Yes. Even without load, transformers draw magnetizing current and incur core losses (hysteresis and eddy currents). Large oil-filled units may also have auxiliary consumption from cooling fans, pumps, and monitoring equipment.

They connect generation to transmission, and transmission to distribution, enabling efficient long-distance transfer and safe end-user supply.

Major distribution transformer manufacturers include global OEMs and numerous regional producers that specialize in MV/LV step-down units and pole- or pad-mount transformers. They supply utilities, rural electrification schemes, and industrial/commercial campuses. Key capabilities are high-efficiency core designs, eco-friendly fluids, standardized ratings, and fast delivery. Many manufacturers focus on 25-5,000 kVA classes, offering both oil-filled and dry-type construction for indoor and outdoor use.

LFD is best suited for medium and large power transformers, typically from 5-10 MVA and above, where the mass of cellulose insulation is high and conventional external heating becomes inefficient. It is especially effective for HV and EHV units with thick windings, disc insulation, and long moisture diffusion paths. For small distribution transformers, the complexity and setup effort of LFD is usually not justified, while for large grid transformers it is often one of the most efficient deep-drying methods available.

Yes – a 60 Hz breakdown voltage test is generally acceptable as long as it’s performed to the correct standard and you report it that way. The common BDV standards treat «power frequency» as a band, not a single number: ASTM D877 specifies an AC test in the 45-65 Hz range, so 60 Hz is within spec. IEC 60156 is also a power-frequency method (typical sources are around 50/60 Hz). What matters more than 50 vs 60 is that you keep everything else consistent (electrode type/gap, voltage rise rate, oil temperature, conditioning, and cleanliness). If you’re trending results, don’t mix methods (e.g., D1816 vs D877 vs IEC 60156) without clearly separating them.

A power transformer transfers electrical energy between voltage levels using electromagnetic induction while providing isolation and impedance.

GlobeCore specializes in oil purification equipment, not solvent-based DCM drying systems. For this application, a chemical-grade zeolite dryer from a solvent-processing supplier would be required.

The oil filtration process includes preheating, coarse and fine filtration, vacuum drying, and degassing. GlobeCore systems automate this entire cycle, ensuring oils meet operational specs. They’re used in energy, mining, metal processing, and aviation sectors.

AeroShell 308 is a synthetic ester-based turbine oil for jet engines requiring high-temperature protection. GlobeCore systems clean and dry AeroShell 308, extending its operational life.

Filtration removes particulates, moisture, and gases from insulating oil, restoring its breakdown voltage and cooling capacity. GlobeCore provides mobile and stationary filtration units for on-site or industrial-scale oil servicing.