Total losses = No-load (core) + Load losses (I²R + stray). Expressed in W/kW/MVA and tested per IEC/IEEE.

Power transformers work by transferring energy between circuits via a shared magnetic core. Alternating current in the primary winding creates alternating flux in the core. This flux links secondary windings and induces voltages according to the turns ratio. Because magnetic coupling rather than direct electrical connection carries energy, transformers provide isolation and can step voltage up or down while conserving power minus losses. Carefully designed cores, windings, insulation and cooling systems let them achieve high efficiency and reliable operation at high voltages and large power levels.

The USA hosts several manufacturers of medium and large power transformers, including domestic OEMs and U.S. subsidiaries of global companies. They provide HV/MV transformers for utilities, industrial plants, and renewables. Plants focus on North American standards (IEEE/ANSI), DOE efficiency rules, and grid resiliency requirements. Manufacturers offer engineered-to-order units, refurbishment, and long-term service, often supported by regional test and repair facilities.

Technical PDFs typically include specification sheets, dimensional drawings, electrical ratings, insulation and cooling data, loss tables, tap changer information, vector group, monitoring options, testing requirements, compliance standards and installation instructions. PDFs are used for design review, procurement and asset documentation.

Power loss arises from core hysteresis and eddy currents, winding I²R losses, stray flux heating in structural parts, and dielectric losses. Additional contributions may come from circulating currents in parallel windings, tap changer contact resistance, and power consumed by cooling systems. Poor maintenance can increase losses through degraded oil, corroded connections, or fouled cooling surfaces. Modern designs and materials aim to minimize all these contributions while maintaining mechanical and electrical robustness.

GlobeCore offers customization of automation levels for the US-6S. Options range from basic manual control of chamber doors and heating to fully automated temperature, pressure, and vacuum regulation. Automated systems improve repeatability, reduce operator intervention, and increase safety during dryer cycles.

Yes, explosion protection is absolutely necessary when introducing sulfur into bitumen modification equipment. Sulfur dust and sulfur vapors can form explosive mixtures with air, especially at elevated temperatures typical for PMB production. In addition, sulfur melts and reacts exothermically, and hydrogen sulfide (H?S) may be released if conditions are uncontrolled. Therefore, equipment must be designed with ATEX-compliant motors and sensors, proper grounding, inerting or ventilation of dosing zones, temperature interlocks, and sealed feeding systems. This is not just good practice but a basic safety requirement in sulfur-modified bitumen plants.

GlobeCore’s UVR and CMM-R regeneration systems are optimized for transformer and industrial oils. For used motor oil, additional pretreatment is required to remove fuel residues and additives. A customized regeneration configuration can be proposed for this application.

The CMM-260C transformer drying system ensures efficient moisture removal under vacuum. We will prepare a quotation with delivery terms and technical description.

The CMM-6RL is a transformer oil regeneration plant with a capacity of up to 6 m³/h. It removes acids, oxidation products, moisture, and gases through heating, vacuum degassing, and adsorbent treatment. The system can operate continuously in transformer circulation mode. For an accurate offer, please specify oil type, contamination level, and desired output parameters.