Three-phase dry transformer

摘要

PPROBLEM TO BE SOLVED: To miniaturize a three-phase dry-type transformer of a high breakdown strength and a high insulation, and to reduce its cost. PSOLUTION: Three single-phase dry-type insulating transformers 2 are formed by arranging a secondary winding 6 molded with a first resin and a primary winding 7 insulated outside of the secondary winding 6 concentrically, and are disposed at a triangle. A pull-out part of the secondary winding 6 of these respective single-phase dry-type insulating transformers 2 is collected to a region where the transformers 2 are disposed at a triangle, and is coated with a second resin. PCOPYRIGHT: (C)2009,JPO&INPIT