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Droop conversion to system MVA base

Hello, everyone! I'm working with a system where the governors are represented with TGOV1 model. In the PSS/E documentation it says that the droop R is given in per unit on machine base. To convert the value to the system MVA base I should use the equation:

R_system = R_machine*machineBaseMVA/systemBaseMVA

Is that correct? Thanks!