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

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NN il 29 Nov 2023
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.
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### Risposte (1)

David Goodmanson il 29 Nov 2023
Modificato: David Goodmanson il 1 Dic 2023
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.
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NN il 29 Nov 2023
thank you.

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