Class H multi-pulse open dry transformers are designed to power variable speed drives, reducing harmonics and improving power factor. Their Class H (180°C) insulation ensures high thermal resistance and durability. These transformers divide the power into multiple phase-shifted secondary windings, allowing configurations of 6, 12, 18, or more pulses. Their open design facilitates heat dissipation, and by not using dielectric fluids, they minimize fire risks and reduce maintenance costs. They are ideal for industrial applications, mining, and systems with high efficiency and power quality requirements.