A dialog allows the user to enter the kVA of the transformer, the efficiency, and PF. The default kVA rating and efficiency are taken from ASHRAE 90.1-2016. The software handles the calculation of the transformer losses and its impact on total electrical energy and a new building energy level variable exists in Vistapro called 'Transformer losses'. ASHRAE 90.1 2016 and 90.1 2019 reportage is updated to take account of the transformer losses calculations and this is reflected in the total electrical energy passed to the reports from Vistapro
