I am using NE 39 bus system's simulink model. From this model, how can I calculate the line current limits?

I am using NE 39 bus system's Simulink model for my simulation purpose. I need the current limits of the transmission lines. From this model, how can I calculate the line current limits? Or from where I can get the line current limits? There is no MVA limits available in the data for this model. I tried with the MVA limits from matpower. But the regular currents (in normal operating condition) exceeds the line limits. Any help?