Abstract: A split winding assembly for a transformer is configured to extend along a main limb of a transformer core between a first end and a second end. The split winding assembly includes a first split winding section extending from the first end toward a midpoint of the split winding assembly and a second split winding section extending from the second end toward the midpoint of the split winding assembly along the main limb of a transformer core. The first split winding section includes a first inner winding section configured to surround the main limb of the transformer core and a first outer winding section surrounding the first inner winding section. The second split winding section includes a second inner winding section configured to surround the main limb of the transformer core and a second outer winding section surrounding the second inner winding section.

Abstract: Multi-helical windings in a transformer are disclosed. A group of helical windings (100) that are connected in series (e.g., a single, continuous cable wound around a cylinder) may be concentrically arranged around a longitudinal axis to induce magnetic flux in the same direction along the longitudinal axis. A plurality of such groups (100) may be connected in series and arranged radially around the longitudinal axis. Additionally or alternatively, a pair of groups may be connected in parallel and arranged at the same radial distance around the longitudinal axis with an axial separation between the pair. In addition, spaces (DI) may be formed radially between the turns (112A-N) of the helical windings (110A-D) and axially on radial ends of the group for cooling. The disclosed configurations may be used as the LV or HV winding in any type of transformer, including single-phase and three-phase distribution, dry, and power transformers.

Abstract: A split winding assembly for a transformer is configured to extend along a main limb of a transformer core between a first end and a second end. The split winding assembly includes a first split winding section extending from the first end toward a midpoint of the split winding assembly and a second split winding section extending from the second end toward the midpoint of the split winding assembly along the main limb of a transformer core. The first split winding section includes a first inner winding section configured to surround the main limb of the transformer core and a first outer winding section surrounding the first inner winding section. The second split winding section includes a second inner winding section configured to surround the main limb of the transformer core and a second outer winding section surrounding the second inner winding section.

Abstract: The present invention concerns solutions having an antimicrobial activity. The solutions described herein comprise particles containing slightly soluble metallic salt and surfactant. In the solutions described herein, the molar ratio between the slightly soluble metallic salt and the surfactant is lower than or equal to about 1. Also described are substrates comprising the solutions, methods for producing substrate comprising the solutions, methods for producing the solutions and uses of the solutions for substrate finishing and substrate sanitization.

Abstract: The present invention relates to an antimicrobial material comprising sheet of fabric and- metallic salt crystals embedded in an adhesive material covering the sheet of fabric.

Abstract: The present invention concerns solutions having an antimicrobial activity. The solutions described herein comprise particles containing slightly soluble metallic salt and surfactant. In the solutions described herein, the molar ratio between the slightly soluble metallic salt and the surfactant is lower than or equal to about 1. Also described are substrates comprising the solutions, methods for producing substrate comprising the solutions, methods for producing the solutions and uses of the solutions for substrate finishing and substrate sanitization.

Abstract: The present invention relates to an antimicrobial material comprising sheet of fabric and- metallic salt crystals embedded in an adhesive material covering the sheet of fabric.