Energy Efficient Low Voltage Distribution Transformers
HPS Sentinel® - Energy Efficient General Purpose Distribution Transformers
Energy efficient general purpose low voltage 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.
HPS Synergy® - Energy Efficient K-Factor Distribution Transformers
Energy efficient k-factor low voltage distribution transformers are rated for 600 volts and below. The use of k-factor distribution transformers has become a popular means of addressing harmonic related overheating problems where electronic ballasts, drives, personal computers, telecommunications equipment, broadcasting equipment and other similar power electronics are found in high concentrations. 
HPS Centurion® - Energy Efficient Harmonic Mitigating Distribution Transformers
Energy efficient harmonic mitigating low voltage distribution transformers are rated for 600 volts and below. Harmonic mitigating transformers are superior to k-rated and general purpose transformers in that they reduce voltage distortion (flat-topping) and power losses due to current harmonics created by single-phase, non-linear loads such as computer equipment.