Pad Mounted Transformers (PMTs), compact outdoor power distributors, follow ANSI/IEEE/IEC standards and are classified by three key dimensions. By phase: single-phase (10-250 kVA, for residences/rural areas) and three-phase (50-3000 kVA, for industries/urban grids). By insulation: oil-immersed (cost-effective, general use) and dry-type (fire-safe, for hospitals/data centers). By application: utility grid, industrial/commercial, and renewable energy (wind/solar) variants, with overlapping categories requiring cross consideration.
