How will the new DOE 2016 and NRCan 2019 compliant Sentinel G, K and H be different from the older TP1/C802.2 lines?

To achieve the significant decrease in electrical loses mandated by DOE2016 in transformers that are already at 97-99% efficiency, major changes in design and material quality were implemented, resulting in larger cores and overall sizes for the transformers. As a result of these quantitative and qualitative increases, the costs of the new transformers will also increase proportionally.