Explore technical articles covering transformer oil testing, oil sampling, laboratory analysis, diagnostic interpretation, industry standards, and transformer reliability.
Transformer insulating fluid acts as an insulator for electric and thermal capacities for many electrical equipment. Measurement of dielectric breakdown is a major way to measure the capability of a fluid to withstand electrical stress. In measuring dielectric breakdown, an
Specific Gravity or relative density is a measure of the density of transformer fluids relative to water, being scaled at 1.000. The value from testing is normalized to 15C/15C. With the introduction of different transformer insulating fluids such as Natural
ABSTRACT Dibenzyl Disulfide (DBDS) is one of several sulfur compounds known to cause copper corrosion in transformers under certain circumstances. Remedial processes such as adsorbents, absorbents, and oil change-out have been known to reduce the concentration of DBDS in the
Dissolved Gas Analysis, or DGA Testing, is one of the sharpest sticks in the tool bag of analyses used in a predictive/preventative maintenance plan by transformer oil testing. The insulating fluids used in transformers and related equipment are used because
Before their manufacture was banned in 1979, PCBs were used widely in electrical equipment, including transformers and fluorescent light ballasts. Many transformers still contain traces of PCB-contaminated oil even after the oil has been changed several times. Because of Federal and
Maintaining transformers is not a new idea, but funding for transformer maintenance services continues to decline. The accounting structure incentivizes the purchase of new transformers. Globally, demand for new transformers has lead times extending up to three years. Unless there
