Three-Phase 3D Wound Core

Three equal-section wound cores are formed from grain-oriented silicon steel strip and assembled into a symmetrical triangular (3D) structure. The three magnetic paths are identical, so flux is balanced, no-load loss and no-load current are low, and running noise is reduced. The compact 3D arrangement raises the cross-section fill factor and helps keep transformer size and weight down. • Symmetrical three-phase magnetic circuit — balanced reluctance, low no-load loss • Low noise operation • High fill factor — compact triangular layout saves space • Any size — window height, centre distance and cross-section made to your drawing • Optional processes — stress-relief annealing, coating Typical applications: oil-immersed and dry-type distribution transformers, compact substations.