This property sets/gets the rated kVA of service transformer for allocating loads based on connected kVA at a bus. Side effect:  kW, PF, and kvar are modified. See help on kVA. Default = 0.0. 


% Create DSS object

DSSObject = actxserver('OpenDSSEngine.DSS')

if ~DSSObject.Start(0),

                    disp('Unable to start openDSS');



DSSText = DSSObject.Text;

DSSCircuit = DSSObject.ActiveCircuit;

% Compile a model        

DSSText.Command = 'Compile C:\myPath\myModel.dss';

DSSLoads = DSSCircuit.Loads;

% activates the first load on the list

i = DSSLoads.First;

% gets the rated kVA of service xfmr for the active load

myXkrmkVA = DSSLoads.xfkVA;