karl Fischer Water D1533
✔
Oxidation Inhibitor DBPC & DBP D4768
✔
Specific Gravity D1298
✔
✔
Power Factor 25/100C D924
✔
Visual/Color D1524
✔
✔

Additional Tests Include: Corrosive Sulfur (D1275B), Fire Point (D92), Flash Point (D92), Furan Analysis (D5837), Particle Count (ISO 4406), PCB Detection (D4059), Spectrometric Analysis (Modified D5185 & D4951), Viscosity (D445)