11 kV phase to phase voltage, what is the value of phase to ground voltage?

11 kV phase to phase voltage, what is the value of phase to ground voltage?

In matlab simulink, at primary side of the transformer I am getting arounf 8981V as phase to ground voltage?

What is the formula?

Transformer is star configuration.

Answer 1

[David Goodmanson]

Hi N^2

I believe the result should be Vgnd = 11000/sqrt(3) = 6351 V. However, if the 11000V is RMS, and the voltage to ground is taken to be peak-to-peak, then Vgnd(pk to pk) = 11000/sqrt(3)*sqrt(2) = 8981 V. But of course that is comparing apples and oranges.

[NN]

thank you.