Explore technical articles covering transformer oil testing, oil sampling, laboratory analysis, diagnostic interpretation, industry standards, and transformer reliability. We also share the latest news and spotlight our amazing employees who make it all possible!
Polychlorinated biphenyls (PCBs) have not been manufactured in the United States since the late 1970s, but they may still be present in older transformers and other oil-filled electrical equipment. Some units were originally filled with PCB-containing fluids, while others may
Maintaining a reliable electric system requires more than responding when equipment fails. Utilities need accurate condition information, consistent maintenance processes and experienced technical support to manage transformers across substations, generating facilities and transmission and distribution networks. MVA brings transformer oil
Oil-filled power transformers are among the most critical and expensive assets in the electrical grid. When they fail unexpectedly, the costs go far beyond equipment replacement: extended outages, safety risks, and disrupted operations. Dissolved Gas Analysis (DGA) is one of
Transformer oil, also called insulating oil or dielectric fluid, is specially formulated for use inside electrical transformers. It surrounds the windings, core and other internal components, where it helps manage heat and withstand electrical stress. Mineral oil is commonly used,
Every transformer oil test begins with one critical step: collecting an accurate, representative sample. Even the most advanced laboratory equipment cannot correct a sample that has been contaminated, exposed to air or moisture, mislabeled, or collected improperly. If the sample
Moisture is one of the most important factors affecting transformer oil and solid insulation condition. Water can enter a transformer through leaks, worn seals, exposure during maintenance or normal aging. It can also be produced as cellulose insulation deteriorates. Because
When a transformer requires attention, oil testing is almost always the first step. A properly collected oil sample can provide valuable insight into the transformer’s internal condition, identify developing faults and help determine whether additional investigation is necessary. Laboratory diagnostics
Transformer oil does more than insulate and cool electrical equipment. It also carries valuable information about what may be happening inside a transformer. Through laboratory testing and expert analysis, transformer oil samples can help identify developing faults, evaluate insulation condition
