High Voltage Transformers with Primary Windings are specially designed to balance electric supply in medium voltage switchgear. These High Voltage Transformers are manufactured using high quality grain-oriented core steel and copper conductor to assure strength and high performance. These High Voltage Transformers are provided with primary windings in the form of vacuum cast which has high dielectric strength and ruggedness. These High Voltage Transformers with Primary Windings are available in both single and three phase configurations with some models capable of vertical mounting to conserve space.