... B)10 Series H-grade Insulation Dry-type Power Transformer Waveform Smooth Low Harmonic Pollution Low Loss Features ... B)10 type-this series Dry-type Distributing Transformer has strong with standing of thermaI shock.overload ... load fluctuation and dirty, moist, such as airport power plant, melaIIurgy, hospital, skyscraper,shopping center, and ... SG(B)10 Series H-grade Insulation Dry-type Power Transformer