Answer Posted / kiran

phase to phase and line to line voltage are same.

Consider the voltage in R-phase or line=230V
Y-phase or line=230V
B-phase or line=230V

To calulate phase to phase voltage you have a formulae i.e.,
inputvoltage*root3(1.732)i.e.,
230v*1.732=398.36v.

This is called as phase to phase or line to line voltage.

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