Energy Efficient General Purpose Transformers

HPS Sentinel ® Series

HPS Sentinel®  general purpose distribution transformers are rated for 600 volts and below. They are generally used for supplying appliance, lighting, heating, motorized machine and power loads from electrical distribution systems. For non-linear loads, all standard energy efficient distribution transformers have to be derated to allow for additional heat due to harmonic losses.

HPS provides two lines of energy efficient general purpose distribution transformers:

 HPS Sentinel®

• Meets U.S. DOE 10 CFR Part 431 (and/or TP1) efficiency standards and the Canadian Energy Efficiency Regulations SOR/94-651 (and/or C802.2) efficiencies at 35% of rated load
• Efficiencies are calculated under a linear load profile
• 60 Hz frequency
• Ratings from 15 to 333 kVA single phase and 15 to 1500kVA three phase
• 6 standard single phase voltage groups and 10 standard three phase voltage groups available
• Copper and aluminum available
• UL listed
• CSA certified
• 10 year warranty
• Custom sizes, ratings and styles available upon request

HPS SuperSentinel®

• Exceeds U.S. DOE 10 CFR Part 431 (and/or TP1) efficiency standards and the Canadian Energy Efficiency Regulations SOR/94-651 (and/or C802.2) efficiencies at an operating range at 35% of rated load
• Efficiency performance will meet the NEMA Premium® guidelines; 30% lower losses than U.S. DOE 10 CFR Part 431 (and/or TP1) and the Canadian Energy Efficiency Regulations SOR/94-651 (and/or C802.2) efficiency standards when measured under a linear load profile
• 60 Hz frequency
• Ratings from 15 to 333 kVA single phase and 15 to 1500kVA three phase
• 6 standard single phase voltage groups and 10 standard three phase voltage groups available
• Copper and aluminum available
• UL listed
• CSA certified
• 10 year warranty
• Custom sizes, ratings and styles available upon request

For more information, click one of the links below:

• Energy Efficient General Purpose Brochure
• Energy Efficient General Purpose Catalog (HTP-10 Catalog Sec. 7)
• Enclosure Drawings, Electrical Connection Diagrams, Termination Details (HTP-10 Catalog Sec. General Info)
• HPS Sentinel Series Installation Manual (IOMGDDI Installation Manual)
• HPS Sentinel 1.2kV Class Typical Specification (SPS 06, Rev 05)
• HPS SuperSentinel 1.2kV Class Typical Specification (SPS 18, Rev 03)
• Minimum Effciency Values for Dry-Type Transformers - CSA C802.2-06

As a Partner in the NEMA Premium® Transformer Program, Hammond Power Solutions has determined that this product meets the NEMA Premium® Efficiency specifications for premium energy efficiency. 

NEMA Premium® is a trademark of National Electrical Manufacturers Association