HPS Sentinel G ventilated stand-up transformers meet the latest DOE 2016 and NRCan 2019 energy efficiency requirements. These dry-type 3-phase transformers are open coil/core ventilated, NEMA 3R rated and offer significant energy savings and environmental benefits. Models are rated up to 75kVA, and the standard 10kV BIL rating provides increased reliability and protection against critical equipment failure from voltage spikes and other line transients. Advanced core and coil construction improves efficiency. The coated core is manufactured from quality non-aging, cold-rolled, silicon steel laminations. Precision wound aluminum conductors are electrically balanced to minimize axial forces during short-circuit conditions. Starting at $1,235.00, HPS Sentinel transformers are UL and CSA certified, and have a 10-year warranty.