VPI Dry-Type Transformers (H-Class)

VPI phase-shifting transformers for medium-voltage variable-speed and variable-frequency drive systems. The referenced design supplies multi-pulse power-conversion arrangements used to control the starting, speed and torque of higher-power industrial motors.

The phase-shifting arrangement is designed to reduce the harmonic impact of the drive on the electrical supply. The manufacturer identifies VPI technology and CHB drive topology for this product family.

Selection is specific to the drive and installation. Provide input voltage, rated power, frequency, required phase shifts, number of secondary outputs, drive topology, cooling arrangement and site conditions for engineering review.

Insulation thermal class, temperature rise, dielectric ratings, dimensions and guaranteed losses must be confirmed in the project-specific technical documentation.