Overview

HPS three phase autotransformers are available for applications where small voltage corrections are necessary in a distribution system. They are frequently used as an economical alternative to three phase general purpose distribution transformers to adjust the supply voltage to match specific load requirements when load isolation from the supply line is not required. Autotransformers can be used as either a step-up or step-down transformer. 

• Ratings from 3 kVA to 500 kVA
• 60 Hz frequency (50/60 Hz on units with 380V primary)
• 600Y, 480Y, 400Y, 240Y, 208Y Volts
• Three phase
• UL listed
• CSA certified
• 1 year warranty

• Autotransformer Catalog Section
• Enclosure Drawings, Electrical Connection Diagrams, Termination Details
• Autotransformer Installation Manual
• Three Phase Encapsulated Autotransformer
• 1.2kV Class Autotransformer Typical Specification (doc)
• 1.2kV Class Energy Efficient Autotransformer Typical Specification (doc)